Abstract: A knocking determination device detects a vibration generated in an internal combustion engine during a predetermined period in each combustion cycle of the internal combustion engine. The knocking determination device performs a knocking determination of a presence or absence of a knock based on a vibration waveform in a predetermined frequency band component of the vibration detected.

Abstract: A fuel injection control device is for a fuel injection system including a fuel injection valve for injecting a fuel in an internal combustion engine. The fuel injection system is configured to perform multiple-stage injection for injecting fuel multiple times in one combustion cycle. The fuel injection control device includes an information acquisition unit to acquire a parameter, which indicates an influence of a pre-stage injection on a post-stage injection, in the pre-stage injection and the post-stage injection subsequent to the pre-stage injection in the multi-stage injection. The fuel injection control device further includes a correction unit to correct a mode of the post-stage injection based on the parameter.

Abstract: A fuel injection control device is for a fuel injection system including a fuel injection valve for injecting a fuel in an internal combustion engine. The fuel injection system is configured to perform multiple-stage injection for injecting fuel multiple times in one combustion cycle. The fuel injection control device includes an information acquisition unit to acquire a parameter, which indicates an influence of a pre-stage injection on a post-stage injection, in the pre-stage injection and the post-stage injection subsequent to the pre-stage injection in the multi-stage injection. The fuel injection control device further includes a correction unit to correct a mode of the post-stage injection based on the parameter.

Abstract: A throttle control CPU drives an electric motor throttle valve control based on an accelerator position. When detecting an abnormality in the throttle opening control system, a main CPU stops driving the electric motor and controls fuel injection amount and/or ignition timing to curb engine output torque increases otherwise caused by a valve opening movement (performed until a cooperative member connected to the throttle valve contacts a restricting member mechanically connected to the accelerator pedal). Thereafter, opening of the throttle valve is regulated according to the accelerator pedal position while the restricting member and the cooperative member remain in contact. The control apparatus smoothly shifts the throttle opening regulation to the fail-safe mode when an abnormality occurs by actively controlling engine speed changes during mode transition.

Abstract: A throttle valve control apparatus serves to electrically drive a throttle valve which adjusts a rate of air flow into an engine mounted on a vehicle. The throttle valve control apparatus includes a lever connected to the throttle valve for movement in an opening direction and a closing direction together with the throttle valve. An opening degree limiting member is located in a side of the lever which corresponds to the opening direction. A spring urges the opening degree limiting member in a direction of closing the throttle valve. An accelerator interlocking and driving device serves to move the opening degree limiting member in accordance with a degree of operation of an accelerator member. A throttle actuator functions to adjust a degree of opening of the throttle valve. A vehicle speed sensor functions to detect a running speed of the vehicle. A guard actuator serves to adjust a position of the opening degree limiting member.

Abstract: A running control apparatus for an engine-driven vehicle includes a throttle command setting unit for setting a throttle command value based on an accelerator operation degree detected by an accelerator operation degree detector, and a throttle opening and closing driving unit controlled by a throttle opening and closing control unit for adjusting the opening of a throttle valve to the throttle command value, the throttle command value being set to change at a change rate smaller than a change rate of the accelerator operation degree in a region where the accelerator operation degree is small, while, to change at the change rate larger than the change rate of the accelerator operation degree in a region where the accelerator operation degree is large, and the running control apparatus further includes an A/T load signal setting unit and an automatic transmission control unit, in which the A/T load signal setting unit sets an A/T load signal so that the A/T load signal approximates to the throttle command valu

Abstract: A throttle valve drive apparatus comprises an actuator which serves to mechanically drive a throttle valve disposed in an intake passage of an internal combustion engine and is controlled in accordance with an instruction from a control unit, an accelerator lever which serves to mechanically drive the throttle valve and to adjust the opening degree of the throttle valve in accordance with an amount of operation performed by an operator, a first clutch disposed between rotary shafts of the actuator and the throttle valve and serving to transmit a turning force from the actuator to the throttle valve, and a second clutch disposed between rotary shafts of the accelerator lever and the throttle valve and serving to transmit the turning force from the accelerator lever to the throttle valve.