Low oil consumption type engine crankcase and engine set

Abstract

The invention discloses a low oil consumption type engine crankcase and engine set comprising a crankcase and a cylinder head. An inner cavity of the crankcase is communicated with a rocker arm compartment at the upper end of the cylinder head through an air passage, the inner cavity is provided with an engine oil baffle used for blocking splashing engine oil from entering the air passage, and the baffle inclines from the air passage to an engine oil storage chamber. Since the engine oil baffle is added, splashing liquid engine oil can be effectively blocked from entering the air passage and entering the rocker arm chamber through the air passage while engine oil splash lubrication is unaffected, and further unnecessary consumption of the engine oil is reduced; besides, the liquid engine oil can be prevented from accumulating in the air passage to affect delivery of fresh air, and the requirements on conversion reaction in a silencer are met; the low oil consumption type engine crankcase and engine set is simple in structure and has positive practical significance to improvement of effective utilization of the engine oil and reduction of use cost.

Description

[0001] technical field [0002] The invention relates to a power machine component and its application, in particular to an engine component and its application. [0003] Background technique [0004] An engine is a machine that can convert other forms of energy into mechanical energy, and is composed of a cylinder, a crank linkage, a gas distribution system, an oil supply system, a lubrication system, and an ignition system. General-purpose engines refer to reciprocating piston engines that are widely used in addition to vehicles and aviation. The general power is less than 20kW. General-purpose engines are characterized by simple structure, easy operation, and low cost. They are mainly used for agricultural and forestry plant protection machinery, garden machinery, small machinery, generator sets, construction machinery, fire-fighting series machinery, recreational karts, water power and aviation model power, etc. [0005] Near the cylinder of some engines, there is an a...

AI Technical Summary

Problems solved by technology

Due to the increase of the air passage between the inner cavity of the crankcase and the rocker chamber, when the engine is working, due to the high-speed rotation of the connecting rod and crankshaft, the splashing oil will lubricate the moving parts, and part of the oil will pass through the air passage on the box. The accumulation of liquid oil in the air passage affects the delivery of fresh air, which is not conducive to the conversion reaction in the muffler. The oil vapor enters the rocker chamber through the air passage and will form too much oil vapor. These oil vapors pass through the cylinder head cover. The breather pipe connected with the air filter enters the air filter, and then enters the combustion chamber through the carburetor to burn and consume

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