Cold starting system of alcohol fuel engine

Abstract

The invention provides a cold starting system of an alcohol fuel engine. The cold starting system comprises an alcohol fuel supplying system, a cold starting fuel supplying system, an oil track and a control system. The cold starting fuel supplying system is communicated with one end opening of the oil track. The alcohol fuel supplying system comprises an oil inlet pipeline and an oil returning pipeline which are both communicated with the other end opening of the oil track. The control system controls opening of the alcohol fuel supplying system or the cold starting fuel supplying system and controls delaying closing of the oil retuning pipeline in the alcohol fuel supplying system when the cold starting fuel supplying system is opened. The oil inlet mode of the oil track is designed to be a two-in-one-out oil opening quick-connecting mode, the control system is used for carrying out delaying control over the oil returning pipeline, all alcohol fuel in the oil track flows back out of the oil track quickly, it can be ensured that all fuel is gasoline for starting the vehicle, mounting is quick, cost is low, production is easy, the engine is not modified, and the worldwide problem of alcohol fuel vehicle cold starting is completely solved.

Description

technical field [0001] The invention relates to the technical field of alcohol fuel engines, in particular to a cold start system for alcohol fuel engines. Background technique [0002] As we all know, methanol energy is the best substitute for automobile energy, but the combustion of methanol in automobiles has not been greatly promoted under the current technical premise, because methanol has a low ignition point, and at low temperatures, single-burning methanol is not easy to catch fire, and it is difficult to start the engine , so left lead to methanol cars can not be widely promoted. Cold start is an obstacle to the development of methanol vehicles, so solving the cold start of methanol vehicles is a top priority. [0003] At present, there are several ways to solve the cold start of alcohol fuel engines: [0004] 1. Add a certain proportion of gasoline and additives to alcohol fuels. However, the addition of gasoline and additives can cause impurities in the crude o...

AI Technical Summary

Problems solved by technology

[0006] 3. The electric heating line is used to heat the fuel distributor, and the heating line is used to start. This method cannot preheat the engine, but can only heat the fuel in the fuel rail, but it does not achieve cold start at all. In addition, the heating time is long, which consumes a lot of electricity in the battery, and the electricity in the battery will be used up after a long time.

Adding flanges to install fuel injectors and refitting the vehicle into a dual-track dual-injection type is the most advanced cold start device at present, but there are many complicated problems. Many car engines have very small clearances and cannot add flanges. There are many models , the configuration of the flange is difficult, the cost is high, and the use of double-rail double-injection joints will invisibly increase the risk of fuel leakage. Furthermore, he needs to modify the engine, install a flange on the engine, add a set of fuel rails, and replace the front cover of the engine. and intake manifold to be completely disassembled

Users have a skeptical attitude towards the motivation of the change, and it is difficult for users to accept it here

As a result, the technology cannot be fully promoted

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