METHOD TO CONTROL A ROAD VEHICLE FOR THE EXECUTION OF A STANDING START

A method to control a road vehicle for the execution of a standing start; the control method comprises the steps of: engaging a gear in a transmission while a corresponding clutch is open; progressively closing the clutch causing the clutch to transmit a torque that causes the rotation of at least a pair of drive wheels; determining a target slip of the drive wheels; cyclically determining a real slip of the of the drive wheels; and continuously modulating the torque transmitted by the clutch during the closing of the clutch based of a difference between the target slip of the drive wheels and the real slip of the of the drive wheels. 11. A method to control a road vehicle () for the execution of a first standing start; the control method comprises the steps of:{'b': 7', '1', '16', '1, 'engaging a gear in a transmission () of the road vehicle () while a corresponding clutch (A) of the road vehicle () is open;'}{'b': 16', '16', '3', '1, 'progressively closing the clutch (A) causing the clutch (A) to transmit a torque that causes the rotation of at least a pair of drive wheels () of the road vehicle ();'}{'sub': 'T', 'b': '3', 'determining a target slip (S) of the drive wheels ();'}{'sub': 'R', 'b': '3', 'cyclically determining a real slip of the (S) of the drive wheels (); and'}{'b': 16', '16', '3', '3, 'sub': T', 'R, 'continuously modulating the torque transmitted by the clutch (A) during the closing of the clutch (A) based of a difference between the target slip (S) of the drive wheels () and the real slip of the (S) of the drive wheels ();'}{'b': 16', '16', '3, 'sub': 'T', 'wherein the torque transmitted by the clutch (A) during the closing of the clutch (A) is modulated so as to pursue the target slip (S) of the drive wheels ().'}2161633. The control method according to claim 1 , wherein the torque transmitted by the clutch (A) during the closing of the clutch (A) is modulated by means of a feedback control in which a control error (ϵ) is the difference between ...

METHOD TO CONTROL A ROAD VEHICLE WITH A MICROSLIP OF THE CLUTCH

A method to control a road vehicle provided with a clutch, which connects an internal combustion engine to drive wheels and is arranged upstream of a servo-assisted transmission; the control method comprises the steps of: checking whether the tyres of the drive wheels are close to a grip limit; and opening the clutch so that the clutch transmits a torque to the drive wheels with a slip of the clutch that is constant and other than zero when the tyres of the drive wheels are close to the grip limit. 1116437) A method to control a road vehicle () provided with a clutch () , which connects an internal combustion engine () to drive wheels () and is arranged upstream of a servo-assisted transmission (); the control method comprises the steps of:{'b': '3', 'checking whether the tyres of the drive wheels () are close to a grip limit; and'}{'b': 16', '16', '3', '16', '3, 'opening the clutch () so that the clutch () transmits a torque to the drive wheels () with a slip of the clutch () that is constant and other than zero when the tyres of the drive wheels () are close to the grip limit;'}{'b': 3', '7', '4, 'sub': 'E', 'wherein the tyres of the drive wheels () are considered close to the grip limit if: in the servo-assisted transmission (), a gear is engaged, which belongs to a predetermined set of gears; and a torque (T) generated by the internal combustion engine () exceeds a torque threshold value.'}226162716) The control method according to claim 1 , wherein claim 1 , due to the slip claim 1 , a driving disc () of the clutch () has a rotation speed (ω) which is greater than a rotation speed (ω) of a driven disc () of the clutch ().32627) The control method according to claim 2 , wherein a difference between the rotation speed (ω) of the driving disc () and the rotation speed (ω) of the driven disc () ranges from 70 to 180 revolutions/minute.426274) The control method according to claim 2 , wherein a difference between the rotation speed (ω) of the driving disc () and the ...

