Abstract: An engine and transmission control system is responsive to manipulation of manually operated control devices which can cause actions which result in increased load on the vehicle engine, before the engine actually begins to be effected by the load increase. The control system monitors manipulation of control devices and engine load, and when engine load decreases, the system stores the identity and displacement direction of the manipulated control device. When the same control device is then manipulated in the opposite direction, the control system will begin to temporarily boost or raise engine rpm and decrease the transmission ratio in anticipation of the expected load. After the control system has boosted the engine rpm, it monitors whether or not the engine speed was boosted high enough to prevent the engine speed from dropping below a threshold.

Abstract: An engine and transmission control system is responsive to manipulation of manually operated control devices which can cause actions which result in increased load on the vehicle engine, before the engine actually begins to be effected by the load increase. The control system monitors manipulation of control devices and engine load, and when engine load decreases, the system stores the identity and displacement direction of the manipulated control device. When the same control device is then manipulated in the opposite direction, the control system will begin to temporarily boost or raise engine rpm and decrease the transmission ratio in anticipation of the expected load. After the control system has boosted the engine rpm, it monitors whether or not the engine speed was boosted high enough to prevent the engine speed from dropping below a threshold.

Abstract: A hydraulic function can be extended and retracted under the control of an electrohydraulic valve unit. An operator movable command lever is movable into extend, center and retract region. A sensor generates a lever position signal. An electronic lever command unit receives the lever position signal and generates a valve command signal. An electronic valve control unit is remote from and communicated with the lever command unit. The electronic valve control unit controls communication of hydraulic fluid to the hydraulic function in response to the valve command signal. A method of generating the valve command signal includes generating a command signal which is proportional to the lever position signal when the lever is moved relatively slowly, and generating a command signal which is based on a maximum excursion of the lever into the extend and retract regions when the lever is moved relatively rapidly.

Abstract: An engine and transmission control system is responsive to manipulation of manually operated control devices which can cause actions which result in increased load on the vehicle engine, before the engine actually begins to be effected by the load increase. The control system monitors manipulation of control devices and engine load, and when engine load decreases, the system stores the identity and displacement direction of the manipulated control device. When the same control device is then manipulated in the opposite direction, the control system will begin to temporarily boost or raise engine rpm and decrease the transmission ratio in anticipation of the expected load. After the control system has boosted the engine rpm, it monitors whether or not the engine speed was boosted high enough to prevent the engine speed from dropping below a threshold.

Abstract: A hydraulic function can be extended and retracted under the control of an electrohydraulic valve unit. An operator movable command lever is movable into extend, center and retract region. A sensor generates a lever position signal. An electronic lever command unit receives the lever position signal and generates a valve command signal. An electronic valve control unit is remote from and communicated with the lever command unit. The electronic valve control unit controls communication of hydraulic fluid to the hydraulic function in response to the valve command signal. A method of generating the valve command signal includes generating a command signal which is proportional to the lever position signal when the lever is moved relatively slowly, and generating a command signal which is based on a maximum excursion of the lever into the extend and retract regions when the lever is moved relatively rapidly.