Process and System for Controlling Engine Speed
First Claim
1. A control process for controlling an engine speed governor of an engine, the process comprising the steps of:
- calculating the current engine power being developed by the engine;
determining an appropriate engine speed for the current engine power based upon a first engine map;
instructing the speed governor to adjust the engine speed in accordance with the first map if required;
monitoring for desired engine power requests;
calculating a power ratio of desired engine power versus current engine power upon receiving a desired engine power request;
establishing an engine speed adjustment value based upon a second engine map of power ratio versus speed adjustment value; and
instructing the speed governor to adjust the engine speed in accordance with the speed adjustment value.
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Accused Products
Abstract
A control process for controlling an engine speed governor of an engine is provided. The process comprises the steps of calculating the current engine power being developed by the engine, and determining an appropriate engine speed for the current engine power based upon a first engine map. The process then instructs the speed governor to adjust the engine speed in accordance with the first map if required. The process monitors for desired engine power requests, and calculates a power ratio of desired engine power versus current engine power upon receiving a desired engine power request. The process then establishes an engine speed adjustment value based upon a second engine map of power ratio versus speed adjustment value, and instructs the speed governor to adjust the engine speed in accordance with the speed adjustment value. A speed governor system incorporating the control process, and a work machine or vehicle incorporating such a system are also provided.
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Citations
11 Claims
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1. A control process for controlling an engine speed governor of an engine, the process comprising the steps of:
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calculating the current engine power being developed by the engine; determining an appropriate engine speed for the current engine power based upon a first engine map; instructing the speed governor to adjust the engine speed in accordance with the first map if required; monitoring for desired engine power requests; calculating a power ratio of desired engine power versus current engine power upon receiving a desired engine power request; establishing an engine speed adjustment value based upon a second engine map of power ratio versus speed adjustment value; and instructing the speed governor to adjust the engine speed in accordance with the speed adjustment value. - View Dependent Claims (2, 3, 4, 5)
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6. A speed governor system for an engine, the system comprising:
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a plurality of engine sensors monitoring parameters associated with the engine; a supervisory controller monitoring for desired engine power requests; an engine controller which receives signals from the engine sensors and/or supervisory controller and applies a control process in response to one or more of those signals, the control process comprising the steps of; calculating the current engine power being developed by the engine based upon one or more engine sensor signals; determining an appropriate engine speed for the current engine power based upon a first engine map; generating a speed governor signal to adjust the engine speed in accordance with the first map if required; monitoring for desired engine power requests from the supervisory controller; calculating a power ratio of desired engine power versus current engine power upon receiving a desired engine power request; and establishing an engine speed adjustment value based upon a second map of power ratio versus speed adjustment value; and the system further comprising; an engine speed governor which adjusts the speed of the engine in response to the speed governor signal and/or engine speed adjustment value established by the engine controller. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification