ENGINE MISFIRE DETECTION DEVICE FOR HYBRID ELECTRIC VEHICLE

An engine misfire detection device is mounted on a hybrid electric vehicle that includes an internal combustion engine and a generator. The internal combustion engine has a plurality of cylinders and a crankshaft and is dedicated to power generation. The generator is connected to the crankshaft via a torsional damper. The engine misfire detection device includes a generator rotation angle sensor and a processor. The generator rotation angle sensor detects the rotation angle of the generator rotating shaft. The processor is configured to execute a misfire detection process. The misfire detection process includes a first misfire detection process of determining that the internal combustion engine has misfired when an amplitude correlation value that correlates with the magnitude of amplitude of rotation speed of the generator rotating shaft and is detected by the generator rotation angle sensor is greater than a determination threshold value. 1. An engine misfire detection device mounted on a hybrid electric vehicle that includes: a generator rotation angle sensor configured to detect a rotation angle of the generator rotating shaft; and', 'a processor configured to execute a misfire detection process of detecting a misfire of the internal combustion engine, wherein', 'the misfire detection process includes a first misfire detection process of determining that the internal combustion engine has misfired when an amplitude correlation value that correlates with a magnitude of amplitude of rotation speed of the generator rotating shaft and is detected by the generator rotation angle sensor is greater than a determination threshold value., 'an internal combustion engine having a plurality of cylinders and a crankshaft and dedicated to power generation; and a generator having a generator rotating shaft connected to the crankshaft via a torsional damper, the engine misfire detection device comprising2. The engine misfire detection device according to claim 1 , further ...

METHOD FOR MANUFACTURING ENGINE

A method for manufacturing an engine includes: preparing, as a preparing step, a cylinder head having a surface on which a ceiling surface of a combustion chamber is formed; forming, as a film formation step, a thermal insulation film on the ceiling surface; measuring, as a measurement step, a volume of the thermal insulation film; and selecting, as a selection step, from a plurality of ranks set in correspondence with compression heights of pistons, the rank of the piston to be combined with the ceiling surface, the selected rank corresponding to an amount of difference of the measured volume of the thermal insulation film from a design value of the volume of the thermal insulation film. 1. A method for manufacturing an engine , the method comprising:preparing, as a preparing step, a cylinder head having a surface on which a ceiling surface of a combustion chamber is formed;forming, as a film formation step, a thermal insulation film on the ceiling surface;measuring, as a measurement step, a volume of the thermal insulation film; andselecting, as a selection step, from a plurality of ranks set in correspondence with compression heights of pistons, the rank of the piston to be combined with the ceiling surface, the selected rank corresponding to an amount of difference of the measured volume of the thermal insulation film from a design value of the volume of the thermal insulation film.2. The method according to claim 1 , further comprising:recording, on the surface of the cylinder head, information related to the rank selected in the selection step.3. The method according to claim 1 , wherein in the selection step claim 1 , the selected rank of the piston is the rank having the compression height that minimizes an amount of difference of a capacity of the combustion chamber at a time of the piston being in a top dead center position from a design value of the capacity of the combustion chamber claim 1 , the amount of difference of the capacity of the combustion ...

MANUFACTURING METHOD FOR ENGINE

A manufacturing method for an engine includes: preparing, as a preparing step, a cylinder head having a surface on which a ceiling surface of a combustion chamber is formed; forming, as a film formation step, a thermal insulation film on the ceiling surface; measuring, as a measurement step, a volume of the thermal insulation film; and selecting, as a selection step, a rank for an engine valve to be used in combination with the ceiling surface so as to correspond to an amount of difference of a measured volume of the thermal insulation film from a designed value of a volume of the thermal insulation film, the rank being selected from a plurality of ranks set in correspondence with thicknesses of umbrella portions of engine valves. 1. A manufacturing method for an engine , comprising:preparing, as a preparing step, a cylinder head having a surface on which a ceiling surface of a combustion chamber is formed;forming, as a film formation step, a thermal insulation film on the ceiling surface;measuring, as a measurement step, a volume of the thermal insulation film; andselecting, as a selection step, a rank for an engine valve to be used in combination with the ceiling surface so as to correspond to an amount of difference of a measured volume of the thermal insulation film from a designed value of a volume of the thermal insulation film, the rank being selected from a plurality of ranks set in correspondence with thicknesses of umbrella portions of engine valves.2. The manufacturing method according to claim 1 , further comprising:recording information on the rank selected in the selection step on the surface of the cylinder head.3. The manufacturing method according to claim 1 , whereinthe rank for the engine valve to be selected in the selection step is a rank having a thickness of an umbrella portion, the thickness minimizing an amount of difference of a capacity of the combustion chamber from a designed value of the capacity of the combustion chamber in a case ...

