| 摘要 |
PURPOSE: A liquefied gas injection system for a car is provided to reduce costs by operating the gas ECU in accordance with the signal output from the gasoline ECU. CONSTITUTION: A liquefied gas injection system comprises a plurality of gas injectors(117) mounted in an intake manifold of a vehicle; a fuel pump for pressurizing the gas existing in a fuel tank; an ECU(103) for storing table map information obtained in accordance with the injection time of intake air to gasoline fuel, calculating an engine speed by using a vehicle speed sensor, calculating time information for controlling the gas injector on the basis of the engine speed and proportional constant, and generating pulse signals for controlling the gas injector on the basis of the time information; and an LPG ECU(105) connected to the ECU, and which receives the table map information in accordance with the injection time of the gasoline fuel, corrects the table map information in such a manner that the information is inversely proportional to the pressure of the fuel pump, calculates a proportional constant in accordance with the fuel injection time, provides the calculated proportional constant to the ECU, receives pulse signals output from the ECU, and converts the received signals into driving signals for driving gas injectors.
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