摘要:
A device for automatically stopping and restarting an internal combustion engine is provided with a crank angle sensor (1) that detects a crank angle of an engine (10), a fuel injection unit (11) that injects fuel into the engine, and the device is also provided with a starter activation prohibition determination means that prohibits activation of a starter (20) by determining that the engine is in reverse rotation during inertial rotation of the engine, and removes the starter activation prohibition depending on the crank angle when the engine starts reverse rotation.
摘要:
An internal-combustion-engine automatic stop and restart system performs restarting control by making the pinion pushing unit push out the pinion gear so as to engage with the ring gear, when the restarting condition is satisfied in a time period from a time when the automatic stopping condition is satisfied to a time when the rotation of the internal combustion engine stops. A throttle valve control unit opens the throttle valve even when the restarting condition has not been satisfied and stops control of the throttle valve in a time period from when the rotation of the internal combustion engine stops to when the restarting condition is satisfied, when the rotation speed of the internal combustion engine becomes lower than a predetermined value in a time period from when the automatic stopping condition is satisfied to when the rotation of the internal combustion engine stops.
摘要:
A control device of a transmission is capable of instantaneously correcting a torque shortly after starting a motor, and properly correcting a gear operation shortly after starting (at transient time) even in case of coil temperature change. The device includes a gear change end determination unit, a motor stop determination unit, and a coil resistance estimation unit of estimating a coil resistance of the motor alternately by repeating at regular intervals a state of application of a predetermined voltage to the motor during stop before start of gear change and a state of no application; and when the motor is determined stop by the determination units, an initial value of a command voltage to be applied to the motor after start of gear change is corrected in a predetermined time period in accordance with a coil resistance value having been calculated by the coil resistance estimation unit.
摘要:
In a case where the end of a gear change has been decided by gear change end decision means for deciding if a transmission has undergone the gear change, the coil resistance value of a motor which manipulates the transmission is measured by coil resistance measurement means. The coil temperature of the motor is estimated from the measured coil resistance value of the motor by coil temperature estimation means. In a case where the estimated coil temperature of the motor has been decided to be predetermined temperature or above by high-temperature decision means, the speed change inhibition time period of the transmission is calculated by speed change inhibition time calculation means, and the speed change of the transmission is inhibited during the calculated speed change inhibition time period.
摘要:
Provided is a device for performing an automatic stop operation for an internal combustion engine when a predetermined automatic stop requirement is satisfied during an operation of the internal combustion engine and performing a restart operation for the internal combustion engine when a predetermined restart requirement is satisfied during an automatic stop time period of the internal combustion engine. In the device, restart control means (22) executes fuel injection control at the time of start of the restart operation by determining whether or not initial asynchronous injection of a fuel into a cylinder that is in an intake stroke is executable in accordance with an initially detected crank angle after the start of the restart operation and determining a next fuel injection cylinder and a fuel injection timing for the next fuel injection cylinder.
摘要:
The automatic/stop restart device includes a restart control module for performing restart control for the internal combustion engine by pushing out a pinion gear (17) by a pinion-gear push-out device (18) to bring the pinion gear into meshing engagement with a ring gear (16) when the restart requirement is satisfied before the rotation of the internal combustion engine is stopped after an automatic stop requirement is satisfied. The pinion gear is pushed out when the restart requirement is satisfied when a rotation speed of the internal combustion engine is equal to or lower than a predetermined rotation speed. At the same time, a starter motor (19) is driven by a starter-motor waiting-time adjustment module for adjusting a driving waiting time for the starter motor (19) according to the rotation speed of the internal combustion engine obtained when the restart requirement is satisfied. In this manner, the restart is quickly performed.
摘要:
In an engine automatic-stop/restart system according to the present invention, in the case where an engine self-restoration determination unit determines that an engine can autonomously be restored, fuel supply by a fuel injection control unit is resumed so that the engine is autonomously restored; and in the case where the engine self-restoration determination unit determines that the engine cannot autonomously be restored, the fuel supply by the fuel injection control unit is resumed, and based on an engine rotation speed detected by the engine rotation speed detection unit, a pinion gear rotation speed detected by the pinion gear rotation speed detection unit, and the result of determination by the engine self-restoration determination unit, there is performed the energization or de-energization of the pinion gear driving unit and the starter motor.
摘要:
Provided is an automatic stop and restart device for an engine that is capable of suppressing occurrence of an abnormal condition even if a transmission state is changed during an engine restart process after an engine restart condition is satisfied in an automatic engine stop process. A controller performs the automatic engine stop process and the engine restart process. If a determined state of a transmission is a drive range, a transmission state determination unit drives a pinion gear thrust unit at timing determined by a first pinion gear thrust timing determination unit. If the determined state of the transmission is a non-drive range, the transmission state determination unit drives the pinion gear thrust unit at timing determined by a second pinion gear thrust timing determination unit.
摘要:
A control device of a transmission is capable of instantaneously correcting a torque shortly after starting a motor, and properly correcting a gear operation shortly after starting (at transient time) even in case of coil temperature change. The device includes a gear change end determination unit, a motor stop determination unit, and a coil resistance estimation unit of estimating a coil resistance of the motor alternately by repeating at regular intervals a state of application of a predetermined voltage to the motor during stop before start of gear change and a state of no application; and when the motor is determined stop by the determination units, an initial value of a command voltage to be applied to the motor after start of gear change is corrected in a predetermined time period in accordance with a coil resistance value having been calculated by the coil resistance estimation unit.
摘要:
The automatic/stop restart device includes a restart control module for performing restart control for the internal combustion engine by pushing out a pinion gear (17) by a pinion-gear push-out device (18) to bring the pinion gear into meshing engagement with a ring gear (16) when the restart requirement is satisfied before the rotation of the internal combustion engine is stopped after an automatic stop requirement is satisfied. The pinion gear is pushed out when the restart requirement is satisfied when a rotation speed of the internal combustion engine is equal to or lower than a predetermined rotation speed. At the same time, a starter motor (19) is driven by a starter-motor waiting-time adjustment module for adjusting a driving waiting time for the starter motor (19) according to the rotation speed of the internal combustion engine obtained when the restart requirement is satisfied. In this manner, the restart is quickly performed.