A hybrid power supply system for an engine is disclosed. The hybrid power supply system includes a sensing unit to generate a signal indicative of a speed of the engine and a controller to determine the speed of the engine based on the signal received from the sensing unit. The controller compares the speed of the engine with a predefined maximum idle speed, and cuts off a supply of fuel to the engine, when the speed of the engine is greater than or equal to the predefined maximum idle speed. The controller shuts off an inlet valve and an exhaust valve associated with a cylinder of the engine. The closure of the inlet valve and the exhaust valve allow compression and expansion of air within the cylinder during supply of a rotational power by a flywheel.

A method of controlling lash crossing in a hybrid electric automotive powertrain. During deceleration while the powertrain is operating in electric only mode, an input is slowed to a first speed lower than an idle speed of an internal combustion engine. Lash crossing is delayed until the input has slowed to the first speed. When the first speed is zero, lash crossing is delayed until receipt of an acceleration request.

An engine control method for preventing an engine of a vehicle from stalling on a sloped road includes steps of: detecting whether a shifting lever is in a neutral stage (N-stage); measuring a vehicle speed and a slope angle of the sloped road, and calculating a load acting on a vehicle body on the sloped road; accelerating an engine a first time to increase an engine RPM so that an engine torque is larger than the load; and accelerating the engine a second time to move the vehicle when the shifting lever enters into a driving gear stage (D-stage).

A vehicle transmission has a continuously variable speed change mechanism provided between an input shaft to which a torque output by a driving force source is transmitted and an output shaft from which a torque is output to a driving wheel. The transmission is able to selectively block torque transmission between the mechanism and the output shaft. The mechanism is rotated by the driving force source with torque transmission between the mechanism and the output shaft blocked. A control apparatus limits a shifting speed of the mechanism to or below an upper-limit speed determined in advance in a case where a speed ratio of the mechanism is changed with the mechanism rotated by the driving force source that is subjected to idling rotational speed control, while the mechanism is blocked from the output shaft such that no torque is transmitted between the mechanism and the output shaft.

A vehicle control system is provided which includes a travel controller working to execute a coasting mode to cut transmission of drive power, as produced by an engine to a drive wheel of the vehicle when a given execution condition is encountered while the vehicle is traveling. The travel controller determines a threshold value, as used for comparison with a position of an accelerator, based on the speed of the vehicle. When the position of the accelerator is determined to be smaller than the threshold value, the travel controller executes the coasting mode. This improves the fuel economy in the vehicle without sacrificing traveling of the vehicle according to a driver's operation on the accelerator.

A clutch control system for vehicle is applied to a vehicle having a clutch and a transmission disposed in a power transmission path from an engine to a vehicle wheel. The system includes a first rotational speed detecting unit to detect a driving side rotational speed of the clutch, a second rotational speed detecting unit to detect a driven side rotational speed of the clutch, a half-clutch control unit, and a half-clutch transition control unit. The half-clutch control unit executes a first half-clutch control on the clutch actuator when a gear position of the transmission and a rotational direction of a driven side portion of the clutch are matched and executes, on the clutch actuator, a second half-clutch control, differing from the first half-clutch control, when the gear position of the transmission and the rotational direction of the driven side portion of the clutch are not matched.

Methods of operating internal combustion engines are provided. A controller detects a coasting event while an associated vehicle is in motion. In response to the coasting event, the controller directs at least a portion of an exhaust gas output by an exhaust system of an internal combustion engine of the vehicle into an intake system of the internal combustion engine.

A hybrid power supply system for an engine is disclosed. The hybrid power supply system includes a sensing unit to generate a signal indicative of a speed of the engine and a controller to determine the speed of the engine based on the signal received from the sensing unit. The controller compares the speed of the engine with a predefined maximum idle speed, and cuts off a supply of fuel to the engine, when the speed of the engine is greater than or equal to the predefined maximum idle speed. The controller shuts off an inlet valve and an exhaust valve associated with a cylinder of the engine. The closure of the inlet valve and the exhaust valve allow compression and expansion of air within the cylinder during supply of a rotational power by a flywheel.

A method for implementing and canceling an automatic operation of a body of a machine includes receiving a selection of an automatic setting according to a first operation of a hoist mode actuator, determining an activation state of the automatic setting, causing an automatic operation of an engine of the machine to adjust an idle level of the engine and an automatic operation of a hoist system to move the body in a first direction to a first position. The method includes canceling the automatic operation of the engine and the automatic operation of the hoist system and controlling the idle level of the engine according to operations of a throttle, the hoist system to move the body according to the idle level of the engine and respective directions of the second operation the hoist mode actuator and subsequent operations of the hoist mode actuator.

In a vehicle including a power supply network for electrical consumers, a battery, an engine, and a generator coupled to the engine to supply electrical energy to the battery and to the power supply network, an operation saving device includes an electronic processor configured to raise an idling speed of the engine when the battery is disconnected from the power supply network.