METHOD TO CONTROL A ROAD VEHICLE FOR THE EXECUTION OF A MULTIPLE DOWNSHIFT IN A DRIVETRAIN PROVIDED WITH A SERVO-ASSISTED TRANSMISSION

A method to control a road vehicle for the execution of a multiple downshift in a drivetrain provided with a servo-assisted transmission; the control method comprises the steps of: detecting a condition of slowing down of the road vehicle and, simultaneously, detecting a driver's request for a multiple downshift; carrying out, in succession, a plurality of downshifts while the road vehicle is slowing down and in an autonomous manner regardless of further interventions of the driver; determining a duration of a shift time interval; and carrying out each downshift following a first downshift when said shift time interval has exactly elapsed since the previous downshift. 117) A method to control a road vehicle () for the execution of a multiple downshift in a drivetrain provided with a servo-assisted transmission (); the control method comprises the steps of:{'b': '1', "detecting a condition of slowing down of the road vehicle () and, simultaneously, detecting a driver's request for a multiple downshift;"}{'b': '1', 'carrying out, in succession, a plurality of downshifts while the road vehicle () is slowing down and in an autonomous manner regardless of further interventions of the driver;'}determining a duration of a single shift time interval (Δt) common to all the plurality of downshifts; andcarrying out each downshift following a first downshift when said shift time interval (Δt) has elapsed exactly since the previous downshift.2) The control method according to claim 1 , wherein the first downshift is carried out in a same instant (T) in which the driver's request for a multiple downshift is detected.346) The control method according to claim 1 , wherein a downshift is delayed if it would cause an excessive increase in a rotation speed (ω) of an internal combustion engine () connected to the drivetrain ().44) The control method according to claim 1 , wherein the duration of the shift time interval (Δt) is determined based on a rotation speed (ω) of an internal ...

METHOD TO CONTROL A ROAD VEHICLE PROVIDED WITH A DUAL-CLUTCH, SERVO-ASSISTED TRANSMISSION AND STANDING STILL WITH THE INTERNAL COMBUSTION ENGINE TURNED ON

A method to control a road vehicle provided with a dual-clutch, servo-assisted transmission and standing still with the internal combustion engine turned on; the control method comprises, when the road vehicle is standing still with the internal combustion engine turned on, the steps of: engaging a forward gear associated with a first clutch; engaging a reverse gear associated with a second clutch, which is different from and independent of the first clutch; closing the first clutch so as to cause the first clutch to transmit a first torque; and closing the second clutch so as to cause the second clutch to transmit a second torque, which is equal to the first torque multiplied by the quotient between a gear ratio of the reverse gear and a gear ratio of the forward gear.

METHOD TO AUTOMATICALLY CONTROL A DRIVETRAIN PROVIDED WITH A SERVO-ASSISTED TRANSMISSION

A method to automatically control a drivetrain provided with a servo-assisted transmission; the method comprises the steps of: measuring a rotation speed of the internal combustion engine; carrying out a shift to a lower gear in an autonomous manner and independently of an intervention of a driver, when the rotation speed of the internal combustion engine reaches a lower threshold; carrying out a shift to a higher gear in an autonomous manner and independently of an intervention of the driver, when the rotation speed of the internal combustion engine reaches an upper threshold; detecting a release of an accelerator pedal in a first instant; waiting, starting from the first instant, a time interval until a second instant, which is subsequent to the first instant; and increasing a value of the lower threshold starting from the instant until a following pressing of the accelerator pedal.

METHOD TO CONTROL A ROAD VEHICLE PROVIDED WITH AN INTERNAL COMBUSTION ENGINE DURING A GEAR SHIFT

A method to control a road vehicle provided with an internal combustion engine having a plurality of cylinders and with a servo-assisted transmission. The control method comprises the steps of: establishing a minimum spark advance which should not be exceeded in order to avoid the risk of knocking or spontaneous ignitions of the mixture; temporarily reducing, during a gear shift in the servo-assisted transmission, a torque generated by the internal combustion engine by setting an actual spark advance, which is smaller than the minimum spark advance, for one single thermodynamic cycle of each cylinder; and cancelling the injection of fuel into each cylinder in the thermodynamic cycle immediately following the thermodynamic cycle carried out with an actual spark advance smaller than the minimum spark advance.

