Patent ID: 7853367

Claim:
A remote engine control system that remotely controls an engine of a vehicle, the remote engine control system comprising: a relay device that receives a vehicle equipment control request containing first identification information (ID) identifying a remote control device, updates the first identification information in the vehicle equipment control request to second identification information identifying the relay device to obtain an updated vehicle equipment control request, and transmits the updated vehicle equipment control request; and an in-vehicle device arranged in the vehicle, the in-vehicle device including a determining unit that identifies whether identification information in a received vehicle equipment control request is the first identification information or the second identification information, and determines whether the vehicle equipment control request is acceptable based on the identified identification information; a command identifying unit that determines, when the vehicle equipment control request is acceptable, whether the vehicle equipment control request represents a command, and identifies a type of the command; and an engine control unit that remotely controls an engine of the vehicle based on the command, wherein the determining unit accepts a vehicle equipment control request received singularly containing either the first identification information or the second identification information, and rejects a vehicle equipment control request having either the first identification information or the second identification information when the in-vehicle device receives a vehicle equipment control request having the other of the first or second identification information; and wherein the command type is identified by the command identifying unit from a plurality of received vehicle control requests.