Starting method used for methanol engine and methanol engine

Abstract

The invention provides a starting method used for a methanol engine and the methanol engine, and relates to the field of methanol engines. According to the starting method, before the methanol engineis started, the temperature of the engine is detected, and if the temperature before the methanol engine is started is lower than preset temperature, after a control unit receives a starting command,gasoline cold starting gasoline sprayers are controlled to spray gasoline into manifolds on an intake manifold so as to achieve cold starting of the methanol engine. In the method, the gasoline cold starting gasoline sprayers directly spray gasoline into the manifolds of the intake manifold to be mixed with air, the process that gasoline is directly sprayed into an intake pressure stabilization cavity of the intake manifold to be mixed with air and then distributed to the manifolds is avoided, and therefore the spray amount of gasoline can be effectively controlled, the problem of engine coldstarting failing caused by insufficient gasoline supply during cold starting of the methanol engine is avoided, and the problem that during cold starting of the methanol engine, too much gasoline is sprayed, and consequently discharging exceeds standards is avoided.

Description

technical field [0001] The invention relates to the field of methanol engines, in particular to a starting method for the methanol engine and the methanol engine. Background technique [0002] With the intensification of energy pressure and pollution problems, the increase in car ownership, and the diversification of vehicle fuels, methanol is a clean energy, which is not only economical, low-carbon and environmentally friendly, but also reduces carbon dioxide emissions. Methanol fuel engines are gradually becoming more and more popular. in marketization. [0003] The calorific value of methanol is about half of that of diesel or gasoline. The engine needs more than twice as much fuel as diesel or gasoline to produce the same power, and the vaporization heat absorption of methanol fuel of the same quality is more than three times that of gasoline. Combining the two aspects Factors, the heat absorption of methanol vaporization is about eight times that of gasoline of the sam...

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a kind of starting method for methanol engine, to solve the cold start problem that pure methanol brings as vehicle fuel

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