Ignition timing control appartaus for an internal combustion engine
First Claim
1. An ignition timing control apparatus for an internal combustion engine which comprises:
- a first detecting means for detecting an inner pressure of a cylinder of the engine,a second detecting means for detecting a crank angle of the engine, anda control device which receives the detection signals of said first and second detecting means so that an effective calorific value Q of fuel in one ignition cycle and one of an effective combustion rate K of fuel and a low level calorific value Hu of fuel are calculated on the basis of an inner pressure of cylinder P(θ
) at a crank angle in compression and expansion strokes in said one ignition cycle, the crank angle θ and
a cylinder capacity V(θ
), whereby ignition timing is controlled based on at least one of said effective calorific value Q and said effective combustion rate K.
1 Assignment
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Accused Products
Abstract
An ignition timing control apparatus for an internal combustion engine includes a pressure detector for detecting an inner pressure of cylinder of the engine,
a crank angle detector for detecting a crank angle of the engine, and a control device which receives the detection signals of the pressure detector and the crank angle detector so that an effective calorific value Q of fuel in one ignition cycle and an effective combustion rate K of fuel or a low level calorific value Hu of fuel are calculated on the basis of an inner pressure of cylinder P(θ) at a crank angle in compression and expansion strokes in the one ignition cycle, the crank angle θ and a cylinder capacity V(θ). Ignition timing is controlled based on at least one of the effective calorific value Q and the effective combustion rate K.
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Citations
8 Claims
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1. An ignition timing control apparatus for an internal combustion engine which comprises:
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a first detecting means for detecting an inner pressure of a cylinder of the engine, a second detecting means for detecting a crank angle of the engine, and a control device which receives the detection signals of said first and second detecting means so that an effective calorific value Q of fuel in one ignition cycle and one of an effective combustion rate K of fuel and a low level calorific value Hu of fuel are calculated on the basis of an inner pressure of cylinder P(θ
) at a crank angle in compression and expansion strokes in said one ignition cycle, the crank angle θ and
a cylinder capacity V(θ
), whereby ignition timing is controlled based on at least one of said effective calorific value Q and said effective combustion rate K. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification