High-melting-point fatty acid methyl ester or ethyl ester oil supply system

Abstract

The invention discloses a high-melting-point fatty acid methyl ester or ethyl ester oil supply system which comprises a double-acting hydraulic cylinder, a high-pressure diesel oil supply unit, a low-pressure fatty acid methyl ester or ethyl ester supply unit and a fatty acid methyl ester or ethyl ester in-cylinder direct injection unit. The double-acting hydraulic cylinder comprises a hydraulic cylinder body, an end cover, a T-shaped piston, a separation block and a piston; the high-pressure diesel oil supply unit comprises a diesel oil tank, a first fuel oil filter, a high-pressure diesel oil pump, a first pressure stabilizing cavity, a pressure regulating valve, a two-position four-way electromagnetic valve, a first oil delivery pump and a second oil delivery pump; the low-pressure fatty acid methyl ester or ethyl ester supply unit comprises a fatty acid methyl ester or ethyl ester tank; the fatty acid methyl ester or ethyl ester box is provided with a second thermocouple heating rod, a filter layer and a first thermocouple heating rod; and the fatty acid methyl ester or ethyl ester in-cylinder direct injection unit comprises a second pressure stabilizing cavity and an in-cylinder direct injection oil injector. Oil supply pressure of fatty acid methyl ester or fatty acid ethyl ester is indirectly controlled through the high-pressure diesel oil supply unit, and continuous circulating supply of fatty acid methyl ester or fatty acid ethyl ester is achieved.

Description

technical field [0001] The invention belongs to the field of internal combustion engines, in particular to a fatty acid methyl or ethyl ester oil supply system with high melting point, poor fluidity and poor lubricity for internal combustion engines. Background technique [0002] With the increasing environmental pollution and energy shortage, the use of renewable energy that can realize efficient and clean combustion of internal combustion engines has become one of the important topics. As a clean biofuel that can replace petrochemical diesel, biodiesel has good environmental characteristics and biodegradability, has broad development prospects, and is very beneficial to the combustion of internal combustion engines. [0003] From the perspective of chemical composition, biodiesel is mainly C12-C22 fatty acid methyl ester or ethyl ester, which can be produced by esterification reaction between animal and vegetable oils and short-chain alcohols (methanol, ethanol, etc.). Th...

AI Technical Summary

Problems solved by technology

These fatty acid methyl esters or ethyl esters have properties such as high melting point, poor fluidity, and poor lubricity. It is difficult to use the existing commercial fuel supply system to inject a combustible mixture into the cylinder of the internal combustion engine, which hinders the effect of fatty acid methyl esters or ethyl esters on the performance of the internal combustion engine. The smooth development of research work such as impact

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