Hybrid traction control system
First Claim
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1. In a hybrid traction system of a motor vehicle comprising:
- a power train originating at an engine that generates output power and extending in one direction to at least one auxiliary device that consumes a portion of the output power and in another direction to a differential that apportions the remaining output power between at least one pair of drive wheels;
an engine output power controller that regulates generation of the output power by an engine;
a brake that regulates transmission of the output power along said power train to said pair of drive wheels;
a detector that detects wheel slip of at least one of said pair of drive wheels; and
a control system that responds to the detection of wheel slip by engaging both said engine controller and said brake for reducing the output power transmitted to said pair of drive wheels,the improvement in which said brake is positioned along said power train between said auxiliary device and said engine for reducing the output power transmitted to the differential.
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Abstract
A traction control system combines engine output power limiting with a single point brake for controlling wheel slip. The brake is preferably connected to the engine to reduce torque requirements and avoid drive line shock. One friction member of the preferred brake is coupled to the engine block, and another friction member member is coupled together with a drive pulley to the engine output shaft. An electromagnetic actuator moves the two friction members into engagement with each other within a hollow interior of the drive pulley.
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Citations
28 Claims
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1. In a hybrid traction system of a motor vehicle comprising:
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a power train originating at an engine that generates output power and extending in one direction to at least one auxiliary device that consumes a portion of the output power and in another direction to a differential that apportions the remaining output power between at least one pair of drive wheels; an engine output power controller that regulates generation of the output power by an engine; a brake that regulates transmission of the output power along said power train to said pair of drive wheels; a detector that detects wheel slip of at least one of said pair of drive wheels; and a control system that responds to the detection of wheel slip by engaging both said engine controller and said brake for reducing the output power transmitted to said pair of drive wheels, the improvement in which said brake is positioned along said power train between said auxiliary device and said engine for reducing the output power transmitted to the differential. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A brake mounted on an engine of a motor vehicle comprising:
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an engine block; an output shaft rotatable by power generated within said block; a drive pulley for conveying the power to auxiliary devices; a first member coupled to said engine block; a second member coupled together with said drive pulley to said output shaft; and an actuator for controlling relative movement between said first and second members for developing resistance to rotation of said output shaft with respect to said engine block. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A traction system of a motor vehicle comprising:
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an engine that generates output power having an output shaft rotatable within an engine block; a drive train connected to said output shaft for transmitting the output power to a pair of drive wheels; a drive pulley coupled to said output shaft; a brake located between said engine block and said pulley; a detector that detects wheel slip of at least one of the pair of drive wheels; and a control system that responds to the detection of excessive wheel slip by engaging said brake for reducing the output power transmitted to the pair of drive wheels. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification