[특허]Control system for an electrically propelled traction vehicle

Control system for an electrically propelled traction vehicle 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60L-011/12
출원번호	US-0147234 (1993-10-22)
발명자 / 주소	Duke Amy D. (Erie PA) Beach Frederick G. (Erie PA) Grabowski Francis M. (North East PA) Chung Wing Y. (Erie PA)
출원인 / 주소	General Electric Company (Erie PA 02)
인용정보	피인용 횟수 : 33 인용 특허 : 0

초록 ▼

A control system for an electrical propulsion system for a large wheeled vehicle adapted to haul a payload, the vehicle having an internal combustion engine and an electric generating means driven by the engine. The control system measures selected parameters and controls the engine and generating means to maximize output, and records historical operating data relating to the vehicle and its systems, and has a 2 digit display that provides information useful in troubleshooting problems. The control system also enhances fuel consumption by conserving fuel use, particularly on flat terrain and when the vehicle is approaching the overspeed point. Depression of the foot pedal is no longer input directly to the engine controller. Based on the amount of depression of the foot pedal, a fuel enhancement means determines the horsepower request from the operator of the foot pedal, but generates an engine rpm signal which will run the engine at only the rpm necessary to provide the power. The fuel enhancement means is further adapted to conserve fuel usage during periods of vehicle coast and electric brake by requiring minimum engine rpm to maintain sufficient cooling of vehicle equipment.

대표청구항 ▼

A control system for an electrical propulsion system for a wheeled vehicle adapted to haul a payload, the vehicle being equipped with a plurality of adjustable speed electric traction motors mechanically coupled in driving relation to separate wheels on the vehicle, the vehicle having an internal combustion engine and a foot pedal input for demanding horsepower from the internal combustion engine, the vehicle further having an electric generating means operatively connected to the engine and to the traction motors and providing electric power at its output for energizing the traction motors, the electric generating means being of the type which can vary the voltage and current of the electric power provided at its output responsive to control signals being applied thereto and having a first predetermined operating temperature of a component thereof that correlates to a rating at which continuous operation can occur without substantial risk of damage thereto, and a maximum predetermined operating temperature higher than the first predetermined operating temperature of the component during which continuous operation would create a substantial risk of damage to the electric generating means, said control system comprising: processing means including memory means for controlling the operation of the internal combustion engine and the electric generating means; means for measuring the ambient temperature of the environment in which the vehicle is operating and generating a signal indicative of said measured ambient temperature and applying the same to said processing means; means for measuring the output voltage of the electric generating means and generating a signal indicative of said measured output voltage and applying the same to said processing means; means for measuring the output current of the electric generating means and generating a signal indicative of said measured output current and applying the same to said processing means; fuel enhancement means for determining the horsepower demand from the foot pedal input and generating a horsepower request signal to the processing means indicative of a rpm necessary to provide required power in a propel mode; said processing means being adapted to generate control signals, including an engine rpm signal based on the horsepower request signal from the fuel enhancement means and apply the same to the vehicle engine to conserve fuel usage.

이 특허를 인용한 특허 (33)

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Ganev,Evgeni, Hybrid-electric vehicle having a matched reactance machine.
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Bailey, Bradley, Load demand and power generation balancing in direct series electric drive system.
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Hoff,Brian D.; Akasam,Sivaprasad; Baker,Thomas M., Method and system for providing work machine multi-functional user interface.
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Kumar,Ajith Kuttannair; Valentine,Peter Loring, Method for eliminating fuel use during dynamic braking.
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Boisvert, Mario; Perrin, Randall; Washeleski, John, Monitoring system.
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Nguyen,That; Zhao,Qihua, Multi-stage dynamic braking resistor network.
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Williams, Joshua, Over-voltage and under-voltage management for electric drive system.
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Boisvert Mario ; Catudal Michel, Power window or panel controller.
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Wang, Jianming; Qi, Lie; Teng, Yuntang, Road surface self-adapting anti-slip anti-lock control method for electrically driven mine vehicle.
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S. Miller Weisman, II, System and method for engine data trending and analysis.
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Weisman, II, S. Miller; Letang, Dennis M., System and method for engine data trending and analysis.
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