Auxiliary vehicle driving system
First Claim
1. An auxiliary driving system in a vehicle normally driven by transmitting a driving force of an engine to at least one driving wheel of the vehicle through an automatic transmission, comprising:
- an auxiliary driving source capable of driving a wheel independently of the vehicle engine, andmeans for selectively drivingly connecting said auxiliary driving source to at least one wheel of the vehicle upon detection of a combination of predetermined conditions of a side brake switch, a generator output current, and an engine revolution per minute.
1 Assignment
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Accused Products
Abstract
An auxiliary driving system is provided to ensure that a vehicle equipped with an automatic transmission can be moved or permitted to travel without use of the driving force of the vehicle engine in the event of an emergency. The main driving wheels are normally driven through an engine and an automatic transmission and a pair of auxiliary driving wheels are driven by motors. In a usual state, the motors are used to generate an auxiliary driving force or a creep force in the vehicle. However, if the vehicle engine is stopped due to engine trouble or failure, the motors can be driven based on the amount of accelerator pedal depressed to rotate the auxiliary driving wheels and thereby permit the vehicle to travel. Thus, movement of the vehicle can be easily accommodated in the event of an emergency such as when the vehicle engine has failed.
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Citations
16 Claims
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1. An auxiliary driving system in a vehicle normally driven by transmitting a driving force of an engine to at least one driving wheel of the vehicle through an automatic transmission, comprising:
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an auxiliary driving source capable of driving a wheel independently of the vehicle engine, and means for selectively drivingly connecting said auxiliary driving source to at least one wheel of the vehicle upon detection of a combination of predetermined conditions of a side brake switch, a generator output current, and an engine revolution per minute. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12)
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8. An auxiliary driving system in a vehicle normally driven by transmitting a driving force of an engine to a pair of driving wheels of the vehicle through an automatic transmission, comprising:
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an auxiliary driving source capable of being driven independently of the vehicle engine, and means for drivingly connecting said auxiliary driving source to a pair of wheels of the vehicle, and a control unit for actuating said auxiliary driving source and drivingly engaging said source with said wheels upon detection of a combination of predetermined conditions of a side brake switch, a generator output current, and an engine revolution per minute. - View Dependent Claims (13, 14, 15, 16)
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Specification