MANIFOLD PRESSURE AND AIR CHARGE MODEL
First Claim
1. An engine controller for an internal combustion engine having a plurality of working chambers, the engine controller comprising:
- a mass air charge determining unit that estimates a mass air charge wherein a firing frequency is used to determine the estimated mass air charge; and
a firing controller arranged to direct firings that delivers a desired engine output wherein fuel is delivered to a working chamber based on the estimated mass air charge.
1 Assignment
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Accused Products
Abstract
In one aspect, an engine controller for an engine including multiple working chambers is described. The engine controller includes a mass air charge determining unit that estimates a mass air charge or amount of air to be delivered to a working chamber. Firing decisions made for a firing window of one or more firing opportunities are used to help determine the mass air charge. The engine controller also includes a firing controller, which is arranged to direct firings to deliver a desired output. Fuel is delivered to a working chamber based on the estimated mass air charge.
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Citations
20 Claims
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1. An engine controller for an internal combustion engine having a plurality of working chambers, the engine controller comprising:
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a mass air charge determining unit that estimates a mass air charge wherein a firing frequency is used to determine the estimated mass air charge; and a firing controller arranged to direct firings that delivers a desired engine output wherein fuel is delivered to a working chamber based on the estimated mass air charge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An engine controller for an internal combustion engine having a plurality of working chambers, the engine controller comprising:
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a mass air charge determining unit that estimates a mass air charge wherein firing decisions made for a firing window of one or more firing opportunities are used to determine the estimated mass air charge; and a firing controller arranged to direct firings that delivers a desired output wherein fuel is delivered to a working chamber based on the estimated mass air charge. - View Dependent Claims (14, 15, 16)
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17. A method for control of an internal combustion engine comprising:
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measuring an air mass flow input into an intake manifold; calculating a firing frequency; determining an intake valve timing; determining an exhaust valve timing; sensing an engine speed; determining a manifold air temperature; and calculating a mass air charge based at least on the air mass flow, the firing frequency, the cam angle, the engine speed, and the manifold air temperature. - View Dependent Claims (18, 19, 20)
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Specification