METHOD TO CONTROL THE EXECUTION OF A SHIFT TO A LOWER GEAR WHILE AN ACCELERATOR PEDAL IS RELEASED IN A DRIVETRAIN PROVIDED WITH A DUAL-CLUTCH, SERVO-ASSISTED TRANSMISSION

A method to control the execution of a shift to a lower gear while an accelerator pedal is released in a drivetrain provided with a dual-clutch, servo-assisted transmission; the control method comprises the following steps: opening, in a first instant, an outgoing clutch; closing, in the first instant, an incoming clutch; completing the opening of the outgoing clutch and the closing of the incoming clutch in a second instant; synchronizing, between the second instant and a third instant, a rotation speed of the internal combustion engine with a rotation speed of the incoming clutch; and controlling the incoming clutch between the second instant and the third instant so as to have the incoming clutch temporarily transmit a greater torque than the torque that the clutch is going to transmit immediately after the shift to a lower gear and than the torque that the outgoing clutch transmitted immediately before the shift to a lower gear.

METHOD TO CONTROL THE EXECUTION OF A SHIFT TO A LOWER GEAR WITH A RELEASED ACCELERATOR PEDAL IN A DRIVETRAIN PROVIDED WITH A DUAL-CLUTCH, SERVO-ASSISTED TRANSMISSION

A method to control the execution of a shift to a lower gear with a released accelerator pedal in a drivetrain provided with a dual-clutch, servo-assisted transmission; the following steps ate provided: opening, in a first instant, an outgoing clutch; closing, in the first instant, an incoming clutch; completing the opening of the outgoing clutch by means of a first linear ramp in a second instant; synchronizing, between the second instant and a third instant, a rotation speed of the internal combustion engine with a rotation speed of the incoming clutch; closing of the incoming clutch by means of a second linear ramp starting from a fourth instant, which is prior to or coincides with the second instant; completing the closing of the incoming clutch in a fifth instant, which coincides with or is subsequent to the second instant; and activating the internal combustion engine so as to generate a torque between the fourth instant and the third instant. 12267) A method to control the execution of a shift to a lower gear with a released accelerator pedal () in a drivetrain () provided with a dual-clutch , servo-assisted transmission () , so as to shift from a current gear (A) to a following gear (B) , which is shorter than the current gear (A);{'b': 6', '7', '15', '17', '3', '16', '16', '5', '4', '15, 'the drivetrain () comprises a dual-clutch, servo-assisted transmission () having two primary shafts (); at least one secondary shaft () connected to drive wheels (); and two clutches (A, B), each interposed between a drive shaft () of an internal combustion engine () and a corresponding primary shaft ();'}the control method comprises the steps of:{'sub': '1', 'b': '16', 'opening, in a first instant (t), an outgoing clutch (A) associated with the current gear (A);'}{'sub': '1', 'b': '16', 'closing, in the first instant (t), an incoming clutch (B) associated with the following gear (B);'}{'b': '16', 'completing the opening of the outgoing clutch (A) by means of a first ...

METHOD TO CONTROL A ROAD VEHICLE PROVIDED WITH A SERVO-ASSISTED TRANSMISSION DURING A SLOWING-DOWN PHASE

A method to control a road vehicle provided with a servo-assisted transmission during a slowing down phase; the control method comprises, when the servo-assisted transmission is in an automatic operating mode, the steps of: calculating, assuming that a pressing of the brake pedal remains constant, an opening time interval needed to allow the road vehicle to reach an opening speed at which a clutch of the servo-assisted transmission is definitively opened; calculating a number of downshifts that can be carried out in the opening time interval based on a time needed to carry out a downshift; scheduling the downshifts to be carried out in order to get from the current gear engaged in the servo-assisted transmission to an opening gear with which the clutch of the servo-assisted transmission is definitively opened, so as to carry out no more than the number of downshifts that can be carried out in the opening time interval; and carrying out the scheduled downshifts.

METHOD TO CONTROL THE EXECUTION OF A SHIFT TO A HIGHER GEAR WITH A RELEASED ACCELERATOR PEDAL IN A DRIVETRAIN PROVIDED WITH A DUAL-CLUTCH, SERVO-ASSISTED TRANSMISSION

A method to control the execution of a shift to a higher gear with a released accelerator pedal in a drivetrain provided with a dual-clutch, servo-assisted transmission, comprising the steps of: opening, in a first instant, an outgoing clutch; closing, in the first instant, an incoming clutch; synchronizing, between a second instant and a third instant, a rotation speed of the internal combustion engine with a rotation speed of the incoming clutch, namely with the rotation speed imposed by the gear ratio of the following gear; completely opening, in the third instant, the outgoing clutch; completely closing, in the third instant, the incoming clutch; keeping the torque transmitted by the outgoing clutch constant between the second instant and a fourth instant; and keeping the torque transmitted by the incoming clutch constant between the second instant and the fourth instant.

