Speed limiter
First Claim
1. A method of controlling the engine speed of a spark-ignited internal combustion engine, the method including the steps of determining the engine speed demanded by an operator of the engine and comparing this demanded engine speed with a predetermined engine speed limit, wherein if the demanded engine speed exceeds the predetermined engine speed limit, the fuelling rate demanded by the operator is only reduced in order to control the engine speed to the predetermined engine speed limit, and wherein air flow to said spark-ignited engine is directly controlled by the operator of the engine.
1 Assignment
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Accused Products
Abstract
A method of controlling the engine speed of an internal combustion engine, the method including the steps of determining the engine speed demanded by an operator of the engine and comparing this demanded engine speed with a predetermined engine speed limit, wherein if the demanded engine speed exceeds the predetermined engine speed limit, the fuelling rate demanded of the operator is only reduced in order to control the engine speed to the predetermined engine speed limit.
29 Citations
40 Claims
- 1. A method of controlling the engine speed of a spark-ignited internal combustion engine, the method including the steps of determining the engine speed demanded by an operator of the engine and comparing this demanded engine speed with a predetermined engine speed limit, wherein if the demanded engine speed exceeds the predetermined engine speed limit, the fuelling rate demanded by the operator is only reduced in order to control the engine speed to the predetermined engine speed limit, and wherein air flow to said spark-ignited engine is directly controlled by the operator of the engine.
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16. A method of controlling the speed of a vehicle, in which air flow to the engine is directly controlled by an operator of the vehicle, the method including the steps of determining the vehicle speed demanded by the operator of the vehicle and comparing this demanded vehicle speed with a predetermined vehicle speed limit, wherein if the demanded vehicle speed exceeds the predetermined vehicle speed limit, the fuelling rate demanded by the operator is only reduced in order to control the vehicle speed to the predetermined vehicle speed limit.
- 17. A method of controlling the engine speed of a spark-ignited internal combustion engine in which air flow to the spark ignited engine is directly controlled by an operator of the engine including operating the engine in a speed limited mode in response to a demanded engine speed exceeding a predetermined engine speed limit, wherein modified event timings are used during said speed limited mode, said modified event timings varying from the normal event timings which would otherwise be used at the predetermined engine speed.
- 27. An ECU adapted to control the engine speed of a spark-ignited internal combustion engine, including the steps of determining the engine speed demanded by an operator of the engine and comparing this demanded engine speed with a predetermined engine speed limit, wherein if the demanded engine speed exceeds the predetermined engine speed limit, the fuelling rate demanded by the operator is only reduced in order to control the engine speed to the predetermined engine speed limit and wherein air flow to said spark-ignited engine is directly controlled by the operator of the engine.
- 32. An ECU adapted to control the engine speed of a spark-ignited internal combustion engine in which air flow to the engine is directly controlled by an operator of the engine including operating the engine in a speed limited mode in response to a demanded engine speed exceeding a predetermined engine speed limit, wherein modified event timings are used during said speed limited mode, said modified event timings varying from the normal event timings which would otherwise be used at the predetermined engine speed.
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40. A method of controlling the engine speed of a spark-ignited internal combustion engine, wherein the air flow rate is directly controlled by the operator, the method including the steps of determining the engine speed demanded by an operator of the engine, and comparing this demanded engine speed with a predetermined engine speed limit, wherein if the demanded engine speed exceeds the predetermined engine speed limit then air flow to the engine to satisfy a fuelling rate demanded by the operator is only reduced in order to control the engine speed to the predetermined engine speed limit, the actuation of a throttle means by the operator serving as an input which assists determination of the reduction of the air flow when the demanded engine speed is above the predetermined engine speed limit.
Specification