초록 ▼

A system for controlling operation of an internal combustion engine includes a control computer responsive to a number of engine/vehicle operating conditions to control engine operation to thereby control engine speed and engine or vehicle acceleration. In one embodiment, the control computer is con

A system for controlling operation of an internal combustion engine includes a control computer responsive to a number of engine/vehicle operating conditions to control engine operation to thereby control engine speed and engine or vehicle acceleration. In one embodiment, the control computer is configured to determine an engine or vehicle acceleration limit value based on current engine or vehicle speed, and an engine speed limit value based on current engine load, and to control engine fueling and/or speed to thereby limit engine speed to the engine speed limit value and/or engine/vehicle acceleration to the engine/vehicle acceleration limit value. In another embodiment, the control computer is configured to determine a pseudo-load value, which is preferably a vehicle mass value and/or road grade value estimated from current vehicle acceleration and engine fueling conditions, determine an engine speed limit value based on the pseudo-load value and current vehicle speed, and control engine speed and/or fueling to thereby limit engine speed to the pseudo-load-based engine speed limit value. In either case, the concepts of the present invention provide for increased fuel economy by limiting engine speed and/or acceleration during shifting, while providing for additional engine speed, and correspondingly higher engine power, when there exists a legitimate need therefore.

대표청구항 ▼

[ What is claimed is:] [1.] A system for controlling an internal combustion engine, comprising:means for sensing speed of an internal combustion engine and producing a corresponding engine speed signal;means for sensing road speed of a vehicle carrying said engine and producing a corresponding vehic

[ What is claimed is:] [1.] A system for controlling an internal combustion engine, comprising:means for sensing speed of an internal combustion engine and producing a corresponding engine speed signal;means for sensing road speed of a vehicle carrying said engine and producing a corresponding vehicle speed signal;a fuel system responsive to a fueling signal to supply fuel to said engine; anda control computer producing said fueling signal, said control computer responsive to said vehicle speed signal and said fueling signal to determine an estimated vehicle mass value and to at least said vehicle mass value to determine an estimated engine load value, said control computer determining an engine speed limit based on said estimated engine load value and said vehicle speed value and controlling said fueling signal to thereby maintain said engine speed value below said engine speed limit.