SYSTEM FOR LIMITING A REVOLUTION SPEED OF AN INTERNAL COMBUSTION ENGINE

A method for limiting a revolution speed of an internal combustion engine (E) of a sports car, the method comprising a first step (Step ) of acquiring a nominal speed value of said internal combustion engine, a second step (Step ) of measuring a revolution speed of said internal combustion engine, when (CHK) a measured revolution speed of said internal combustion engine has reached (yes) an activation speed approximately equal to said nominal speed, the method comprising a third step (Step ) of setting a predetermined initial torque value (a) to be delivered by said internal combustion engine and simultaneously a fourth step (Step ) of carrying out a feedback control of a torque delivery of said internal combustion engine. 2. The method according to claim 1 , wherein said sports car comprises a transmission (TR) and a predetermined number of gear ratios claim 1 , and wherein said predetermined initial torque comprises a number of values equal to said number of gear ratios and wherein the values of said predetermined initial torque have a 1:1 relationship with the gear ratios.35. The method according to claim 1 , further comprising a fifth step (Step ) of acquiring a current gear ratio claim 1 , wherein said fifth step is carried out immediately prior to said third step and wherein said third step further comprises a step of selecting (b) a value of said predetermined initial torque in response to said acquisition of said current gear ratio.4. The method according to claim 1 , wherein said predetermined initial torque is calculated or determined empirically so as to cause said internal combustion engine to reach and/or maintain said nominal speed in a stable manner.5. The method according to claim 1 , comprising a step of triggering a predetermined number of oscillations in said internal combustion engine speed having peaks coincident with said nominal speed claim 1 , with a predetermined frequency and magnitude.6. The method according to claim 5 , wherein said ...

Method to control a road vehicle during a slip of the drive wheels

A method to control a road vehicle during a slip of the drive wheels and having the steps of: detecting a slip of at least one drive wheel; and controlling, only during a slip of at least one drive wheel, a driving unit of the road vehicle with a signalling law so as to obtain a cyclic operating irregularity, which generates an abnormal vibration and/or an abnormal noise.

METHOD TO CONTROL A ROAD VEHICLE DURING A SLIP OF THE DRIVE WHEELS

A method to control a road vehicle during a slip of the drive wheels, which are caused to rotate by an internal combustion engine provided with a plurality of cylinders arranged in two banks, and with a plurality of fuel injectors each injecting fuel into a corresponding cylinder. The control method comprises the steps of: detecting a slip of at least one drive wheel; and controlling the internal combustion engine, only during a slip of at least one drive wheel, with a signalling law, which causes the internal combustion engine to work in an abnormal manner so as to generate an abnormal vibration and/or an abnormal noise, which can be perceived by the driver. The internal combustion engine has two twin control units, each of which is associated with a corresponding bank, controls all and the sole injectors of its own bank and actuates the signalling law completely independently of and autonomously from the other control unit. 113411101611) A method to control a road vehicle () during a slip of the drive wheels () , which are caused to rotate by an internal combustion engine () provided with a plurality of cylinders () arranged in two banks () , and with a plurality of fuel injectors () each injecting fuel into a corresponding cylinder (); the control method comprises the steps of:{'b': '3', 'detecting a slip of at least one drive wheel (); and'}{'b': 4', '3', '4, 'controlling the internal combustion engine (), only during a slip of at least one drive wheel (), with a signalling law, which causes the internal combustion engine () to work in an abnormal manner so as to generate an abnormal vibration and/or an abnormal noise, which can be perceived by the driver;'}{'b': 4', '11', '11, 'wherein the signalling law entails cyclically actuating an impulsive deviating event (R), which determines an impulsive gap in the torque generated by the internal combustion engine () and consists of at least an incomplete or failed injection of fuel into a single cylinder (), which ...

