High compression-ratio methanol engine

Abstract

The invention discloses a high compression-ratio methanol engine which is an improvement on the diesel engine. The high compression-ratio methanol engine comprises a cylinder cover (1), an air inlet manifold, a flywheel disc (16) and a flywheel shell (18). A spark plug mounting hole (7#) is arranged on a diesel injector mounting hole (7); a methanol fuel injector mounting hole (10) is arranged in the appropriate position on the cylinder cover (1); a diesel rail mounting position is left on the air inlet manifold; a timing signal hole (17) is arranged on the flywheel disc (16); and a crankshaft position sensor mounting hole (19) is arranged on the flywheel shell (18). The compression-ratio of the high compression-ratio methanol engine is improved to 14-19, and the lowest consumption rate of the methanol fuel is reduced to 400-480 g / kW.h. The high compression-ratio methanol engine has greatly improved dynamic performance and economic performance and reduced emission.

Description

technical field [0001] The invention relates to an engine, in particular to a methanol engine with a high compression ratio, which is transformed into an ignition methanol engine on the basis of a diesel engine, which retains the high compression ratio characteristics of a compression ignition engine, and belongs to the technical field of internal combustion engines. Background technique [0002] The research and development of domestic methanol vehicles began in the late 1970s. Through nearly 30 years of research and development and demonstration in Shanxi Province, the promotion of methanol fuel has entered the "industrialization promotion stage" from the "experimental demonstration stage". From a comprehensive comparison of continuous fuel supply, fuel economy, safety, environmental protection, transmission and distribution systems, and technical reliability, industry insiders generally believe that coal-to-methanol is a promising alternative fuel, and practice has also pr...

AI Technical Summary

Problems solved by technology

[0011] This technology was studied in detail by a university in the 1980s, but it has not been put into practical use due to problems such as the low replacement rate of methanol blending and the oil pumping control technology of methanol injection and high-pressure oil pumps.

[0012] In short, at present, the technology of using diesel engine to compress and ignite methanol fuel is still immature.

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