摘要:
An electronic engine control system of an internal combustion engine with a supercharging device operable to produce a desired boost pressure, includes an electronically-controlled throttle valve and a pressure sensor located in an induction system to detect an actual boost pressure. The system computes a target air quantity used in a stratified combustion mode or in a homogeneous lean combustion mode, based on at least an operated amount of an accelerator, and computes the desired boost pressure based on engine speed and engine load, and computes a boost-pressure correction factor as the ratio of the desired boost pressure to the actual boost pressure, during the stratified combustion mode or during the homogeneous lean combustion mode. An arithmetic-calculation section is also provided to compensate for the target air quantity by the boost-pressure correction factor during the stratified combustion mode or during the homogeneous lean combustion mode. The compensated target air quantity is determined as a virtual target air quantity. A throttle actuator device drives the electronically-controlled throttle, so that the virtual target air quantity is drawn into the engine, thus compensating for the response delay in boost-pressure change during acceleration/deceleration in the lean or ultra-lean combustion mode.
摘要:
A throttle actuator varies an actual throttle valve opening degree for an engine in response to a control signal independently of driver's accelerator operation. An engine control unit determines a target torque (or a variable quantity representing the target torque) in accordance with an accelerator opening degree, and normally controls the actual throttle opening degree in a normal mode based on the target torque. In a predetermined operating region where the throttle opening responds too sensitively to a change in the target torque, the control unit controls the throttle opening degree in a constraint mode in accordance with a parameter, such as the accelerator opening degree, independent of the target torque.
摘要:
The disclosed control apparatus and method of an engine of the present invention calculates a target engine torque using an operation amount of an accelerator, converting the target engine torque into a first opening area of a throttle valve, calculates a required air amount at the time of idling, converting the required air amount into a second opening area of the throttle valve, calculates a target total opening area of the throttle valve by adding the first opening area and the second opening area of the throttle valve, calculates a target opening degree of the throttle valve in correspondence to the target total opening area, and outputs the target opening degree to the throttle valve controller which controls an opening degree of the throttle valve.
摘要:
A hybrid electric vehicle runs by torque of an internal combustion engine (11, 111) and torque of an electric motor (13, 116) that are output through a transmission. The transmission comprises a first shaft (21, A113) that is connectable to the internal combustion engine (11, 111), a second rotation shaft (22, A114) that is connectable to the electric motor (13, 116), and a third rotation shaft (23, A112) that is connected to drive wheels (14, 115). A plurality of combinations of gears that are selectively applied are provided between the first rotation shaft (21, A113) and the third rotation shaft (23, A112), and between the second rotation shaft (22, A114) and the third rotation shaft (23, A112). A variety of power transmissions to the drive wheels (14, 115) are made possible by further providing a clutch (64, 151) that connects the first rotation shaft (21, A113) and the second rotation shaft (22, A114).
摘要:
To protect the inverters and motor generators from damage caused by abnormal currents resulting from the sudden changes in voltage that occur when changing the battery voltage. A vehicle equipped with an engine 10* and first and second motor-generators 11 and 12 that can generate electricity by being driven by engine 10* or from regeneration of kinetic energy of the vehicle, power supply line 25 that connects first motor-generator 11 with second motor-generator 12, and battery 23 connected via switch 24 in the middle of electric power supply line 25. When changing the voltage of battery 23, switch 24 is opened before the voltage of battery 23 is changed, and switch 24 is closed only after one of the motor generators 11 and 12 is caused to generate electric power or propel the vehicle in order to reduce the difference in voltage between power supply line 25 and battery 23.
摘要:
A hybrid-vehicle driving system includes an engine, a transmission, a first motor/generator provided between the engine and the transmission, and a battery that can charge and discharge the first motor/generator. When an estimated output voltage of the first motor/generator becomes higher than or equal to a predetermined voltage during a gear shift operation of the transmission, the battery is electrically disconnected from the driving system, and the voltage of a power line on the side of the first motor/generator is then decreased so as to charge the battery.
摘要:
An intake valve control system for an internal combustion engine includes a first valve control mechanism for varying an actual operation angle of an intake valve, a second valve control mechanism for varying an actual maximum lift phase of the intake valve and a control unit that operates the first and second valve control mechanisms to adjust an intake air amount by controlling the operation angle predominantly in a low-intake range and controlling the maximum lift phase predominantly in a high-intake range. The control unit is configured to calculate a target operation angle and a target maximum lift phase according to engine operating conditions so that the actual operation angle and maximum lift phase are controlled to the target operation angle and maximum lift phase, respectively, and correct the target operation angle in a transient operating state where the actual maximum lift phase deviates from the target maximum lift phase.
摘要:
To protect the inverters and motor generators from damage caused by abnormal currents resulting from the sudden changes in voltage that occur when changing the battery voltage. A vehicle equipped with an engine 10* and first and second motor-generators 11 and 12 that can generate electricity by being driven by engine 10* or from regeneration of kinetic energy of the vehicle, power supply line 25 that connects first motor-generator 11 with second motor-generator 12, and battery 23 connected via switch 24 in the middle of electric power supply line 25. When changing the voltage of battery 23, switch 24 is opened before the voltage of battery 23 is changed, and switch 24 is closed only after one of the motor generators 11 and 12 is caused to generate electric power or propel the vehicle in order to reduce the difference in voltage between power supply line 25 and battery 23.
摘要:
A hybrid electric vehicle runs by torque of an internal combustion engine (11, 111) and torque of an electric motor (13, 116) that are output through a transmission. The transmission comprises a first shaft (21, A113) that is connectable to the internal combustion engine (11, 111), a second rotation shaft (22, A114) that is connectable to the electric motor (13, 116), and a third rotation shaft (23, A112) that is connected to drive wheels (14, 115). A plurality of combinations of gears that are selectively applied are provided between the first rotation shaft (21, A113) and the third rotation shaft (23, A112), and between the second rotation shaft (22, A114) and the third rotation shaft (23, A112). A variety of power transmissions to the drive wheels (14, 115) are made possible by further providing a clutch (64, 151) that connects the first rotation shaft (21, A113) and the second rotation shaft (22, A114).
摘要:
A hybrid-vehicle driving system includes an engine, a transmission, a first motor/generator provided between the engine and the transmission, and a battery that can charge and discharge the first motor/generator. When an estimated output voltage of the first motor/generator becomes higher than or equal to a predetermined voltage during a gear shift operation of the transmission, the battery is electrically disconnected from the driving system, and the voltage of a power line on the side of the first motor/generator is then decreased so as to charge the battery.