METHOD FOR MANUFACTURING PISTON FOR INTERNAL COMBUSTION ENGINE

A method for manufacturing a piston for an internal combustion engine, a base material of the piston being an aluminum alloy, a cavity being formed in a top surface of the piston, includes a depositing step of depositing a porous anodic oxide coating on a portion of a surface of the base material, the portion corresponding to a wall surface of the cavity, a reinforcing step of reinforcing the anodic oxide coating deposited by the depositing step, a polishing step of forming a smoothed surface of the anodic oxide coating by polishing the anodic oxide coating reinforced by the reinforcing step, and a sealing step of applying a sealant on the smoothed surface of the anodic oxide coating formed by the polishing step. 1. A method for manufacturing a piston for an internal combustion engine , a base material of the piston being an aluminum alloy , a cavity being formed in a top surface of the piston , comprising:a depositing step of depositing a porous anodic oxide coating on a portion of a surface of the base material, the portion corresponding to a wall surface of the cavity;a reinforcing step of reinforcing the anodic oxide coating that is deposited by the depositing step;a polishing step of forming a smoothed surface of the anodic oxide coating by polishing the anodic oxide coating that is reinforced by the reinforcing step; anda sealing step of applying a sealant on the smoothed surface of the anodic oxide coating that is formed by the polishing step.2. The method for manufacturing the piston for the internal combustion engine according to claim 1 , wherein claim 1 , in the reinforcing step claim 1 , the anodic oxide coating that is deposited by the depositing step is reinforced by applying the sealant until the sealant accumulates on the surface of the anodic oxide coating that is deposited by the depositing step.3. The method for manufacturing the piston for the internal combustion engine according to claim 2 , wherein claim 2 , in the polishing step claim 2 , the ...

Internal combustion engine

A heat shield film is formed on a bottom surface of a cylinder head and a heat shield film is formed on an inner peripheral surface of a small diameter hole portion. The film is a thermal spraying film made from the same film material. Since the film is thicker than the film, the film has higher thermal capacity than the film and thus heat retaining effect of the film is higher than that of the film. Therefore, combustion gas generated in a combustion chamber is suppressed to lose its momentum around the portion. Even if the combustion gas goes off around the portion, excessive temperature decrease of the combustion gas in the portion is suppressed.

ROLLING VIBRATION REDUCTION DEVICE FOR INTERNAL COMBUSTION ENGINE

A rolling vibration reduction device for an internal combustion engine includes: a main inertial system configured to rotate with a crankshaft of the internal combustion engine; a driving force transmission mechanism configured to transmit a rotational driving force of the crankshaft, a direction of the rotational driving force being reversed by the driving force transmission mechanism; and a sub-inertial system configured to rotate by the rotational driving force transmitted from the driving force transmission mechanism and to reduce rolling vibration of the internal combustion engine associated with rotation of the crankshaft by rotating in an opposite direction to the crankshaft. A torsional resonance frequency in the rolling vibration reduction device is set to a value higher than an explosion primary frequency at a maximum engine speed in a preset operating region of the internal combustion engine. 1. A rolling vibration reduction device for an internal combustion engine , the rolling vibration reduction device comprising:a main inertial system configured to rotate with a crankshaft of the internal combustion engine;a driving force transmission mechanism configured to transmit a rotational driving force of the crankshaft, a direction of the rotational driving force being reversed by the driving force transmission mechanism; anda sub-inertial system configured to rotate by the rotational driving force transmitted from the driving force transmission mechanism and to reduce rolling vibration of the internal combustion engine associated with rotation of the crankshaft by rotating in an opposite direction to the crankshaft,wherein a torsional resonance frequency in the rolling vibration reduction device is set to a value higher than an explosion primary frequency at a maximum engine speed in a preset operating region of the internal combustion engine.2. The rolling vibration reduction device according to claim 1 , wherein at least one of a moment of inertia of the ...

