Vehicle anti-theft engine control device

• US 5,621,381 A
• Filed: 06/05/1995
• Issued: 04/15/1997
• Est. Priority Date: 01/27/1995
• Status: Expired due to Fees

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Iwasaki, Kenji, Kawachi, Takashi, Ohtsuka, Satoru, Matsuura, Masanori, Kubota, Shinichi, Mutoh, Eiji
• Primary Examiner(s): Hofsass, Jeffery
• Assistant Examiner(s): GHANNAM, MOHAMM
• Application Number:
  US08/464,375
• Time in Patent Office: 680 Days
• Field of Search: 340/426, 340/425.5, 307/10.5, 307/10.2
• US Class Current: 340/426.35
• CPC Class Codes: B60R 25/04 operating on the propulsion system, e.g. engine or drive motor

Abstract

A vehicle anti-theft engine control device enables engine control to be continued even if the data in the memory, wherein an ID code checking result has been stored, incurs "bit change" due to noise or the like, causing the data to change into data prohibiting engine control. The control device comprises a plurality of engine start enable flags for storing information on the enable/disable state of the engine control, enable flag registering means for registering "1" (enable) in all flags in response to a start permit signal, re-registering means for registering again, when "1" has been registered in at least one of the flags, "1" (enable) in all other enable flags, and control enabling means for enabling the engine control in accordance with the registered/reregistered enable flag.

Claims

1. A vehicle anti-theft engine control unit comprising:

a theft detector for comparing an ID code received from outside a vehicles with a reference ID code stored in the vehicle in advance and for generating a validation signal when the two ID codes have a predetermined relationship; and

an engine control means for executing engine start control in response to said validation signal;

said engine control means comprising;

a plurality of enable/disable information storing means for storing information related to the enable and disable of the engine control,

enable information registering means for registering enable information in said respective enable/disable information storing means in response to the validation signal received from said theft detector,

re-registering means for registering, when the enable information has been registered in at least one of the respective enable/disable information storing means, the enable information in every other enable/disable information storing means which does not store the enable information, and

control enabling means for enabling the engine control in accordance with the enable information stored in any of the enable/disable information storing means.

2. A vehicle anti-theft engine control unit according to claim 1, wherein said enable/disable information is stored as a bit-data flag.