Double cylinder wind cooling diesel

Abstract

The invention relates to a diesel engine, in particular to a dual cylinder air-cooled diesel engine. The dual cylinder air-cooled diesel engine comprises an engine body, a cylinder sleeve, a crankshaft, a crankshaft box cover, an oil pump, an oil pump drive gear, a flying hammer and a flywheel, wherein the cylinder sleeve is embedded in the engine body, a plurality of protrusions are arranged on an external disk of the cylinder sleeve, the two ends of the crankshaft are respectively arranged on the engine body and the crankshaft box cover, two flying hammers are symmetrically arranged on a governor drive gear, a high pressure oil duct is arranged on the crankshaft box cover, and the flywheel is arranged on one end of the crankshaft, which is connected with the engine body. The dual cylinder air-cooled diesel engine is characterized in that a plurality of balance ridding unbalance holes are arranged on the upper portion of a hub of the flywheel, which corresponds to the turning direction of the crankshaft or a plurality of balance matching blocks are arranged on the lower portion of the hub of the flywheel, which corresponding to the turning direction. The dual cylinder air-cooled diesel engine increases the working efficiency of the diesel engine in general.

Description

technical field [0001] The invention relates to a diesel engine, in particular to a double-cylinder air-cooled diesel engine. Background technique [0002] The traditional two-cylinder air-cooled diesel engine vibrates a lot when it works, and it will be more obvious if the ground is slightly uneven, which seriously affects the working life of the diesel engine, and also affects the life of the terminal machine used with the diesel engine. [0003] The traditional two-cylinder air-cooled diesel engine usually adopts a split crankshaft support, which means that the crankshaft of the diesel engine is supported on the body and the crankcase cover respectively. In the existing diesel engine manufacturing with aluminum alloy body, the locking of the crankcase cover has always been a difficult problem to solve. The reason is that the strength of the aluminum alloy is poor. When the crankcase cover becomes loose, the oil leaks in the slightest, and the whole machine is scrapped in...

AI Technical Summary

Problems solved by technology

In the existing diesel engine manufacturing with aluminum alloy body, the locking of the crankcase cover has always been a difficult problem to solve. The reason is that the strength of the aluminum alloy is poor. When the crankcase cover becomes loose, oil leakage can occur in light cases, and the whole machine can be scrapped in severe cases.

[0004] The traditional two-cylinder air-cooled diesel engine lubrication system generally does not take measures to stabilize the high-pressure oil circuit. If the oil pressure is too high, it may cause accidents such as oil pipe rupture, and because the high-pressure oil in the traditional diesel engine lubrication system has not been precisely filtered and effectively Cooling will directly enter the lubricating part. If there are large particles of impurities or the viscosity of the oil is reduced due to excessive temperature, it may cause the failure of the lubricating part.

[0005] The traditional two-cylinder air-cooled diesel engine generally cuts the circular groove or the spiral groove on the outer surface of the cylinder liner. The joint area of ​​the circular groove or the spiral groove is small, and it is difficult to fill the bottom of the groove due to the large flow resistance of the aluminum liquid during casting, and the aluminum liquid When solidified, it is easy to cause defects such as porosity and pores, which will cause poor heat dissipation in the cylinder of the diesel engine and seriously affect the performance of the diesel engine.

[0006] The traditional two-cylinder air-cooled diesel engine generally cuts the circular groove or the spiral groove on the outer surface of the cylinder liner. The joint area of ​​the circular groove or the spiral groove is small, and it is difficult to fill the bottom of the groove due to the large flow resistance of the aluminum liquid during casting, and the aluminum liquid When solidified, it is easy to cause defects such as porosity and pores, which will cause poor heat dissipation in the cylinder of the diesel engine and seriously affect the performance of the diesel engine.

[0007] When the traditional two-cylinder air-cooled diesel engine is working, the response of the mechanical governor is not sensitive enough, resulting in large speed fluctuations, high stable regulation rate, and long stable time. When used as the supporting power of the generator set, the frequency is unstable and affects the use effect.

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