Powertrain system

A powertrain system includes an internal combustion engine, a motor generator and a control device. The motor generator includes a rotating shaft connected to a crankshaft of the internal combustion engine via a torsional damper. The powertrain system is configured such that the crankshaft and the above-described rotating shaft are not connected to a drive shaft of a vehicle at least at the time of engine start. The control device is configured to execute a cranking torque amplification control that controls the motor generator such that the MG torque output from the motor generator for cranking the internal combustion engine fluctuates in a resonant period of the torsional damper while making a fluctuation center of the MG torque higher than zero.

MANUFACTURING METHOD FOR CYLINDER HEAD

A manufacturing method for a cylinder head is described. A masking member is attached to cylinder head material, which followed by a film formation step. The masking member comprises a mask portion to mask the matching surface with the cylinder block, and mask portions to mask each of the openings of the intake ports, the exhaust ports, and the CPS hole. Mask portions are linked directly to other mask portions without any steps. 1. A manufacturing method for a cylinder head comprising:a preparation step for preparing a cylinder head material having in the same plane a matching surface with a cylinder block and a wall constituent surface of an engine combustion chamber, wherein the wall constituent surface has port holes that correspond to an intake port and an exhaust port, and a slant hole for an engine-related part that is different from the port holes and slants from a vertical direction of the matching surface with the cylinder block;an attaching step for attaching the cylinder head material to a masking member that is configured to mask a non-film formation area of the wall constituent surface and the matching surface with the cylinder block;a film formation step for, after the attachment of the masking member, injecting film material particles in a direction opposed to the matching surface with the cylinder block to form a heat shield film; anda detaching step for detaching the masking member from the cylinder head material after the formation of the heat shield film,wherein the masking member comprises:a matching surface mask portion that is configured to mask the matching surface with the cylinder block;a port hole mask portions that are configured to link to the matching surface mask portion directly and to mask each of openings of the port holes; anda slant hole mask portion that is configured to link to any one of the port hole mask portions directly and to mask an opening of the slant hole.2. The manufacturing method for a cylinder head according to ...

MANUFACTURING METHOD FOR CYLINDER HEAD

The masking member comprises a matching surface mask portion to mask the matching surface with the cylinder block, port hole mask portions to mask openings of the intake ports and the exhaust ports, and a between openings mask portion to mask a region which is sandwiched between the openings of two adjacent port holes. The matching surface mask portion is linked directly to the port hole mask portions without any steps, and the between openings mask portion is linked directly to both of the port hole mask portions without a step. 1. A manufacturing method for a cylinder head comprising the steps of:preparing a cylinder head material having in the same plane a matching surface with a cylinder block and a wall surface of an engine combustion chamber, wherein the wall surface has at least three port holes that include an intake port and an exhaust port;attaching the cylinder head material to a masking member that is configured to mask a non-film formation region of the wall surface and the matching surface with the cylinder block;after the attachment of the masking member, injecting film material particles onto the matching surface with the cylinder block to form a heat shield film; anddetaching the masking member from the cylinder head material after the formation of the heat shield film,wherein the masking member comprises:a matching surface mask portion that is configured to mask the matching surface with the cylinder block;port hole mask portions that are configured to link to the matching surface mask portion directly and to mask openings of the port holes; anda between openings mask portion that is configured to mask at least one narrow region which is a sandwiched region between openings of two adjacent port holes and also is the shortest distance region between opening edges of the adjacent port holes, and is configured to link directly to both of the port hole mask portions that mask the openings of the adjacent port holes, respectively.2. The manufacturing ...

