Abstract: A pressure accumulation system for an internal combustion engine can prevent exhaust pressure from excessively increasing when pressurized gas is contained in a pressure accumulation container. A pressure accumulation system is applied for an internal combustion engine provided with an exhaust shut-off valve mounted in an exhaust path. The pressure accumulation system has a pressure accumulation tank into which gas can be introduced from that portion of an exhaust path. The pressure accumulation system also has a sensor for detecting the exhaust pressure, and an EGR valve is controlled based on the detection value from the exhaust gas sensor such that the pressure in that portion of the exhaust path which is on the upstream of the exhaust shut-off valve is limited below a predetermined exhaust gas upper limit value (Pmax) when gas is contained in the pressure accumulation tank.

Abstract: A skidder having a diesel engine coupled to a multiple gear ratio transmission driving a pair of wheel sets for a skidder. The diesel engine is controlled by an operator manipulated foot pedal or hand lever to control the power output and ultimately the maximum skidder ground speed. A controller is provided to pre-select the maximum gear into which the transmission may be placed to ultimately limit the maximum ground speed of the skidder so that the operator sets the forward speed in a binary fashion by depressing the foot pedal or hand operated device to a maximum output condition.

Abstract: Disclosed is a computer-implemented method for initiating forward motion in a vehicle equipped with a manual transmission. The method includes the steps of providing a sensor for determining clutch status; providing a sensor for determining when a transmission of a vehicle is in first gear; providing a throttle actuator calibrated to raise engine revolutions per minute from idle to a predetermined elevated level upon receipt of a throttle-up signal; and providing a control unit to receive inputs from the clutch and gear status sensors. The control unit is programmed to deliver the throttle-up signal to the throttle actuator when the sensor of clutch status indicates that a change in clutch status from engaged to non-engaged, and the gear sensor indicates that the vehicle is in first gear.