Method to control a road vehicle for the execution of a standing start

A method to control a road vehicle (1) for the execution of a standing start; the control method comprises the steps of: engaging a gear in a transmission (7) while a corresponding clutch (16A) is open; progressively closing the clutch (16A) causing the clutch (16A) to transmit a torque that causes the rotation of at least a pair of drive wheels (3); determining a target slip (S_T) of the drive wheels (3); cyclically determining a real slip of the (S_R) of the drive wheels (3); and continuously modulating the torque transmitted by the clutch (16A) during the closing of the clutch (16A) based of a difference between the target slip (S_T) of the drive wheels (3) and the real slip of the (S_R) of the drive wheels (3).

Method to control a road vehicle for the execution of a multiple downshift in a drivetrain provided with a servo-assisted transmission

A method to control a road vehicle for the execution of a multiple downshift in a drivetrain provided with a servo-assisted transmission; the control method comprises the steps of: detecting a condition of slowing down of the road vehicle and, simultaneously, detecting a driver's request for a multiple downshift; carrying out, in succession, a plurality of downshifts while the road vehicle is slowing down and in an autonomous manner regardless of further interventions of the driver; determining a duration of a shift time interval; and carrying out each downshift following a first downshift when said shift time interval has exactly elapsed since the previous downshift.

Method to control a road vehicle for the execution of a multiple downshift in a drivetrain provided with a servo-assisted transmission

Method to control a road vehicle with a microslip of the clutch

A method to control a road vehicle provided with a clutch, which connects an internal combustion engine to drive wheels and is arranged upstream of a servo-assisted transmission; the control method comprises the steps of: checking whether the tyres of the drive wheels are close to a grip limit; and opening the clutch so that the clutch transmits a torque to the drive wheels with a slip of the clutch that is constant and other than zero when the tyres of the drive wheels are close to the grip limit.

Method to control a road vehicle provided with an internal combustion engine during a gear shift

A method to control a road vehicle provided with an internal combustion engine having a plurality of cylinders and with a servo-assisted transmission. The control method comprises the steps of: establishing a minimum spark advance which should not be exceeded in order to avoid the risk of knocking or spontaneous ignitions of the mixture; temporarily reducing, during a gear shift in the servo-assisted transmission, a torque generated by the internal combustion engine by setting an actual spark advance, which is smaller than the minimum spark advance, for one single thermodynamic cycle of each cylinder; and cancelling the injection of fuel into each cylinder in the thermodynamic cycle immediately following the thermodynamic cycle carried out with an actual spark advance smaller than the minimum spark advance.

デュアルクラッチサーボアシストトランスミッションを備えるドライブトレインでアクセルタペダルが解放された状態でのより高速のギアへのシフトの実行を制御する方法

【課題】デュアルクラッチサーボアシストトランスミッションを備えるドライブトレインでアクセルタペダルが解放された状態でのより高速のギアへのシフトの実行を制御する方法の提供。【解決手段】第１の時点（ｔ１）に出力クラッチを開放、入力クラッチを閉鎖するステップと、第２の時点（ｔ２）と第３の時点（ｔ４）との間で、内燃エンジンの回転速度（ωＥ）を入力クラッチの回転速度（ωＢ）、すなわち後続ギアのギア比によって定められる回転速度（ωＢ）と同期させるステップと、第３の時点（ｔ４）に出力クラッチの開放を完了するステップと、第３の時点（ｔ４）に入力クラッチの閉鎖を完了するステップと、第２の時点（ｔ２）と第４の時点（ｔ３）との間で出力クラッチにより伝達されるトルク（ＴＡ）を一定に保つステップと、第２の時点（ｔ２）と第４の時点（ｔ３）との間で入力クラッチにより伝達されるトルク（ＴＢ）を一定に保つステップとを含む。【選択図】図３

Method to control a road vehicle provided with a servo-assisted transmission during a slowing-down phase

A method to control a road vehicle (1) provided with a servo-assisted transmission (7) during a slowing down phase; the control method comprises, when the servo-assisted transmission (7) is in an automatic operating mode, the steps of: calculating, assuming that a pressing of the brake pedal (23) remains constant, an opening time interval needed to allow the road vehicle (1) to reach an opening speed at which a clutch (16) of the servo-assisted transmission (7) is definitively opened; calculating a number of downshifts that can be carried out in the opening time interval based on a time needed to carry out a downshift; scheduling the downshifts to be carried out in order to get from the current gear engaged in the servo-assisted transmission (7) to an opening gear with which the clutch (16) of the servo-assisted transmission (7) is definitively opened, so as to carry out no more than the number of downshifts that can be carried out in the opening time interval; and carrying out the scheduled downshifts.

Method to control the execution of a downshift with a released accelerator pedal in a drivetrain provided with a dual-clutch, servo-assisted transmission

A method to control the execution of a shift to a lower gear with a released accelerator pedal (22) in a drivetrain (6) provided with a dual-clutch, servo-assisted transmission (7); the following steps ate provided: opening, in a first instant (t₁), an outgoing clutch (16A); closing, in the first instant (t₁), an incoming clutch (16B); completing the opening of the outgoing clutch (16A) by means of a first linear ramp in a second instant; synchronizing, between the second instant and a third instant (t₄), a rotation speed (ω_E) of the internal combustion engine (4) with a rotation speed (ω_B) of the incoming clutch (16B); closing of the incoming clutch (16B) by means of a second linear ramp starting from a fourth instant (t₂), which is prior to or coincides with the second instant; completing the closing of the incoming clutch (16B) in a fifth instant (t₃), which coincides with or is subsequent to the second instant; and activating the internal combustion engine (4) so as to generate a torque (T_E) between the fourth instant (t₂) and the third instant (t₄).

デュアルクラッチサーボアシストトランスミッションを備えるドライブトレインでアクセルタペダルが解放された状態でのより低速のギアへのシフトの実行を制御する方法

【課題】デュアルクラッチサーボアシストトランスミッションを備えるドライブトレインでアクセルタペダルが解放された状態で低速ギアへのシフト時の減速度の不快な変化を抑制する。【解決手段】第１の時点ｔ１に、出力クラッチを開放するステップと、第１の時点に、入力クラッチを閉鎖するステップと、第２の時点ｔ２に第１の直線ランプにより出力クラッチの開放を完了するステップと、第２の時点と第４の時点ｔ４との間で、内燃エンジンの回転速度ωＥを入力クラッチの回転速度ωＢと同期させるステップと、第２の時点の前又は第２の時点と一致する第３の時点ｔ２を起点として第２の直線ランプにより入力クラッチを閉鎖するステップと、第２の時点と一致する又は第２の時点の後の第５の時点ｔ３に入力クラッチの閉鎖を完了するステップと、第３の時点ｔ２と第４の時点ｔ４との間でトルクＴＥを生成するように内燃エンジンを起動するステップとが設けられる。【選択図】図３

Metodo di controllo per l'esecuzione di un cambio marcia discendente con pedale dell'acceleratore rilasciato in una trasmissione provvista di un cambio servoassistito a doppia frizione

内燃エンジンを備える道路車両を変速中に制御する方法

【課題】複数のシリンダを有する内燃エンジン、及びサーボアシストトランスミッションを備える道路車両を制御する方法を提供する。【解決手段】この制御方法は、混合気のノッキング又は自然発火の危険性を回避するために、超えてはならない最小点火進角を規定するステップと、サーボアシストトランスミッションの変速中に、各シリンダの単一の熱力学的サイクルに対して、最小点火進角よりも小さい実際の点火進角を設定することによって、内燃エンジンによって生成されるトルクを一時的に低減するステップと、最小点火進角よりも小さい実際の点火進角で実行された熱力学サイクルの直後の熱力学サイクルにおいて、各シリンダへの燃料噴射を中止するステップと、を含む。【選択図】図３

Method to automatically control a drivetrain provided with a servo-assisted transmission

A method to automatically control a drivetrain (6) provided with a servo-assisted transmission (7); the method comprises the steps of: measuring a rotation speed (ω_E) of the internal combustion engine (4); carrying out a shift to a lower gear in an autonomous manner and independently of an intervention of a driver, when the rotation speed (ω_E) of the internal combustion engine (4) reaches a lower threshold (TH_DOWN); carrying out a shift to a higher gear in an autonomous manner and independently of an intervention of the driver, when the rotation speed (ω_E) of the internal combustion engine (4) reaches an upper threshold (TH_UP); detecting a release of an accelerator pedal (22) in a first instant (t₁); waiting, starting from the first instant (t₁), a time interval (TO) until a second instant (t₂), which is subsequent to the first instant (t₁); and increasing a value of the lower threshold (TH_DOWN) starting from the instant (t₂) until a following pressing of the accelerator pedal (22).