MANUFACTURING METHOD FOR ENGINE

A cylinder head material of an engine is casted (Step S). Next, the cylinder head material is machined (Step S). Next, a heat shielding film is formed on a ceiling surface of the cylinder head material (Step S). Next, the film thickness of the heat shielding film is measured (Step S). Next, a rank of a piston to be combined with the ceiling surface is selected (Step S). The rank of the piston selected in Step S is a rank according to depth of a cavity. Next, the rank of the piston selected in Step S is stamped on the cylinder head (Step S). 1. A manufacturing method of an engine comprising the steps of:preparing a cylinder head having a surface on which a ceiling surface of a combustion chamber;forming a heat shielding film on the ceiling surface;measuring a volume of the heat shielding film; andselecting out of multiple ranks of pistons one rank to be combined with the ceiling surface, wherein each of the pistons includes a cavity, the multiple ranks are preset in accordance with volume of the cavity,wherein the selecting step is a step to select the one rank of which volume of the cavity corresponds to a divergence amount of the measured volume of the heat shielding film from a design volume.2. The manufacturing method of an engine according to claim 1 ,wherein the manufacturing method further comprising the step of stamping information of the selected one rank on the surface of the cylinder head.3. The manufacturing method of an engine according to claim 1 ,wherein the selecting step is a step to select the one rank of which volume of the cavity minimizes the divergence amount.4. The manufacturing method of an engine according to claim 1 ,wherein the forming step is a step to form a heat shielding film having a porous structure on the ceiling surface.5. The manufacturing method of an engine according to claim 1 ,wherein the cavity is formed in each top land of the pistons as an annular groove surrounding a conical protrusion,the multiple ranks are preset in ...

INTERNAL COMBUSTION ENGINE

The present invention relates to an internal combustion engine. An object of the invention is to allow an effect produced by are anodic oxide film to be exerted while suppressing a decrease in the combustion rate. A piston includes a cavity portion and a tapered portion that is formed so as to surround the cavity portion on an outer side thereof. The diameter of the tapered portion decreases progressively in the downward direction from the top face side of the piston. A squish portion is formed on an outer side of the tapered portion . An anodic oxide film is formed on a surface (tapered face) of the tapered portion and a surface (squish face) of the squish portion . The anodic oxide film is not formed on the surface (cavity face) of the cavity portion 1. An internal combustion engine comprising a piston in which an anodic oxide film is formed on at least one part of a top face that faces a cylinder head , and an injection valve that is capable of injecting a fuel towards the top face , wherein:the top face includes: a cavity face which comprises a cavity for causing fuel that is injected to ignite, a squish face which comprises an outer circumference of the top face at an outer side of the cavity face, and a tapered face which is formed between the squish face and the cavity face;a rough surface region in which the anodic oxide film is formed is provided over an entire area of the squish face; andthe rough surface region and a smooth surface region in which a surface roughness is less than on the squish face that is provided by formation or non-formation of the anodic oxide film is provided in a region that includes the cavity face and the tapered face, wherein the smooth surface region is provided at least in a region in which a flame caused by fuel from the injection valve contacts at an initial formation stage, and the rough surface region is provided in a region in which the smooth surface region is not provided.2. The internal combustion engine according to ...

METHOD FOR FORMING HEAT INSULATING FILM, AND STRUCTURE OF HEAT INSULATING FILM

A method for forming a heat insulating film includes: a step of subjecting an aluminum alloy constituting a surface of a base material to an anodic oxidation treatment to form an anodic oxidation coating film having pores formed in the surface thereat a step of coating on the surface of the anodic oxidation coating film a sealing material that includes a silicon-based polymer solution and particles of a heat insulating material that are dispersed in the silicon-based polymer solution and are particles having an average particle diameter that is larger than an average pore diameter of the pores; and a step of drying and baking the sealing material to form a sealing coating film. 1. A method for forming a heat insulating film , comprising:a step of subjecting an aluminum alloy constituting a surface of a base material to an anodic oxidation treatment to form an anodic oxidation coating film having a surface in which pores are formed;a step of coating on the surface of the anodic oxidation coating film a sealing material that includes a silicon-based polymer solution and particles of a heat insulating material that are dispersed in the silicon-based polymer solution and are particles having a primary particle diameter that is larger than an outer diameter of the pores; anda step of drying and baking the sealing material to form a sealing coating film.2. The method for forming a heat insulating film according to claim 1 , wherein the particles are particles that have a hollow structure.3. The method for forming a heat insulating film according to claim 1 , wherein the primary particle diameter of the particles is greater than 30 nm.4. A structure of a heat insulating film that is formed by a formation method according to claim 1 , comprising:an aluminum alloy constituting a surface of a base material;an anodic oxidation coating film that is formed on a surface of the aluminum alloy, and that has a surface in which pores are formed; anda sealing coating film that is ...

