摘要:
The present disclosure relates to a control circuit for a vehicle transmission cooling system having a controller configured to control an air compressor to selectively pressurize a transmission clutch housing and provide air to an alternative vehicle subsystem (or subsystems).
摘要:
A depression force of an accelerator pedal 2 is increased than a base depression force by a predetermined amount when an accelerator opening degree becomes a predetermined accelerator opening degree threshold value at which an engine speed necessary at a start of a vehicle can be obtained by a depression of the accelerator pedal 2 in a state where a clutch 102 is disengaged at the start of the vehicle. With this, at the start of the vehicle, a driver becomes easy to hold the accelerator pedal 2 in a constant accelerator opening degree at which the engine speed necessary at the start can be obtained. It is possible to smoothly engage the clutch 102, and then to attain the smooth start of the vehicle.
摘要:
A method for controlling a transmission input clutch during a vehicle launch includes determining a desired clutch torque, a desired engine torque, a desired vehicle acceleration and a desired engine speed, determining a change in clutch torque and a change in engine torque with reference to the first and second errors and current operating conditions, applying to the clutch an updated clutch torque capacity whose magnitude is the sum of the desired clutch torque and the change in engine torque, and producing an updated engine torque whose magnitude is the sum of the desired engine torque and the change in engine torque.
摘要:
A method for operating a vehicle drive train comprising a drive unit, a transmission, and an all-wheel splitter having a clutch. The all-wheel splitter is positioned between the transmission and the output and splits a transmission output torque to vary the torque distribution to driven axles of the output. The split of the output torque to the driven axles is performed by a control unit in such a way that the transmission output torque, less a predetermined nominal torque set by the all-wheel drive strategy, is transferred to a first axle while the nominal torque is transferred to a second axle. When defined operating conditions are met, a clutch monitoring function is activated and the nominal torque is replaced by a torque definition of the clutch monitoring function so that the torque which is transferred by clutch to the second driven axle, is increased, then kept constant, and thereafter reduced.
摘要:
A vehicle includes an internal combustion engine, a transmission having a neutral state and an engaged state, and a controller. The controller is configured to determine a restart condition for the engine; and to classify the restart condition as one of: (i) a no wheel torque restart condition, and (ii) a wheel torque restart condition. The state of the transmission is set based on the restart condition classification, and the engine is started.
摘要:
A method for actuating a clutch (6) of a drivetrain of a motor vehicle such that, when the motor vehicle is rolling downhill with the accelerator pedal not being actuated and when the motor vehicle is coasting on level ground with the accelerator pedal not being actuated, a clutch position of the clutch (6) is determined as a function of a rotational speed difference between an input speed of a transmission (2) of the drivetrain and an idling speed of a power engine (1) of the drivetrain. The method includes the steps of determining the clutch position from the rotational speed difference between the transmission input speed and the power engine idling speed and correcting the clutch position using at least one parameter that depends on acceleration of the motor vehicle.
摘要:
A gear change control device is provided for a straddle-type vehicle having a clutch and a transmission. The device includes a clutch actuator configured to engage and disengage the clutch. A transmission actuator is configured to change a gear of the transmission. At least one sensor is configured to sense an operational condition of the straddle type vehicle. At least one switch is configured to generate a gear change command. A controller is operatively connected to the clutch actuator, the transmission actuator, the at least one sensor, and the at least one switch. The controller is configured to change gears in response to the gear change command and during the gear change reengage the clutch under either a first control routine or second, different control routine based upon the operational condition of the straddle-type vehicle determined by the at least one sensor.
摘要:
When a gear position at a higher speed range than a “specific gear position at a lower speed range” (e.g., first speed) is determined (when the torsional vibration is difficult to occur), a clutch torque is controlled such that a clutch is in a totally engagement state (a revolution speed Ne of an output shaft of an engine=revolution speed Ni of an input shaft of a transmission). On the other hand, when the “specific gear position at the lower speed range” (e.g., first speed) is determined (when the torsional vibration is easy to occur), the clutch torque is controlled such that the clutch is in the semi-engagement state (Ne−Ni=predetermined positive value A). In the semi-engagement state, a “damping action by a slip on the clutch” is acted on the torsional vibration, whereby the amplitude of the torsional vibration can be reduced.
摘要:
In a locking mechanism provided with: a sleeve which is fixed in the circumferential direction and which can be stroked in the shaft line direction; a hub which can rotate in the circumferential direction orthogonal to the shaft line direction; and an actuator which can apply a driving force for displacing the sleeve in the shaft line direction, dog teeth are formed on the inner circumferential surface of the sleeve, and dog teeth are formed in the hub. Here, the engagement surfaces of the dog teeth are inclined at a predetermined angle with respect to the shaft line such that the hub performs relative rotation with respect to the sleeve in a process in which the sleeve is stroked in the shaft line direction. The ECU estimates the stroke volume of the sleeve on the basis of the rotation amount of the hub and the predetermined angle.
摘要:
A method and system for controlling the creeping behavior of a vehicle equipped with an automated clutch (4). According to the method for controlling the creeping behavior of a vehicle equipped with an automated clutch (4), the actuation of a brake actuation element (34) is detected. In addition, a creep parameter, which influences creeping and whose magnitude influences the actuation position of the clutch (4), is modified with an increasing actuation of the brake actuation element (34) to reduce the creeping behavior.