摘要:
A control system controls a power transmission system located between a motive power source and drive wheels. The power transmission system includes a fluid coupling and an engagement device. The control system includes an electronic control unit configured to: obtain information concerning vibration of the power transmission system; determine whether the vibration of the power transmission system is in a resonance region of the power transmission system; control the engagement device so that the engagement device slips, when the electronic control unit determines that the power transmission system is in the resonance region; and control the motive power source when the electronic control unit determines that the power transmission system is in the resonance region, so that a rotational speed of the motive power source increases as compared with a case where the power transmission system is not in the resonance region.
摘要:
A method for controlling a clutch of an automatic transmission for improvement of fuel efficiency may include determining whether external driving conditions of a vehicle meets coasting conditions, determining a clutch slip control time and an amount of clutch slip torque according to internal driving conditions of the vehicle, performing slip control on a clutch that works at each step of the automatic transmission using the determined clutch slip control time and torque, wherein an engine brake torque transmitted to a final output shaft of the automatic transmission may be reduced.
摘要:
A hybrid vehicle includes: an internal combustion engine having an in-cylinder injection valve directly injecting fuel into a combustion chamber and a port injection valve injecting fuel into an intake port; and a motor generator, and causes a torque equal to a user required torque to act on a drive shaft by controlling output torques of the engine and motor generator. When a misfire is not detected, the hybrid vehicle operates the engine at an engine operation point at which an engine power satisfies an engine required power in a first engine operation line. When a misfire is detected, the hybrid vehicle operates the engine at an engine operation point at which the engine power satisfies the engine required power in a second engine operation line, causes one of the injection valves to inject an entire amount of fuel, and determines which one is abnormal.
摘要:
A system for controlling an engine in a vehicle according to the principles of the present disclosure includes a fuel control module and a valve control module. The fuel control module controls fuel delivery to a cylinder of the engine. The valve control module closes an exhaust valve of the cylinder when fuel delivery to the cylinder is disabled during operation of the vehicle and exhaust gas has been exhausted from the cylinder after fuel delivery to the cylinder is disabled.
摘要:
A vehicle includes a body frame, an engine, a transmission, an injector, an engine controller, and a transmission controller. The body frame supports three or more wheels. The engine is attached to the body frame. The transmission is attached to the body frame and changes a torque from the engine and outputs a resulting torque. The injector is disposed on or above the engine, and supplies fuel to the engine. The transmission controller is configured or programmed to control a gear position of the transmission. The engine controller and the transmission controller are spaced apart from each other.
摘要:
An engine is mounted in a vehicle configured to perform EV travelling. The engine includes a port injection valve that injects fuel to an intake port, a low pressure delivery pipe that stores the fuel for injection from the port injection valve, and a feed pump that compresses and thus supplies the fuel to the low pressure delivery pipe. An ECU, in the EV travelling, starts the fuel pump when a vehicle request power representing a driving power of the vehicle requested by the user exceeds a pump threshold value, and the ECU, in the EV travelling, generates a request to start the engine when the vehicle request power exceeds an engine threshold value larger than the pump threshold value.
摘要:
The vehicle described herein employs an electronic control unit (“ECU”) and/or accessory control module configured to improve actual fuel, economy. The ECU and/or the accessory control module monitors vehicle operating conditions and reduces load from an accessory when the vehicle achieves predetermined operating conditions. The ECU and/or the accessory control module is also configured to engage a fuel cut and a torque converter lock up condition. The lock up condition causes the wheels to drive the motor to avoid engine stall. At a predetermined low level, the ECU and/or the accessory control module can re-engage the accessory and fuel supply and disengage the lock up condition.
摘要:
A control system for a vehicle performs torque down control to reduce torque of an engine by cutting off supply of fuel to at least one of the cylinders of the engine during an inertia phase of a power-on upshift. During the torque down control, the throttle opening is reduced to smaller than a throttle opening including an amount by which the throttle opening is increased so as to compensate for a part of the amount of torque reduction, by means of one or more cylinders to which the fuel continues to be supplied.
摘要:
A method for controlling a clutch of an automatic transmission for improvement of fuel efficiency may include determining whether external driving conditions of a vehicle meets coasting conditions, determining a clutch slip control time and an amount of clutch slip torque according to internal driving conditions of the vehicle, performing slip control on a clutch that works at each step of the automatic transmission using the determined clutch slip control time and torque, wherein an engine brake torque transmitted to a final output shaft of the automatic transmission may be reduced.
摘要:
A method of resuming multi-port injection using an intake stroke of an engine includes performing a first refueling with immediate start of ignition injection at the time when an injection abortion angle does not pass through an intake stroke, when injection is determined to be resumed after coasting by a controller. The method can minimize an engine RPM drop caused by the early generation of torque. The method improves fuel efficiency while being advantageous to calibration of the engine by setting the engine RPM to be low at the time of fuel cut-in.