Engine misfire detection device for hybrid electric vehicle

An engine misfire detection device is mounted on a hybrid electric vehicle (1) that includes an internal combustion engine (12) dedicated to power generation, and a generator (14). The generator (14) is connected to a crankshaft (12b) via a torsional damper (26). The engine misfire detection device includes a generator rotation angle sensor (36) and a processor (22a). The generator rotation angle sensor (36) detects the rotation angle of a generator rotating shaft (14a). The processor (22a) is configured to execute a misfire detection process. The misfire detection process includes a first misfire detection process (A) of determining that the internal combustion engine (12) has misfired when an amplitude correlation value that correlates with the magnitude of amplitude of rotation speed of the generator rotating shaft (14a) and is detected by the generator rotation angle sensor (36) is greater than a determination threshold value (TH1).

Manufacturing method for engine

A cylinder head material of an engine is casted (Step S1). Next, the cylinder head material is machined (Step S2). Next, a heat shielding film is formed on a ceiling surface of the cylinder head material (Step S3). Next, the film thickness of the heat shielding film is measured (Step S4). Next, a rank of a piston to be combined with the ceiling surface is selected (Step S5). The rank of the piston selected in Step S5 is a rank according to depth of a cavity. Next, the rank of the piston selected in Step S5 is stamped on the cylinder head (Step S6).

Internal combustion engine

A heat shield film is formed on a bottom surface of a cylinder head and a heat shield film is formed on an inner peripheral surface of a small diameter hole portion. The film is a thermal spraying film made from the same film material. Since the film is thicker than the film, the film has higher thermal capacity than the film and thus heat retaining effect of the film is higher than that of the film. Therefore, combustion gas generated in a combustion chamber is suppressed to lose its momentum around the portion. Even if the combustion gas goes off around the portion, excessive temperature decrease of the combustion gas in the portion is suppressed.

Internal combustion engine

The present invention relates to an internal combustion engine. An object of the invention is to allow an effect produced by an anodic oxide film to be exerted while suppressing a decrease in the combustion rate. A piston 10 includes a cavity portion 20 and a tapered portion 26 that is formed so as to surround the cavity portion 20 on an outer side thereof. The diameter of the tapered portion 26 decreases progressively in the downward direction from the top face side of the piston. A squish portion 28 is formed on an outer side of the tapered portion 26. An anodic oxide film 30 is formed on a surface (tapered face) of the tapered portion 26 and a surface (squish face) of the squish portion 28. The anodic oxide film 30 is not formed on the surface (cavity face) of the cavity portion 20.

Powertrain system

A powertrain system includes an internal combustion engine, a motor generator and a control device. The motor generator includes a rotating shaft connected to a crankshaft of the internal combustion engine via a torsional damper. The powertrain system is configured such that the crankshaft and the above-described rotating shaft are not connected to a drive shaft of a vehicle at least at the time of engine start. The control device is configured to execute a cranking torque amplification control that controls the motor generator such that the MG torque output from the motor generator for cranking the internal combustion engine fluctuates in a resonant period of the torsional damper while making a fluctuation center of the MG torque higher than zero.

Internal combustion engine

The present invention relates to an internal combustion engine. An object of the invention is to allow an effect produced by an anodic oxide film to be exerted while suppressing a decrease in the combustion rate. A piston 10 includes a cavity portion 20 and a tapered portion 26 that is formed so as to surround the cavity portion 20 on an outer side thereof. The diameter of the tapered portion 26 decreases progressively in the downward direction from the top face side of the piston. A squish portion 28 is formed on an outer side of the tapered portion 26. An anodic oxide film 30 is formed on a surface (tapered face) of the tapered portion 26 and a surface (squish face) of the squish portion 28. The anodic oxide film 30 is not formed on the surface (cavity face) of the cavity portion 20.

