Engine fuel economy unit
AssigneeZeta Automotive Limited
InventorsAlan Robert Cox, Gordon Moir Anderson
Life of this patent
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Abstract
A fuel economy unit (30) is disclosed for an engine system comprising an internal combustion engine or electric motor having a demand input, an output member drivable by the engine, and a user-operable demand control (13) for providing a demand signal (P1,P2) coupled to the engine demand input to control the engine output. The fuel economy unit receives an input signal (D) indicative of acceleration of the output member, or from which acceleration of the output member can be derived, and modifies the coupling of the demand signal to the engine demand input in dependence on the acceleration of the output member to limit the acceleration of the output member.
Claims23
A fuel economy unit for an engine system comprising an engine having a demand input, an output member drivable by the engine, and a user-operable demand control for providing a demand signal coupled to the engine demand input to control the engine output, the fuel economy unit comprising:
- means for receiving an input signal indicative of acceleration of the output member or from which acceleration of the output member can be derived;
- and
- means for modifying the coupling of the demand signal to the engine demand input in dependence upon the acceleration of the output member to limit the acceleration of the output member.
An engine system comprising:
- an engine having a demand input;
- an output member drivable by the engine;
- a user-operable demand control for providing a demand signal coupled to the engine demand input to control the engine output;
- and
- a fuel economy unit as claimed in any preceding claim for modifying the coupling of the demand signal to the engine demand input.
Dependencies are inferred from the claim text.