Methanol engine low-temperature cold start method

Abstract

The invention discloses a methanol engine low-temperature cold start method. The methanol engine low-temperature cold start method is characterized in that at the time of low-temperature cold start ofa methanol engine, reformed gas produced and manufactured through the methanol online reforming hydrogen production mode is adopted as fuel of the engine to be mixed with air for start combustion. Through the above manner, the problem about difficult low-temperature cold start of the methanol engine can be effectively solved.

Description

technical field [0001] The invention relates to the field of engines, in particular to a method for low-temperature cold start of a methanol fuel engine. Background technique [0002] Methanol is an internationally recognized high-clean energy and an excellent fuel. In theory, only CO2 and H2O are left after methanol is burned. Using the methanol fuel engine as the prime mover to drive the generator to generate electricity will greatly improve the engine's emissions , especially the pollutants emitted by the original gasoline engine will be greatly reduced. [0003] However, the latent heat of vaporization of methanol is 1100MJ / kg, so that the heat absorbed by the vaporization of the same mass of methanol liquid is 3.58 times that of gasoline. At the same time, the flash point of methanol is 12.2°C. When the ambient temperature drops to 15°C, the methanol engine starts from the cold state becomes very difficult. [0004] Among the starting schemes of numerous methanol engi...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above deficiencies in the prior art, the present invention proposes a method for low-temperature cold start of a methanol engine, using the reformed gas produced by online reforming of methanol to produce hydrogen at low temperature for low-temperature cold start of the engine, which can effectively solve the problem of difficult cold start of methanol engines

Images