Vehicle speed signal selection method and vehicle speed signal adjustment verification method
First Claim
1. A vehicle speed signal selection method, comprising:
- determining, in a communication checking step, whether all control units of a vehicle receive a communication message, and an engine control unit receives the communication message from an ABS control unit;
determining, in a wheel speed sensor checking step, whether the engine control unit receives a vehicle speed signal of a wheel speed sensor from the wheel speed sensor, when it is determined that all the control units of the vehicle do not receive the communication message or the engine control unit does not receive the communication message from the ABS control unit;
determining, in an emission regulation checking step, whether the engine control unit is meant for receiving the vehicle speed signal of the wheel speed sensor from the wheel speed sensor, when it is determined that the engine control unit does not receive the vehicle speed signal of the wheel speed sensor; and
determining, in a transmission checking step, whether the vehicle is an automatic transmission vehicle, when it is determined that the engine control unit is not meant for receiving the vehicle speed signal of the wheel speed sensor.
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Accused Products
Abstract
A vehicle speed signal adjustment verification method may include an accelerator and vehicle speed change measuring step to obtain a change of an accelerator pedal sensor and a vehicle speed change calculated by an engine control unit, a change comparing step to determine whether the change of the vehicle speed calculated by the engine control unit is within a predetermined range as compared with the change of the accelerator pedal sensor, and a vehicle speed signal changing step to change a vehicle speed signal inputted into the engine control unit, if it is determined that the change of the vehicle speed calculated by the engine control unit is not within the predetermined range as compared with the change of the accelerator pedal sensor.
4 Citations
10 Claims
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1. A vehicle speed signal selection method, comprising:
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determining, in a communication checking step, whether all control units of a vehicle receive a communication message, and an engine control unit receives the communication message from an ABS control unit; determining, in a wheel speed sensor checking step, whether the engine control unit receives a vehicle speed signal of a wheel speed sensor from the wheel speed sensor, when it is determined that all the control units of the vehicle do not receive the communication message or the engine control unit does not receive the communication message from the ABS control unit; determining, in an emission regulation checking step, whether the engine control unit is meant for receiving the vehicle speed signal of the wheel speed sensor from the wheel speed sensor, when it is determined that the engine control unit does not receive the vehicle speed signal of the wheel speed sensor; and determining, in a transmission checking step, whether the vehicle is an automatic transmission vehicle, when it is determined that the engine control unit is not meant for receiving the vehicle speed signal of the wheel speed sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification