ENGINE SYSTEM

In the present invention with reference to a drawing objects of the present invention in the embodiment for the embodiment is for person with skill in the art to detailed hereinafter is provided to each other. However the present invention refers to several different taught herein can be embodied in the form of a in the embodiment is not limited to.

The present invention is described that is independent unambiguously account for dispensed portion when the, same or similar component through the entire specification are identical in making diffuse to the reference code.

In addition, wherein the arbitrarily for facilitating description size and thickness of each configuration exhibited drawing representing, not limited to the present invention are not necessarily shown in the drawing, by increasing a thickness of different portions and area unambiguously in order shown.

In engine systems of the present invention in the embodiment hereinafter with reference to the attached drawing detailed as follows.

Figure 1 shows a general outline configuration of engine system according to an embodiment of the present invention also shown are disclosed. The CDA device is mounted only in some of the present invention specification for facilitating described are described for example in size. However of the present invention rights range is not limited to, may be mounted in a combustion chamber is supplied to all said CDA device disapproval.

As shown in fig. 1, of the fuel system of the present invention in the embodiment according to engine combustion chamber including a plurality of generating driving force by combustion engine (10), said supercharged air is supplied to turbocharger into a combustion chamber (40), a portion of said combustion chamber in CDA (cylinder deactivation) device selectively rest, said charge into a combustion chamber feeding motor (51) operated by an electric super charger (50) (electric supercharger), and said combustion chamber connected to an exhaust manifold having a predetermined wavelength.

Said engine (10) combustion chamber with four combustion chamber is be a 4 cylinder engine. A plurality of combustion chambers includes sequentially number 1 said combustion chamber (11), number 2 combustion chamber (12), number 3 combustion chamber (13), and number 4 combustion chamber (14) disposed thereon.

Said CDA (cylinder deactivation) device is mounted to said combustion chamber during said entire combustion chamber some or all in some device to selectively idle (deactivation) are disclosed. Said CDA device (20) during operation of the exhaust valve to be supplied with fuel internal combustion chamber without rest operation of other. Said CDA device (20) is provided to the present invention is publicly known in the technology specific description dispensed to each other.

Said plurality of combustion chambers in said exhaust manifold in some group number 1 (combustion chamber group number 1: combustion chamber number 2, number 3 combustion chamber) which is connected to the exhaust manifold (31) on the other of the plurality of combustion chambers said some group (combustion chamber group number 2: combustion chamber number 1, number 4 combustion chamber) number 2 which is connected to the exhaust manifold (35) having a predetermined wavelength.

Said number 1 exhaust manifold (31) is number 1 exhaust line (33) is coupled to the, said number 2 exhaust manifold (35) is number 2 exhaust line (37) and connected thereto. Said number 1 exhaust line (33) and said number 2 exhaust line (37) main exhaust line (30) the obtained substrate. Said number 1 exhaust line (33) and said number 2 exhaust line (37) is provided at a portion said main exhaust line (30) exhaust gas is purified exhaust gas treatment device (80) is mounted thereto.

Said turbocharger (40) is for supplying supercharged air to said combustion chamber, said turbine rotated by exhaust gas in the combustion chamber (41) and, said turbine (41) to rotate is provided with a compressor compressing air (43) having a predetermined wavelength. The, said turbine (41) said number 1 the exhaust line (33) connected to said number 1 exhaust manifold (31) by exhaust gas discharged through and operate.

Said electric super charger (50) includes cooling the supercharged air into a combustion chamber for supplying to said (electric supercharger), motor (51) on the electrically operated compressor (53) having a predetermined wavelength. Said electrically operated compressor (53) is said motor (51) operated by said vibration to compress the outdoor air supplied into a combustion chamber.

On the other hand, said turbocharger (40) of said compressor (43) on said electric super charger (50) outside air is the inlet air line (60) is combined with each other. Said intake line (60) is for filtering air entering the inlet air cleaner (68) is mounted thereto. And said intake line (60) coming from an outer side for cooling air intercooler (66) is mounted thereto.

I.e., said turbocharger (40) apparatus for a (43) includes said intake line (60) is arranged in the upstream of, said electric super charger (50) includes said intake line (60) on the downstream side of disposed thereon. Said intake line (60) air to be drawn through the intake manifold (70) through said combustion chamber feed. Said intake manifold (70) is provided with a throttle valve (64) is fitted to the throttle valve (64) opening of a wavelength of said by the amount of air being supplied into the cylinder.

Said intake line (60) is said electric super charger (50) for bypassing air portion supplied to the bypass line (62) is combined with each other. Said bypass line (62) is the fitting valve body is opened. Said bypass valve to modulation of said electric super charger by (50) of a wavelength of supercharging quantity.

On the other hand, combustion chamber said number 1 group (number 2 number 3 and other combustion chambers and combustion chamber) and the compression ratio of the compression ratio of said number 2 combustion chamber group (number 1 number 4 and other combustion chambers and combustion chamber) is formed differently.

The, said number 1 compression ratio of the combustion chamber combustion chamber group (number 2 number 3 and other combustion chambers and combustion chamber) said number 2 (number 2 number 3 and other combustion chambers and combustion chamber) of the thin film preferably is less than the compression ratio.

Compression ratio (CR) is of an upper dead point position when the combustion chamber of an internal volume (V1) (V2) till a contrast ratio of piston position when the combustion chamber of an internal volume defined and, the same equation is expressed as follows.

CR=(V1 + V2)/V2

In descriptions hereinafter for convenience, called the adjustment of low pressure combustion chamber and combustion chamber group said number 1, said number 2 auxiliary combustion chamber internal combustion engine suitable for a group.

In hereinafter, according to the example of the present invention embodiment related to the operation of said engine system as defined with reference to the drawing parallel to each detailed as follows.

Figure 2 shows a timing graph according to an embodiment of the present invention operation region also are disclosed. Internal combustion engine rotation speed and the horizontal axis in Figure 2, big engine torque axis.

The filar 4 cylinder engine in Figure 2 when a spontaneous intake engine torque line and, when electric super charger engine 4 cylinder engine the dashed lines (50) through which line of boosting torque, engine turbocharger when one point chain line 4 cylinder engine (40) and voltage boosting of torque line, 4 cylinder engine engine advantages chain line when electric super charger (50) and turbocharger (40) by torque line of booth rear surface are disclosed.

The reference 2 also, relatively small rpm of the divided said CDA device (20) is operated to number 2 combustion chamber (12) and number 3 combustion chamber (13) idle a higher. Said number 2 combustion chamber (12) and said number 3 combustion chamber (13) since the results are notified, said number 2 combustion chamber (12) and said number 3 combustion chamber (13) connected to number 1 exhaust manifold (31) without the internal combustion engine exhaust gas is discharged, thereby said turbocharger (40) is not operating.

The, said engine (10) is a spontaneous intake engine 2 cylinder being operated, said electric super charger (50) said number 1 through combustion chamber (11) and number 4 combustion chamber (14) is supplied to the cabinet.

Said number 1 and combustion chamber (11) and said number 4 combustion chamber (14) in said exhaust gas turbocharger (40) does not pass through said number 2 and exhaust manifold (35) said number 2 on exhaust line (37) through said main exhaust line (30) is discharged since, back pressure (back pressure) of the exhaust gas thereby reducing the disclosed. Thereby said number 1 combustion chamber (11) and said number 4 combustion chamber (14) an increase in the compression ratio of economy is improved.

Said electric super charger (50) said number 1 through combustion chamber (11) and said number 4 combustion chamber (14) into cabinet 2 cylinder engine since in a spontaneous intake engine air can be supplied to full-premix (of Figure 2 'A' display reference) than when said electric super charger (50) can be extended by an indirectly-connected driving areas (display reference of Figure 2 'B').

I.e., of Figure 2 'A' spontaneous intake engine operation in the area of the engine cylinder 2 both sides, the, engine torque can be adjusted by the of throttle opening. In the area of the piston of Figure 2 'B' boosting engine torque through said engine is electric super with adjustable area are disclosed.

Low load region said CDA device (20) is not operating said engine 4 cylinder engine operation since 2000. The, said electric super charger (50) in said charge into a combustion chamber through air can be supplied to enlarge the area capable of low speed operation. 4 Cylinder engine operation and said engine to said turbo charger (40) but actuator of, said number 2 of the divided combustion chamber (12) and number 3 combustion chamber (13) because not much if the amount of the exhaust air in said turbocharger (40) is formed at the booth by limited number are disclosed.

A data processing speed greater than full rpm and said CDA is not operating, said engine (10) is 4 cylinder engine operation other.

The, said number 2 combustion chamber (1) and said number 3 combustion chamber (13) in said exhaust gas turbocharger (40) actuate, said turbocharger (40) supplied by said air charge into a combustion chamber. In addition, said electric super charger (50) connected to the supercharged air supplied into a combustion chamber.

I.e., a data processing speed said turbocharger (40) on said electric super charger (50) by boosting combustion chamber.

The other end of the area that is larger than said CDA interfacing rpm and is not operating, said engine (10) is 4 cylinder engine operation other.

The, said number 2 combustion chamber (12) and said number 3 combustion chamber (13) in said exhaust gas turbocharger (40) actuate, said turbocharger (40) supplied by said air charge into a combustion chamber.

I.e., the other end of said turbocharger (40) by boosting combustion chamber.

When turbocharger of the existing method, the flow rate of the exhaust gas at high speed region increased turbine (41) least one revolution of the intolerably since rotation of turbine (41) wheel overload door number is generated. In order to solve such a door number the engine using a waste gate valve (10) with respect to the bypass a portion of exhaust gas in the combustion chamber. The, engine (10) of approximately half the turbine exhaust gas in the combustion chamber (41) to bypass the base.

The engine of the present invention embodiment however example (number 2 combustion chamber (12), and number 3 combustion chamber (13)) system includes two combustion chamber only said turbocharger (40) turbine (41) is connected to said turbocharger for high speed even in a region (40) turbine (41) is fed into a bypass exhaust gas it is not necessary to described. The, of the existing method turbocharger (40) is coupled with and eliminating the waste gate valve, the upper portion of the tank of a vehicle by number can be.

On the other hand, embodiments of the present invention embodiment as described in front of throttle system, said number 1 compression ratio combustion chamber group of compression ratio combustion chamber formed small group of said number 2.

If, the adjustment of the compression ratio of said combustion chamber and said low pressure compression ratio of the auxiliary combustion chamber is set to the same, the adjustment of low pressure exhaust gas in the combustion chamber back pressure of exhaust gas in the combustion chamber greater than counter-pressure auxiliary engine state and operate.

The, as shown in fig. 3, the adjustment of said ignition timing and said ignition timing on both auxiliary on both low pressure difference is generated.

(ECU: engine control unit) is supplied to all automobile ignition timing violations of the general engine number the optical signals other. The, such discharge valve into non-linear engine, relatively low pressure the adjustment of ignition timing is set in the final ignition timing on both perceived, thereby operating a spontaneous intake engine auxiliary door number is unnecessary reduced the efficiency of the combustion chamber occurs.

Thus, in an alternative embodiment of the present invention embodiment low pressure compression ratio of said combustion chamber of said auxiliary combustion chamber the adjustment of compression ratio is small substrate. Even in this case, the adjustment of back pressure of exhaust gas in the combustion chamber said auxiliary low pressure of exhaust gas in the combustion chamber back pressure auxiliary back pressure exhaust gas in the combustion chamber is greater than the state retention are the same.

However back pressure according to ignition timing as shown in also shown 4, low pressure on both the adjustment of ignition timing (reference curve 1 times) on both on auxiliary ignition timing (2 times reference curve) determined differently depending back pressure.

Thus, the adjustment of ignition timing and the ignition timing of the existing method compared to engine auxiliary combustion chamber combustion chamber pressure difference will significantly reduced or almost identical to determined and, also when operating on both auxiliary engine low load operation is made a spontaneous intake engine can prevent lowering the efficiency.

Or more of the present invention preferred embodiment through is described but, on of the drawings and detailed description of the invention is not limited to claim the present invention refers to the preface is elastically deformed and in addition of the present invention variously in the range and the range of possible embodiment of course have disclosed.