断熱膜の形成方法

【課題】陽極酸化皮膜の細孔の外径よりも大きい一次粒子径を有する断熱性素材の粒子を含む封孔材を用いて当該細孔の開口部を封じる封孔皮膜を形成する断熱膜の形成方法において、封孔皮膜に開気孔が形成されることを抑制する。 【解決手段】母材の表面を構成するアルミニウム合金を陽極酸化処理して、細孔が開口する表面を有する陽極酸化皮膜を形成するステップＳ１と、ケイ素系ポリマー溶液から構成される第１の封孔材を当該陽極酸化皮膜の表面に塗工するステップＳ２と、ケイ素系ポリマー溶液と、当該ケイ素系ポリマー溶液に分散された断熱性素材の粒子であって、当該細孔の平均外径よりも大きい平均粒子径を有する粒子と、を含む第２の封孔材を、当該陽極酸化皮膜の表面に塗工するステップＳ３と、第１および第２の封孔材を乾燥・焼成して封孔皮膜を形成するステップＳ４と、を備える。 【選択図】図１

シリーズハイブリッド式駆動装置

【課題】車両の高さ方向の寸法を小さくして搭載性を向上させる。 【解決手段】発電機３における回転中心軸線Ｃ3はエンジン２の回転軸線Ｃ2に平行になっており、電動機４と減速機構９とデファレンシャルギヤ１０とのそれぞれの回転中心軸線Ｃ4，Ｃ9，Ｃ10は回転軸線Ｃ2と平行になっており、さらにフライホイール６と入力駆動部材７と発電機３と電動機４と減速機構９とデファレンシャルギヤ１０とは、車両の高さ方向において、それぞれの外径のうち最大外径Ｄ6の範囲内に配置され、発電機３と電動機４とに共用の端子台１２が、発電機３と電動機４との間に配置されている。 【選択図】図２

Rolling vibration reduction device for internal combustion engine

A rolling vibration reduction device for an internal combustion engine includes: a main inertial system configured to rotate with a crankshaft of the internal combustion engine; a driving force transmission mechanism configured to transmit a rotational driving force of the crankshaft, a direction of the rotational driving force being reversed by the driving force transmission mechanism; and a sub-inertial system configured to rotate by the rotational driving force transmitted from the driving force transmission mechanism and to reduce rolling vibration of the internal combustion engine associated with rotation of the crankshaft by rotating in an opposite direction to the crankshaft. A torsional resonance frequency in the rolling vibration reduction device is set to a value higher than an explosion primary frequency at a maximum engine speed in a preset operating region of the internal combustion engine.

パワートレーンシステム

【課題】内燃機関のクランク軸がトーショナルダンパを介してモータジェネレータの出力軸と連結されたパワートレーンシステムにおいて、ＭＧトルク自体を高めることなくクランキング時にクランク軸に付与されるトルクを効果的に高められるようにする。【解決手段】パワートレーンシステムは、内燃機関と、モータジェネレータと、制御装置とを備える。モータジェネレータは、トーショナルダンパを介して内燃機関のクランク軸と連結された回転軸を有する。パワートレーンシステムは、少なくともエンジン始動時にクランク軸及び上記回転軸が車両の駆動軸と連結されないように構成されている。制御装置は、内燃機関のクランキングのためにモータジェネレータから出力されるＭＧトルクが当該ＭＧトルクの変動中心をゼロより高くしつつトーショナルダンパの共振周期で変動するようにモータジェネレータを制御するクランキングトルク増幅制御を実行する。【選択図】図１

溶射被膜形成方法

【課題】溶射条件に依らずワークのエッジ部分の形状を制御可能な溶射被膜形成方法を提供する。 【解決手段】第２ステップにおいては、マスキング部材１２の表面上の任意の点を中心として描かれる仮想円の円周上を当該任意の点が移動するようにマスキング部材１２が動かされる。図３においては、マスキング部材１２の４つの頂点が、夫々の頂点を中心として描かれる仮想円の円周上を移動する様子が示されている。また、この回転動作は、溶射開始からの時間の経過に伴い当該仮想円の半径ｒ（回転半径ｒ）が縮小されて最終的にはゼロとなるように行われる。 【選択図】図３

