LNG engine vaporizer control system with the controllable fuel gas temperature

Abstract

The invention discloses an LNG engine vaporizer control system with controllable fuel gas temperature. The LNG engine vaporizer control system comprises an LNG vaporizer, an engine, a fuel gas temperature sensor and an ECU, wherein the LNG vaporizer is used for gasifying fuel gas; a gas inlet of the engine communicates with a fuel gas outlet of the LNG vaporizer through a fuel gas pipeline; the gasified fuel gas enters the engine through the fuel gas pipeline, and a water outlet of the engine communicates with a water inlet of the LNG vaporizer through a water inlet pipeline; the fuel gas temperature sensor is arranged on the fuel gas pipeline and used for measuring the fuel gas temperature of the fuel gas outlet of the LNG vaporizer and generating a fuel gas temperature signal; and the ECU is in signal connection with the fuel gas temperature sensor and the engine and used for receiving the fuel gas temperature signal and adjusting the load limit of the engine according to the fuel gas temperature signal. In the abovementioned way, the LNG engine vaporizer control system with the controllable fuel gas temperature eliminates the risk that the fuel temperature is low.

Description

technical field [0001] The invention relates to the technical field of power machinery, in particular to an LNG engine carburetor control system with controllable gas temperature. Background technique [0002] LNG is a low-temperature liquid storage fuel at -162°C, which needs to be vaporized by a carburetor to meet the requirements of vehicles. The LNG carburetors currently used in vehicles are mostly directly heated by engine coolant, relying on the engine water pump and engine water temperature, and the temperature after vaporization is uncontrollable, which has the following disadvantages: [0003] 1. In a low temperature environment, when the engine is just started, the engine coolant temperature is low, the LNG vaporization capacity is insufficient, and the gas temperature behind the carburetor is too low, which may cause the coolant to freeze; [0004] 2. In high temperature environment and engine coolant temperature is high, the heating capacity of the LNG carbureto...

AI Technical Summary

Problems solved by technology

[0003] 1. In a low temperature environment, when the engine is just started, the engine coolant temperature is low, the LNG vaporization capacity is insufficient, and the gas temperature behind the carburetor is too low, which may cause the coolant to freeze;

[0004] 2. When the temperature of the engine coolant is high in a high temperature environment, the heating capacity of the LNG carburetor is too strong, and the temperature of the gas behind the carburetor is too high, which may cause abnormal engine control

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