Engine control system
First Claim
1. An internal combustion engine and control comprising a plurality of combustion chambers, an induction and charge-forming system for supplying fuel to said combustion chambers, means for igniting a charge in each of said combustion chambers for initiating combustion therein, exhaust means for discharging exhaust gases from each of said combustion chambers, a combustion condition sensor for sensing combustion condition in only one of said combustion chambers and providing an output signal indicative of the combustion condition, feedback control means for controlling the said charge-forming device for varying the fuel/air ratio supplied to said combustion chambers in response to the output signal from said combustion condition sensor, means for sensing an engine condition, and means for disabling the operation of at least one other of said combustion chambers under low load, low speed conditions for decreasing the effective displacement and power of said engine.
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Accused Products
Abstract
A feedback control system for a multi-cylinder internal combustion engine that employs a combustion condition sensor that senses the condition in only one combustion chamber at the end of the combustion cycle. The power of the engine can be reduced by disabling cylinders other than that from which the combustion products are sensed.
55 Citations
17 Claims
- 1. An internal combustion engine and control comprising a plurality of combustion chambers, an induction and charge-forming system for supplying fuel to said combustion chambers, means for igniting a charge in each of said combustion chambers for initiating combustion therein, exhaust means for discharging exhaust gases from each of said combustion chambers, a combustion condition sensor for sensing combustion condition in only one of said combustion chambers and providing an output signal indicative of the combustion condition, feedback control means for controlling the said charge-forming device for varying the fuel/air ratio supplied to said combustion chambers in response to the output signal from said combustion condition sensor, means for sensing an engine condition, and means for disabling the operation of at least one other of said combustion chambers under low load, low speed conditions for decreasing the effective displacement and power of said engine.
- 10. A method of operating an internal combustion engine comprising a plurality of combustion chambers, an induction and charge-forming system for supplying fuel to said combustion chambers, means for igniting a charge in each of said combustion chambers for initiating combustion therein, exhaust means for discharging exhaust gases from each of said combustion chambers, said method comprising the steps of sensing the combustion condition in only one of said combustion chambers, controlling the charge-forming device for varying the fuel/air ratio supplied to said combustion chambers in response to the sensed combustion condition, sensing an engine condition, and disabling the operation of at least one other of said combustion chambers under low load, low speed conditions for decreasing the effective displacement and power of said engine.
Specification