バランサ機構

【課題】１次ピッチ振動、２次ピッチ振動、ヨー振動およびロール振動を抑制することができるバランサ機構を提供すること。【解決手段】バランサ機構は、直列３気筒エンジン用のバランサ機構であって、クランク軸の回転方向に対して等速で逆回転する等速逆転バランサと、クランク軸の回転方向に対して倍速で正回転する倍速正転バランサと、クランク軸の回転方向に対して倍速で逆回転する倍速逆転バランサと、を備え、「（クランク軸周り慣性）－（等速逆転バランサ慣性）＋２×（倍速正転バランサ慣性）－２×（倍速逆転バランサ慣性）＝０」の関係を満たす。【選択図】図１

内燃機関のローリング振動低減装置

【課題】内燃機関のローリング振動を低減させることが可能な内燃機関のローリング振動低減装置を提供すること。 【解決手段】内燃機関のクランクシャフトと一体に回転する主慣性系と、クランクシャフトの回転駆動力を回転の向きを反転させて伝達する駆動力伝達機構と、駆動力伝達機構から伝達された回転駆動力によって回転する副慣性系と、を備え、クランクシャフトの回転に伴う内燃機関のローリング振動を、副慣性系がクランクシャフトの回転方向とは逆向きに回転することによって低減するように構成された内燃機関のローリング振動低減装置であって、ローリング振動低減装置における捩り共振周波数は、内燃機関の予め設定された運転領域における最高回転数での爆発１次周波数よりも高く設定されている。 【選択図】図２

Herstellungsverfahren für einen Zylinderkopf

Ein Maskierungselement 30 hat einen Maskierungsabschnitt 30a zur Maskierung einer zu einem Zylinderblock 10b passenden Fläche, Maskierungsabschnitte 30b, 30c, 30d und 30e zur Maskierung von Öffnungen von Ansaugkanälen und Auslasskanälen, sowie einen Maskierungsabschnitt 30f zur Maskierung einer CPS-Öffnung. Der Maskierungsabschnitt 30a ist ohne Stufen direkt mit den Maskierungsabschnitten 30b, 30c, 30d und 30e verbunden, und der Maskierungsabschnitt 30c ist ohne Stufe direkt mit dem Maskierungsabschnitt 30f verbunden. Wenn zwei Maskierungsabschnitte ohne andere Maskierungsabschnitte miteinander verbunden sind, bedeutet dies, dass der eine Maskierungsabschnitt „direkt” mit dem anderen Maskierungsabschnitt „verbunden ist”.

Brennkammer einer maschine mit interner verbrennung

Eine Hitzeschutzschicht PA wird auf einer oberen Fläche 12a und einer Bodenfläche 20a gebildet. Die Hitzeschutzschicht PA ist insbesondere eine poröse Aluminiumoxidschicht. Genauer gesagt ist die Hitzeschutzschicht PA eine anodische Oxidationsschicht, die durch Anodenoxidation des Kolbens 12 gebildet ist, der aus einer Aluminiumlegierung als einem Basismetall hergestellt ist. Eine Hitzeschutzschicht SRA wird in einzelnen kreisförmigen Bereichen auf einer Seitenfläche 20b gebildet. Die Hitzeschutzschicht SRA umfasst die Hitzeschutzschicht PA als eine untere Schicht und eine Siliziumdioxidschicht, die als eine obere Schicht die Oberfläche der Hitzeschutzschicht PA abdeckt und die Öffnungen der Poren blockiert. Die Siliziumdioxidschicht ist eine Abdichtschicht, die durch Aufbringen eines anorganischen oder organischen Lösungsmittels, das Siliziumdioxid bzw. Quarz enthält, wie Polysilazan, auf die Oberfläche des porösen Aluminiumoxids und Verbrennen des das Lösungsmittels gebildet wird.

