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Compound engine crankcase ventilation device

A crankcase ventilation and engine technology, which is applied in crankcase ventilation, engine components, machines/engines, etc., can solve the problems of large space occupation and insufficient short-distance labyrinth effect, and achieve the goals of reducing fuel consumption, simple structure, and reducing pollution Effect

Inactive Publication Date: 2012-10-17
东风朝阳朝柴动力有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this form is still that it takes up a lot of space, and the short-distance maze effect is not obvious enough

Method used

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  • Compound engine crankcase ventilation device
  • Compound engine crankcase ventilation device

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Embodiment Construction

[0010] The principle and structure of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0011] The composite engine crankcase ventilation device has the structure that the filter screen 1 is placed in the respirator socket 2, and the respirator socket is fixed to the respirator inner cover 4 through the connecting flange 3 to form the first stage oil filter chamber. An intermediate baffle 5 is arranged between the respirator inner cover and the respirator outer cover 6, and the respirator inner cover, the intermediate baffle, and the respirator outer cover form the second-stage oil filter chamber. The separation of oil and gas is completed through two-stage filtration. An oil return pipe 7 is arranged at the lower end of the cavity formed by the respirator inner cover and the intermediate baffle, and an air outlet pipe 8 is arranged at the upper end of the cavity formed by the intermediate ba...

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Abstract

The invention discloses a compound engine crankcase ventilation device. A filter screen is arranged in a respirator joint seat; the respirator joint seat is fixed on a respirator inner cover through a connecting flange, so that a first-stage oil filtering cavity is formed; a middle baffle plate is arranged between the respirator inner cover and a respirator outer cover; a second-stage oil filtering cavity consists of the respirator inner cover, the middle baffle plate and the respirator outer cover; the filter screen and the joint seat construct a filtering cavity; and a maze type condensing cavity is formed by inner and outer shells and the baffle plate. Two types of respirators are combined skillfully, and a reasonable design is adopted, so that residual engine oil mist can be effectively filtered on the basis of ensuring pressure balance in a crankcase, oil consumption of lubricating oil is lowered, and the pollution on the atmospheric environment is lowered remarkably. Due to the adoption of the design, the requirement of pressure balance of an engine crankcase cavity under any load of the engine can be met, engine oil is prevented from flowing outwards, and the phenomenon of burning of lubricating oil is reduced remarkably. Moreover, the compound engine crankcase ventilation device has the characteristics of small size, simple structure and remarkable engine oil recovering effect.

Description

technical field [0001] The invention belongs to engine components, in particular to a device for ventilating the inside of a crankcase. Background technique [0002] During the working process of the diesel engine, some oil-steam mixed gas and exhaust gas will pass through the piston ring to the crankcase, which will increase the pressure in the crankcase and the rocker chamber, and the oil will seep from the crankshaft oil seal, crankcase liner, etc. out, causing oil seal leakage. At the same time, the oil in the rocker arm cover also enters the combustion chamber along the valve due to the pressure increase, increasing the discharge pressure and oil loss. [0003] In order to solve this problem, most diesel engines currently use filter-type ventilation devices. The mixed gas and oil vapor entering the crankcase are filtered and condensed by the filter, and flow back to the bottom of the crankcase along the slope of the crankcase shell. However, some (engine oil) oil mis...

Claims

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Application Information

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IPC IPC(8): F01M13/04
Inventor 张洪成吴广仓杨洪生霍达
Owner 东风朝阳朝柴动力有限公司
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