Methanol fuel engine and start control method thereof

Abstract

The invention discloses a methanol fuel engine and a start control method thereof. The methanol fuel engine comprises an air inlet main pipe, an exhaust main pipe and a plurality of air cylinders. Oneside of each air cylinder is communicated with the inlet main pipe through an inlet manifold, and the other side of each air cylinder is communicated with the exhaust main pipe through an exhaust manifold; a first electric control three-way switching valve is arranged on the air inlet main pipe, the first electric control three-way switching valve comprises an inlet A, an outlet B and an outlet C, and the inlet A and the outlet B are connected to the air inlet main pipe in series; a second electric control three-way switching valve is arranged on the exhaust main pipe, the second electric control three-way switching valve comprises an inlet D, an outlet E and an outlet F, and the inlet D and the outlet E are connected to the exhaust main pipe in series; and a lap joint pipe is connected between the outlet C and the outlet F. The methanol fuel engine disclosed by the invention has the characteristics that 1, a good cold start effect of the methanol fuel engine is realized without usingadditional equipment; and 2, a cold start mode is automatically judged, and full-closed circulating cold start is started.

Description

technical field [0001] The invention relates to the field of engines, in particular to a methanol fuel engine and a starting control method thereof. Background technique [0002] Methanol fuel is increasingly used in automobiles. Once the gas temperature in the methanol engine cylinder is lower than 15°C, it is difficult for methanol to burn normally, which affects the good starting performance of the methanol engine at low temperature and seriously affects the working conditions of the methanol fuel engine. Therefore, in a low temperature environment, the engine is difficult to start, which seriously affects the working conditions of the methanol fuel engine. [0003] How to solve the problem of difficult starting of methanol fueled engines at low temperature is a technical problem urgently needed by those skilled in the art. Contents of the invention [0004] In order to solve the above technical problems, the main purpose of the present invention is to provide a metha...

AI Technical Summary

Problems solved by technology

Once the gas temperature in the methanol engine cylinder is lower than 15°C, it is difficult for methanol to burn normally, which affects the good starting performance of the methanol engine at low temperature and seriously affects the working conditions of the methanol fuel engine.

Therefore, in low temperature environment, the engine is difficult to start, which seriously affects the working conditions of the methanol fuel engine

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