Engine control system and method
First Claim
1. A method for controlling an internal combustion engine having at least one variable volume chamber in which combustion occurs, an induction system for delivering an air charge to said chamber, a fuel charging system for delivering a fuel charge to said chamber for combustion therein, an exhaust system for discharging combustion products from said chamber, said method comprising the steps of sensing the rate of combustion in said chamber at at least one relative volume of said chamber, comparing the measured rate of combustion with a target value, and adjusting at least one of said systems in a direction to establish the target value of rate of combustion.
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Accused Products
Abstract
A number of embodiments of engine controls and engine control methods that employ instantaneous rate of combustion is the combustion chamber at a sensed parameter. Rate of combustion is determined by a linear equation based upon data arrived from combustion chamber pressures. The system is adapted to operate under different control modes so as to provide specific control for normal running, lean burn, maximum torque, cold starting, transient conditions, and/or knock control.
97 Citations
58 Claims
- 1. A method for controlling an internal combustion engine having at least one variable volume chamber in which combustion occurs, an induction system for delivering an air charge to said chamber, a fuel charging system for delivering a fuel charge to said chamber for combustion therein, an exhaust system for discharging combustion products from said chamber, said method comprising the steps of sensing the rate of combustion in said chamber at at least one relative volume of said chamber, comparing the measured rate of combustion with a target value, and adjusting at least one of said systems in a direction to establish the target value of rate of combustion.
- 30. An internal combustion engine having at least one variable volume chamber in which combustion occurs, an induction system for delivering an air charge to said chamber, a fuel charging system for delivering a fuel charge to said chamber for combustion therein, an exhaust system for discharging combustion products from said chamber, means for sensing the rate of combustion in said chamber at at least one relative volume of said chamber, means for comparing the measured rate of combustion with a target value, and means for adjusting at least one of said systems in a direction to establish the target value of rate of combustion.
Specification