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    • 4. 发明授权
    • Fuel pump immobilization
    • 燃油泵固定
    • US6144112A
    • 2000-11-07
    • US417607
    • 1999-10-14
    • Paul Robert Gilmore
    • Paul Robert Gilmore
    • B60R25/04B60R25/00
    • B60R25/042B60R25/24
    • The present invention relates to an apparatus and a method for a motor vehicle security system relating to immobilizing and enabling of a fuel pump for a motor vehicle engine. The system comprises data input means for receiving driver verification data, an engine control unit (ECU) including an ECU processor for controlling engine operation, a pump control unit (PCU) including a PCU processor for controlling the fuel pump, the PCU being separate from the ECU and integrally housed with the fuel pump. Communication links permit communication between the data input means and ECU, and between the ECU and PCU. The ECU processor is activated to control the PCU when valid driver verification data is received. The PCU processor is then activated to communicate a challenge code to the ECU. The ECU and PCU processors then compute respectively a first and a second response code associated with the challenge code. Finally, the PCU immobilizes the fuel pump until such time as the PCU receives from the ECU a first response code which matches the second response code computed by the PCU, whereupon the PCU is activated to control the fuel pump in response to the control of the ECU.
    • 本发明涉及一种用于机动车辆发动机的燃料泵的固定和使能的机动车辆安全系统的装置和方法。 该系统包括用于接收驾驶员验证数据的数据输入装置,包括用于控制发动机操作的ECU处理器的发动机控制单元(ECU),包括用于控制燃料泵的PCU处理器的泵控制单元(PCU),PCU与 ECU并与燃油泵一体安装。 通信链路允许数据输入装置和ECU之间以及ECU与PCU之间的通信。 当接收到有效的驾驶员验证数据时,ECU处理器被激活以控制PCU。 PCU处理器然后被激活以将询问代码传送到ECU。 ECU和PCU处理器然后分别计算与挑战码相关联的第一和第二响应码。 最后,PCU固定燃料泵,直到PCU从ECU接收到与PCU计算的第二响应代码相匹配的第一响应代码,由此PCU被激活以响应于控制 ECU。