초록 ▼

An engine load transient compensation system is disclosed for compensating a vehicle engine in accordance with various engine loads selectively implemented in response to actuation of accessory switches. The accessory switches which selectively implement additional engine loads are series coupled th

An engine load transient compensation system is disclosed for compensating a vehicle engine in accordance with various engine loads selectively implemented in response to actuation of accessory switches. The accessory switches which selectively implement additional engine loads are series coupled through associated resistors to a summing terminal wherein digital switch control signals provided by the switches result in a composite analog signal at the summing terminal whose magnitude is related to the amount of accessory engine load. The summing terminal is provided as an input to a microprocessor which effectively determines whenever a substantial change in engine accessory load is to be implemented in accordance with the accessory switches, and compensation for this engine load transient is provided by the microprocessor in accordance with the magnitude of the change in engine accessory load. The circuitry which provides the composite analog signal related to accessory load is external to the microprocessor thus resulting in providing the microprocessor with only one accessory load input signal and simplifying the operation of the microprocessor.

대표청구항 ▼

An engine load transient compensation system comprising: a plurality of switch means each of which, in response to actuation thereof, provides an associated digital switch signal which in turn implements providing an associated output load to an engine receiving a predetermined fuel mixture; circuit

An engine load transient compensation system comprising: a plurality of switch means each of which, in response to actuation thereof, provides an associated digital switch signal which in turn implements providing an associated output load to an engine receiving a predetermined fuel mixture; circuitry means coupled to said plurality of switch means for receiving said digital switch signals and developing, in response thereto, a composite signal having a signal characteristic related to the total amount of engine load to be provided in accordance with all of said digital switch signals; transient detection means separate from and coupled to said circuitry means for receiving said composite signal as an input and determining a predetermined change in said signal characteristic over a time interval by monitoring said composite signal, rather than by separately monitoring each of said digital switch signals and for providing, in response thereto, a control signal; control means coupled to said transient detection means for receiving said control signal and implementing control of said engine in response to said control signal, wherein said circuitry means receives said digital switch signals and provides in response thereto an analog signal as said composite signal with the magnitude of said analog signal corresponding to said signal characteristic, and said analog signal magnitude being related to the total amount of engine load provided in accordance with actuation of all of said switch means.