デュアルクラッチサーボアシストトランスミッションを備えるドライブトレインでアクセルペダルが解放される間により低速のギアへのシフトの実行を制御する方法

【課題】アクセルペダルが解放される間により低速のギアへのシフトの実行を制御する。【解決手段】第１の時点（ｔ１）に、出力クラッチを開放するステップと、第１の時点に、入力クラッチを閉鎖するステップと、第２の時点（ｔ２）に出力クラッチの開放を完了するとともに、入力クラッチの閉鎖を完了するステップと、第２の時点と第３の時点（ｔ３）との間に、内燃エンジンの回転速度（ωＥ）を入力クラッチの回転速度（ωＢ）と同期させるステップと、第２の時点と第３の時点との間で、クラッチがシフト直後により低速のギアに伝達しようとしているトルク（ＴＢ）よりも大きく且つシフト直前に出力クラッチがより低速のギアに伝達したトルク（ＴＡ）よりも大きいトルク（ＴＢ）を入力クラッチに一時的に伝達させるステップとを含む。【選択図】図４

減速段階中にサーボアシストトランスミッションを備える路上走行車両を制御する方法

【課題】サーボアシストトランスミッションが自動動作モードにあるときに、ブレーキ操作に起因するダウンシフトでの乗り心地低下を改善する制御方法を提供する。【解決手段】ブレーキペダルの踏み込みが一定のままであると仮定して、サーボアシストトランスミッション７のクラッチ１６Ａ，Ｂが確実に開放される開放速度に路上走行車両が到達できるようにするのに必要な開放時間間隔を計算するステップと、ダウンシフトを実行するのに必要な時間に基づいて、開放時間間隔で実行され得るダウンシフトの数を計算するステップと、サーボアシストトランスミッションに噛み合わされる現在のギアからサーボアシストトランスミッションのクラッチを確実に開放させる開放ギアへと至るように実行されるべきダウンシフトをスケジュールするステップとにより、ダウンシフトを実行する。【選択図】図２

デュアルクラッチサーボアシストトランスミッションを備えて内燃エンジンがオンの状態で静止している路上走行車両を制御する方法

【課題】デュアルクラッチサーボアシストトランスミッションを備えて内燃エンジンがオンの状態で静止している路上走行車両を制御する方法を提供する。【解決手段】制御方法は、内燃エンジン４をオンの状態にして静止しているときに、第１のクラッチ１６Ａと関連付けられる前進ギアを噛み合わせるステップと、第１のクラッチとは異なるとともに第１のクラッチから独立している第２のクラッチ１６Ｂと関連付けられる後進ギアＲを噛み合わせるステップと、第１のクラッチを閉じて第１のトルク（ＴＡ）を第１のクラッチに伝達させるステップと、第２のクラッチを閉じて、後進ギアのギア比と前進ギアのギア比との間の商を第１のトルク（ＴＡ）に乗じたものに等しい第２のトルク（ＴＢ）を第２のクラッチに伝達させるステップとを含む。【選択図】図３

Method to control a road vehicle provided with a dual-clutch, servo-assisted transmission and standing still with the internal combustion engine turned on

A method to control a road vehicle (1) provided with a dual-clutch, servo-assisted transmission (7) and standing still with the internal combustion engine (4) turned on; the control method comprises, when the road vehicle (1) is standing still with the internal combustion engine (4) turned on, the steps of: engaging a forward gear associated with a first clutch (16A); engaging a reverse gear (R) associated with a second clutch (16B), which is different from and independent of the first clutch (16A); closing the first clutch (16A) so as to cause the first clutch (16A) to transmit a first torque (T A ); and closing the second clutch (16B) so as to cause the second clutch (16B) to transmit a second torque (T B ), which is equal to the first torque (T A ) multiplied by the quotient between a gear ratio of the reverse gear (R) and a gear ratio of the forward gear.

