Concentric pipe integration one-way valve heating device for crankcase ventilation system

Abstract

The invention discloses a concentric pipe integration one-way valve heating device for a crankcase ventilation system. The concentric pipe integration one-way valve heating device for the crankcase ventilation system comprises a one-way valve, a concentric pipe, a liquid inlet pipe, a liquid outlet pipe, an air inlet pipe connector, a crankcase ventilation pipe, an engine supercharger cooling liquid outlet pipe, a first embedded aluminum pipe and a second embedded aluminum pipe, wherein one end of the liquid inlet pipe and one end of the liquid outlet pipe are connected with the engine supercharger cooling liquid outlet pipe; one end of the liquid inlet pipe and the other end of the liquid outlet pipe are connected with the concentric pipe; one end of the crankcase ventilation pipe is connected with one end of the one-way valve through the first embedded aluminum pipe; the other end of the one-way valve is connected with the concentric pipe through the second embedded aluminum pipe; and the other end of the concentric pipe is connected with the air inlet pipe connector. According to the device, a high temperature characteristic and a high specific heat capacity heat-insulating characteristic of engine cooling liquid are utilized, so that the cooling liquid and a crankcase ventilation gas for convection heat exchange in the concentric pipe, the temperature of the crankcase ventilation gas is improved, and the occurrence of the phenomena of frost crystal and freeze on the inner surface of the one-way valve is prevented.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a heating device for a check valve integrated with a core tube for a crankcase ventilation system. Background technique [0002] At present, after a passenger car equipped with a turbocharged engine drives at high speed in an alpine environment, it slows down and stops in a very short period of time and parks the vehicle in a low-temperature environment for a long time. As the parking duration decreases gradually, the water vapor component in the gas in the high-load crankcase ventilation pipeline will cause energy loss due to the throttling effect at the one-way valve, and in the lower temperature inlet and outlet of the one-way valve. Water droplets precipitate on the surface, and form frost crystals under the continuous action of low temperature, and ice blocks block the one-way valve, thereby affecting the smoothness of the crankcase ventilation system, causing the pressur...

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Problems solved by technology

[0002] At present, after a passenger car equipped with a turbocharged engine drives at high speed in an alpine environment, it slows down and stops in a very short period of time and parks the vehicle in a low-temperature environment for a long time. As the parking duration decreases gradually, the water vapor component in the gas in the high-load crankcase ventilation pipeline will cause energy loss due to the throttling effect at the one-way valve, and in the lower temperature inlet and outlet of the one-way valve. Water droplets precipitate on the surface, and form frost crystals under the continuous action of low temperature, and ice blocks block the one-way valve, thereby affecting the smoothness of the crankcase ventilation system, causing the pressure in the crankcase to be too high, causing the oil dipstick to pop out and the sealing oil seal to leak Engine oil and other problems lead to the emission of crankcase pollutants into the atmosphere and cause environmental pollution, which cannot meet the requirements of the national emission regulations of "Light Vehicle Pollutant Emission Limits and Measurement Methods (China Phase VI)"

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