内燃機関のローリング振動低減装置

【課題】主慣性系と副慣性系との間に設けられている歯車機構における歯面分離を確実に回避もしくは抑制できる装置を提供する。【解決手段】内燃機関の回転数を求め（ステップＳ１）、内燃機関の回転数に基づいて主慣性系のトルクを求め（ステップＳ４）、副慣性系のトルクであって、かつ発電電動機が内燃機関に対して負荷となる、予め定めた定常回転状態であるときの内燃機関の正回転を止める方向の負荷トルクを求め、主慣性系のトルクが、定常回転状態であるときの副慣性系による負荷トルクよりも正回転の方向で見て小さくなることを判定し（ステップＳ６）、判定が成立した場合には、副慣性系による内燃機関の正回転を止める方向の負荷トルクが主慣性系の正回転の方向で見たトルク以下となるように発電電動機のトルクを制御する（ステップＳ９，Ｓ１３）。【選択図】図６

Herstellungsverfahren für einen Motor

Ein Herstellungsverfahren für einen Motor umfasst: Vorbereiten, als ein Vorbereitungsschritt, eines Zylinderkopfs (10) mit einer Oberfläche, auf der eine Deckenoberfläche (14) eines Verbrennungsraums gebildet ist; Bilden, als ein Schichtbildungsschritt, einer Wärmeisolationsfilm (26, 26a, 26b) auf der Deckenoberfläche (14); Messen, als ein Messschritt, eines Volumen der Wärmeisolationsfilm (26, 26a, 26b); und Auswählen, als ein Auswahlschritt, einer Kategorie (R1, R2) eines in Verbindung mit der Deckenoberfläche (14) zu verwendenden Motorventils (22, 22a, 22b) so, dass sie einem Betrag der Differenz eines gemessenen Volumens der Wärmeisolationsfilm (26, 26a, 26b) von einem Sollwert eines Volumens der Wärmeisolationsfilm (26, 26a, 26b) entspricht, wobei die Kategorie von mehreren Kategorien (R1, R2) ausgewählt wird, die entsprechend Dicken (TVa, TVb) von Tellerabschnitten (24, 24a, 24b) von Motorventilen (22, 22a, 22b) eingestellt werden.

冷却装置

【課題】キャッチタンクに供給するオイルの量を制御すること。【解決手段】エンジンと、発電用モータと、エンジンの動力を発電用モータに伝達するギヤ対と、ギヤ対によって掻き上げられたオイルを貯留するキャッチタンクと、エンジンを制御する制御装置と、を備えるシリーズハイブリッド車に搭載され、キャッチタンクに貯留されたオイルを用いて発電用モータを冷却する冷却装置であって、ギヤ対は、エンジン側の入力ギヤが回転停止時にオイルに浸かる位置に配置され、入力ギヤと一体回転する入力軸は、モータの回転軸よりも低い位置に配置され、制御装置は、キャッチタンクに貯留されたオイルの量が少ない場合、エンジンの出力が一定となるエンジン回転数とエンジントルクとを規定する等パワー線上において、エンジン回転数が上がるようにエンジンの動作点を変更する。【選択図】図２

Driving force control device

A driving force control device in which, based on the rotational speed of the motor mounted on the vehicle, it is determined whether resonance occurs in the vehicle with respect to the road, and when it is determined that resonance occurs in the vehicle, the torque of the motor is limited. Only the fluctuation component of the rotation speed is extracted from the rotation speed of the motor with a band-pass filter. When limiting the torque of the motor, the torque reduction is started at the timing of 270 degrees in the phase of the waveform which regards the extracted fluctuation component as the COS waveform.

Engine misfire detection device in a hybrid electric vehicle

Internal combustion engine

The present invention relates to an internal combustion engine. An object of the invention is to allow an effect produced by an anodic oxide film to be exerted while suppressing a decrease in the combustion rate. A piston 10 includes a cavity portion 20 and a tapered portion 26 that is formed so as to surround the cavity portion 20 on an outer side thereof. The diameter of the tapered portion 26 decreases progressively in the downward direction from the top face side of the piston. A squish portion 28 is formed on an outer side of the tapered portion 26 . An anodic oxide film 30 is formed on a surface (tapered face) of the tapered portion 26 and a surface (squish face) of the squish portion 28 . The anodic oxide film 30 is not formed on the surface (cavity face) of the cavity portion 20.