Apparatus and method of preventing sudden acceleration of vehicle

A method for preventing sudden acceleration of a vehicle comprising:

• first process of determining whether transmission of a vehicle changes from a stop state to a driving state after starting the vehicle;
• second process of determining that there is no sudden acceleration in case that abrupt increase of rpm is not detected within a first reference time when the vehicle is in an initial stop state as a result of the determination of the first process, determining that there is sudden acceleration in case that the rpm abruptly increases when an accelerator input voltage is less than a reference voltage even in the stop state, and locking an engine and a brake;
• and
• third process of determining sudden acceleration in case that the rpm abruptly increases within a second reference time when the transmission changes from the stop state to the driving state, and locking the engine and the brake.

A method for preventing sudden acceleration of a vehicle comprising:

• first process of determining whether transmission of a vehicle changes from a stop state to a driving state after starting the vehicle;
• second process of determining that there is no sudden acceleration in case that abrupt increase of rpm is not detected within a first reference time when the first process determines that the transmission is in an initial stop state, determining that there is sudden acceleration in case that the rpm abruptly increases when an accelerator input voltage is less than a reference voltage even in the stop state, and locking an engine and a brake;
• third process of determining sudden acceleration in case that the rpm abruptly increases within a second reference time when the transmission changes from the stop state to the driving state, and locking the engine and the brake;
• and
• fourth process for determining sudden acceleration on consideration of a transmission state, a rpm and an acceleration input in case that the second process determines that there is no sudden acceleration, and then determining whether or not locking the engine and the brake.

An apparatus for preventing sudden acceleration of a vehicle comprising:

• rpm detecting means for detecting rpm in order to determine drive of an engine and sudden acceleration;
• transmission detecting means for detecting change of a transmission from a stop state to a driving state;
• sudden acceleration detecting means for detecting sudden acceleration by using outputs of the rpm detecting means and the transmission detecting means;
• first timing pulse generating means for generating timing pulse according to outputs of the sudden acceleration detecting means;
• engine power blocking means for blocking power supply from a battery toward the engine according to a timing pulse from the first timing pulse generating means;
• brake means for braking the vehicle according to the timing pulse from the first timing pulse generating means;
• brake releasing means for releasing the braking means when the braking means operates abnormally;
• braking power supply means for supplying braking power from a battery to the braking means according to the timing pulse from the first timing pulse generating means;
• and
• sudden braking preventing means connected to the braking power supply means and the brake releasing means in order to prevent sudden acceleration when the vehicle is driving.