Method to control a road vehicle provided with a dual-clutch, servo-assisted transmission and standing still with the internal combustion engine turned on

A method to control a road vehicle provided with a dual-clutch, servo-assisted transmission and standing still with the internal combustion engine turned on; the control method generally includes, when the road vehicle is standing still with the internal combustion engine turned on, the steps of: engaging a forward gear associated with a first clutch; engaging a reverse gear associated with a second clutch, which is different from and independent of the first clutch; closing the first clutch so as to cause the first clutch to transmit a first torque; and closing the second clutch so as to cause the second clutch to transmit a second torque, which is equal to the first torque multiplied by the quotient between a gear ratio of the reverse gear and a gear ratio of the forward gear.

Method to control the execution of a downshift while an accelerator pedal is released in a drivetrain provided with a dual-clutch, servo-assisted transmission

A method to control the execution of a shift to a lower gear while an accelerator pedal (22) is released in a drivetrain (6) provided with a dual-clutch, servo-assisted transmission (7); the control method comprises the following steps: opening, in a first instant (ti), an outgoing clutch (16A); closing, in the first instant (ti), an incoming clutch (16B); completing the opening of the outgoing clutch (16A) and the closing of the incoming clutch (16A) in a second instant (t₂); synchronizing, between the second instant (t₂) and a third instant (t₃), a rotation speed (ω_E) of the internal combustion engine (4) with a rotation speed (ω_B) of the incoming clutch (16B); and controlling the incoming clutch (16B) between the second instant (t₂) and the third instant (t₃) so as to have the incoming clutch (16B) temporarily transmit a greater torque (T_B) than the torque (T_B) that the clutch (16B) is going to transmit immediately after the shift to a lower gear and than the torque (T_A) that the outgoing clutch (16A) transmitted immediately before the shift to a lower gear.

道路車両を駆動輪のスリップの際に制御するための方法

【課題】道路車両を駆動輪のスリップ時に制御するための方法を提供する。【解決手段】方法は、少なくとも１つの駆動輪（３）のスリップを検出するステップと、少なくとも１つの駆動輪（３）のスリップ時にのみ、異常振動および／または異常騒音を生じさせる周期的な動作不規則性を得るための通知法則によって道路車両（１）の駆動ユニットを制御するステップとを有する。【選択図】図１

Method to control a road vehicle provided with an internal combustion engine during a gear shift

A method to control a road vehicle (1) provided with an internal combustion engine (4) having a plurality of cylinders (18) and with a servo-assisted transmission (7). The control method comprises the steps of: establishing a minimum spark advance which should not be exceeded in order to avoid the risk of knocking or spontaneous ignitions of the mixture; temporarily reducing, during a gear shift in the servo-assisted transmission (7), a torque generated by the internal combustion engine (4) by setting an actual spark advance, which is smaller than the minimum spark advance, for one single thermodynamic cycle of each cylinder (18); and cancelling the injection of fuel into each cylinder (18) in the thermodynamic cycle immediately following the thermodynamic cycle carried out with an actual spark advance smaller than the minimum spark advance.

道路車両を駆動輪のスリップの際に制御するための方法

【課題】道路車両を、２つのバンクに配置された複数のシリンダと、それぞれが対応するシリンダへと燃料を噴射する複数の燃料インジェクタとを備えている内燃機関によって回転させられる駆動輪のスリップ時に、制御するための方法を提供する。【解決手段】制御方法は、少なくとも１つの駆動輪３のスリップを検出するステップと、少なくとも１つの駆動輪のスリップ時にのみ、内燃機関４を異常な様相で動作させて運転者にとって知覚可能な異常振動および／または異常騒音を生じさせる通知法則によって、内燃機関を制御するステップとを含む。内燃機関は、２つの双子の制御ユニット１８を有し、各々の制御ユニットは、対応するバンクに関連付けられ、自身のバンクのすべての個別のインジェクタを制御し、他方の制御ユニットから完全に独立かつ自律的に通知法則を作動させる。【選択図】図１