Device for preventing icing blockage of ventilation pipeline and automobile engine

Abstract

The invention provides a device for preventing icing blockage of a ventilation pipeline and an automobile engine, and relates to the technical field of automobiles. The device for preventing icing blockage of the ventilation pipeline comprises an thermal expansion and cold shrinkage mechanism, a heating and heat preservation circuit and a heating and heat preservation layer, wherein the thermal expansion and cold shrinkage mechanism and the heating and heat preservation layer are both connected with the heating and heat preservation circuit, the heating and heat preservation layer is used forwrapping the outer side of the crankcase ventilation pipeline, the expansion and the shrinkage of the thermal expansion and cold shrinkage mechanism can control disconnection and connection of the heating and heat preservation circuit so that the crankcase ventilation pipeline can be heated when the heating and heat preservation circuit is connected. The automobile engine comprises the device forpreventing icing blockage of the ventilation pipeline. According to the device and the automobile engine, the technical problems that in the prior art, aging of the crankcase ventilation pipeline is likely to be accelerated, the structure is complex and the control is complex are solved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a device for preventing freezing and blocking of a ventilation pipeline and an automobile engine. Background technique [0002] In order to meet the requirements of national emission regulations and improve economy, modern automobile engines adopt a forced crankcase ventilation design. This system uses the suction function of the intake system to suck engine blow-by gas, which is conducive to improving engine economy and reducing environmental pollution. Pollution. However, in low-temperature environment, especially in high-cold environment, if the crankcase ventilation pipeline has no insulation or heating layer, the water vapor in the pipeline may condense and form ice flowers attached to the inner wall of the curved pipeline. The pipeline is completely blocked, resulting in the failure of the forced crankcase ventilation system, causing the crankshaft pressure to rise, an...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a device for preventing freezing and blocking of ventilation pipelines, so as to solve the technical problems in the prior art that are easy to accelerate the aging of curved pipelines, complex structure and complicated control

[0006] The purpose of the present invention is also to provide an automobile engine, which includes the above-mentioned anti-freezing and clogging device for ventilation pipelines, which is used to solve the problems in the prior art that are easy to accelerate the aging of curved pipelines, complicated structure and complicated control. technical issues

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