초록 ▼

Fuel flow and/or engine speed is electrically controlled in accordance with a rate-of-change (acceleration or deceleration) value computed from one or more sensed parameters such as accelerator pedal position, throttle position, engine speed, exhaust temperature, intake manifold pressure, fuel tempe

Fuel flow and/or engine speed is electrically controlled in accordance with a rate-of-change (acceleration or deceleration) value computed from one or more sensed parameters such as accelerator pedal position, throttle position, engine speed, exhaust temperature, intake manifold pressure, fuel temperature, etc. as well as stored engine parameters. A difference between a desired rate-of-change and a measured actual rate-of-change in engine speed is used to correspondingly change an engine control, for example a fuel control rack in a diesel engine fuel pump, a throttle valve in a carburetor, a timer for a fuel injection valve, a fuel valve to a turbine, or other control. The desired rate of change in engine speed may be critically damped, for example by multiplying by a percent or other fraction of a difference between a desired fuel flow and a present fuel flow, so as to avoid overshoot. The control may be operated in min-max, all-speed, cruise control or other special speed control modes, as well as incorporating altitude adjustment, pollution emission control, timing advance control, excessive speed control, fuel control recalibration, counting of selective numbers of pulses from a timing wheel with extension of time for slow speeds, manually selectable low idle adjustment, recordation of operation at excessive engine speed, operating time or other event, fuel consumption economy maximizing, and/or anti-tampering features. In one particular application, the electronic control replaces a governor on a diesel engine and provides maximum power and torque control which may be changed by sensed changed operating conditions such as different transmission gear ranges. A standard computerized control can be employed for different engines with different engine parameters and manufacturing variations compensated by factors stored in ROM during final engine testing.

대표청구항 ▼

An electronic control for controlling an engine, comprising engine speed detecting means for generating an electrical engine speed signal corresponding to the speed of the engine, actual rate-of-change determining means for deriving actual rate-of-change values from the engine speed signal correspon

An electronic control for controlling an engine, comprising engine speed detecting means for generating an electrical engine speed signal corresponding to the speed of the engine, actual rate-of-change determining means for deriving actual rate-of-change values from the engine speed signal corresponding to both increases and deceases in engine speed, desired rate-of-change determining means responsive to a demand factor for deriving desired rate-of-change values corresponding to both increases and decreases in the demand factor, to-be-effected rate-of-change determining means for deriving to-be-effected rate-of-change values corresponding to subtraction of the actual rate-of-change values from the respective desired rate-of-change values, means responsive to the to-be-effected rate-of-change values for correspondingly increasing and decreasing an engine control value, and means responsive to the engine control value for controlling the engine.