摘要:
A vehicle controller includes an F/C control section, a battery voltage detection section, an AT control section, an alternator, and an ECU. The ECU determines the difference between a target deceleration for varying deceleration smoothly and a deceleration attained at each gear stage as a target deceleration which is generated by the alternator. The ECU compensates for the difference between target deceleration and the deceleration by the target deceleration to smooth variations in the deceleration of the whole vehicle, thereby improving drivability.
摘要:
A control system includes an engine speed control module, a fuel control module, and an air control module. The engine speed control module controls an actual speed of an engine based a desired power to be generated by combustion in the engine, wherein the desired power is a product of a desired speed of the engine and a desired torque output of the engine. When operating in a fuel lead mode, the fuel control module controls fuel flow in the engine by adjusting a desired fuel mass for each activated cylinder of the engine based on the desired power. The air control module controls air flow in the engine based on an actual air/fuel ratio of the engine resulting from the desired fuel mass.
摘要:
A method for the operation of a drivetrain comprising an automatic transmission, a motor and at least five shift elements in which two shift elements are engaged and three shift elements are disengaged. When carrying out an upshift or downshift, a first shift element is either disengaged or engaged, and a second shift element is engaged or disengaged. While the first upshift or downshift is being carried out, a second shift element is prepared for disengaging or engaging and a third shift element is prepared for engaging or disengaging. Actuation of the second shift element occurs by virtue of a minimum selection of a first alternative or a maximum selection a second alternative. While the first upshift or downshift is being carried out and while the second upshift or downshift is being carried out, at least one fourth shift element is kept engaged or nearly engaged.
摘要:
A shift control apparatus for an automatic transmission having an automatic shift mode for performing a shift operation by determining a gear position or gear ratio to be set according to a vehicle running condition and a manual shift mode for performing a shift operation instructed by a manual operation by an operator. The shift control apparatus includes a region determining unit for determining whether the present running condition is in a first region where downshift is performed at the present gear position or gear ratio in the automatic shift mode or in a second region higher in vehicle speed than the first region, and an upshift allowing unit for allowing upshift instructed by the manual operation by the operator in the manual shift mode when the region determining unit has determined that the present running condition is in the second region.
摘要:
A method is provided for operating a power system. The method includes receiving an operator request for a propulsion direction change. The method also includes selecting a power boost map in response to the propulsion direction change request. The power boost map increases the power rating of a power source of the power system. In addition, the method includes directing power into the power source. The method further includes regulating the power system and accelerating a power source speed according to the power boost map when the power is no longer being directed into the power source.
摘要:
A power output apparatus that outputs power to a driveshaft, the power output apparatus includes an internal combustion engine, a change-speed transmission mechanism, a connection disconnection structure, a power shaft rotation speed measurement unit, an input shaft rotation speed measurement unit, a start connection control module, and a start connection control module controlling at least one of the internal combustion engine and the change-speed transmission mechanism to make the power shaft rotation speed of the internal combustion engine approach to the input shaft rotation speed of the change-speed transmission mechanism, and controlling the connection disconnection structure to connect the power shaft of the internal combustion engine with the input shaft of the change-speed transmission mechanism at the set fluid supply start timing.
摘要:
A clutch control apparatus for a vehicle provided with a hydraulic clutch in the middle of a power transmission path between an engine and a drive wheel. Before the clutch of the vehicle is brought into an engagement state, intermittent hydraulic pressure Y is applied to the clutch while maintaining the clutch in a disengagement state, and thereafter a predetermined hydraulic pressure is applied to the clutch to bring it into the engagement state. A solenoid valve is provided to control hydraulic pressure supplied to the clutch. Before the clutch is brought into the engagement state, a pulsed drive current D is supplied to the solenoid valve. The clutch control apparatus so configured suppresses a motion delay at the time of engaging the clutch, thereby allowing a quick and smooth start and shifting of the clutch.
摘要:
In response to a start-engagement operation command, the control procedure of the invention starts increasing a hydraulic pressure applied to a clutch when a reference time Tc0 decreases to or below a required hydraulic pressure change time Tc1. Here the reference time Tc0 is calculated from a previously learnt time correction value Tc2 and a rotation speed difference between a rotation speed Nin of an input shaft and a rotation speed Ne of an engine (steps S150 to S190). The control procedure learns and updates the time correction value Tc2 according to a variation in acceleration of a vehicle possibly arising in the course of engagement of the clutch (steps S210 to S300). Such learning of the time correction value Tc2 effectively corrects the engagement timing of the clutch, which may be varied by ageing or another cause, to an adequate level. The control procedure of the invention effectively reduces the potential shocks due to a variation in acceleration of the vehicle possibly arising in the course of engagement of the clutch.
摘要:
An automatic shifting-operation control system having an engine control unit that controls the operation of an engine by a signal of an intake air amount detected by intake air amount detecting unit which detects an intake air amount of an engine, and which includes one or both of a vehicle speed limiting function for reducing a fuel injection amount to suppress a driving speed of a vehicle to a speed equal to or less than a predetermined limited value, and a cruise control function for setting the driving speed of the vehicle to an optional constant speed capable of allowing an automatic cruise of the vehicle, and a transmission control unit configured to control a transmission in accordance with a driving state of the vehicle. The transmission can be automatically controlled in the like manner as that of the normal driving state even when the vehicle is driving with a reduced fuel injection amount by the vehicle speed limiting function or even during the automatic cruise due to the cruise control function of the engine control unit.
摘要:
The invention relates to a method for controlling and/or regulating a drive train in a vehicle with an engine and a gearbox, especially an automatic gearbox, whereby depending on a warning signal and a stopping request of the driver an engine stalling aid is launched. The invention also relates to a drive train for a vehicle with an engine and a gearbox, especially an automatic gearbox, especially for carrying out said method.