CN210829437U

CN210829437U - Crankcase ventilation heater integrated with one-way valve

Info

Publication number: CN210829437U
Application number: CN201921446335.0U
Authority: CN
Inventors: 冷凯; 陈燕迪; 郭晓强; 付杨
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-06-23
Anticipated expiration: 2029-09-02

Abstract

The utility model relates to a crankcase ventilation heater of integrated check valve, including big load path check valve and crankcase ventilation heater, big load path check valve include casing and check valve diaphragm, the check valve diaphragm install in the casing, casing and crankcase ventilation heater shell intercommunication and fixed connection as an organic whole, crankcase ventilation heater include heat pipe, electrode, PTC heating plate and electrically conductive pressure spring, the heat pipe shell paste and tightly have the PTC heating plate, electrically conductive pressure spring both ends support respectively and lean on PTC heating plate and crankcase ventilation heater shell to be connected with the electrode. The method has the advantages of low cost, high reliability, high integration degree and the like.

Description

Crankcase ventilation heater integrated with one-way valve

Technical Field

The utility model belongs to crankcase ventilation heater field, concretely relates to crankcase ventilation heater of integrated check valve.

Background

The crankcase ventilation heater is designed, and is a device for heating the crankcase gas by a PTC heating sheet. The modified vehicle type requirement of the vehicle type meets the national six-emission regulation (GB 18352.6) requirement of light vehicles, and the J.4.9.2.2 requirement in the regulation: except for the case specified by j.4.9.2.3, the OBD system should detect a fault if the crankcase is disconnected from the PCV valve, or the PCV valve is disconnected from the intake manifold. Also mentioned in item J.4.9.2.5 are: the production facility may not detect a disconnection fault between the PCV valve and the intake manifold in the following cases: (1) the vehicle immediately stalls when idling; (2) the PCV system is an integral part of the intake system and therefore the connection between the valves and the intake manifold is not normally broken (e.g., by machined passages rather than by piping or hoses).

For a turbocharged engine, a PCV system is divided into a small load path and a large load path after coming out of an oil-gas separator, one path of the small load path is provided with a one-way valve (airflow flows into an air inlet manifold in a one-way mode) and then is connected to the air inlet manifold, after any section of pipeline in front of and behind the one-way valve is disconnected, the air inlet manifold is equivalently communicated with the atmosphere directly, the engine can judge the change of air pressure through a sensor of the engine, and then flameout is carried out, so that the purpose of detection is. A one-way valve (airflow flows into the air inlet pipe in one way) is also arranged on one way of the heavy load and then connected to the air inlet pipe before turbocharging.

At present, a diagnosis circuit needs to be integrated on a heavy-load pipeline for monitoring the pipeline, when the pipeline is disconnected, the diagnosis circuit is also disconnected at the same time, software and hardware need to be newly added in the scheme, and the cost of the whole vehicle is increased.

Disclosure of Invention

The utility model aims at providing an integrated check valve's crankcase ventilation heater has advantages such as with low costs, the reliability is high and the integration level is high.

The purpose of the utility model is realized by adopting the following technical scheme:

the utility model provides an integrated check valve's crankcase ventilation heater, includes big load way check valve and crankcase ventilation heater, big load way check valve include casing 2 and check valve diaphragm 1, check valve diaphragm 1 install in casing 2, casing 2 and crankcase ventilation heater shell 3 intercommunication and fixed connection as an organic whole, crankcase ventilation heater include heat pipe 4, electrode 5, PTC heating plate 6 and electrically conductive hold-down spring 7, heat pipe 4 shell paste closely PTC heating plate 6, electrically conductive hold-down spring 7 both ends support respectively and lean on PTC heating plate 6 and crankcase ventilation heater shell 3 to be connected with electrode 5.

As a more excellent technical solution of the utility model: the crankcase ventilation heater further comprises a conductive gasket, and the conductive gasket is arranged between the PTC heating sheet 6 and the conductive compression spring 7.

The beneficial effects are as follows:

the utility model provides a crankcase ventilation heater of integrated check valve removes big load way check valve to the rear end, and is integrated with crankcase ventilation heater, and big load way pipeline disconnection also is equivalent to the direct intercommunication atmosphere of air intake manifold, and is the same with little load way, can judge out the change of atmospheric pressure by the sensor of engine self, and then flame-out to reach the purpose of monitoring, because above-mentioned structure the utility model discloses a purpose such as with low costs, the reliability is high, the integrated level is high.

Drawings

FIG. 1 is a schematic structural view (without a housing) of the check valve integrated crankcase ventilation heater of the present invention;

fig. 2 is a schematic structural view of the check valve integrated crankcase ventilation heater of the present invention.

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings:

as shown in fig. 1-2, the utility model provides an integrated check valve's crankcase ventilation heater, including big load way check valve and crankcase ventilation heater, big load way check valve include casing 2 and check valve diaphragm 1, check valve diaphragm 1 install in casing 2, casing 2 and crankcase ventilation heater shell 3 intercommunication and fixed connection as an organic whole, crankcase ventilation heater include heat pipe 4, electrode 5, PTC heating plate 6 and electrically conductive pressure spring 7, heat pipe 4 shell paste and tightly have PTC heating plate 6, electrically conductive pressure spring 7 both ends support respectively and lean on PTC heating plate 6 and crankcase ventilation heater shell 3 to be connected with electrode 5. The crankcase ventilation heater further comprises a conductive gasket, and the conductive gasket is arranged between the PTC heating sheet 6 and the conductive compression spring 7.

The small load of crankcase ventilation system pipeline is equipped with a check valve on one way, and the air current one-way inflow intake manifold then is connected to intake manifold, behind the disconnection of arbitrary section pipeline around the check valve, all is equivalent to intake manifold direct intercommunication atmosphere, and the engine can judge the change of atmospheric pressure through the sensor of self, and then flame-out to reach the mesh that detects. Big load is equipped with a check valve diaphragm 1 all the way, then is connected to the intake pipe before turbo-charging, big load way check valve include casing 2 and check valve diaphragm 1, check valve diaphragm 1 install in casing 2, casing 2 and crankcase ventilation heater shell 3 intercommunication and fixed connection as an organic whole, check valve and crankcase ventilation heater integration, big load way pipeline disconnection also is equivalent to the air manifold direct intercommunication atmosphere, and is the same with little load way, can judge the change of atmospheric pressure by the sensor of engine self, and then flame-out to reach the mesh of monitoring.

The above examples are merely illustrative for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And obvious changes and modifications may be made without departing from the scope of the present invention.

Claims

1. A crankcase ventilation heater integrated with a check valve is characterized in that: including big load path check valve and crankcase ventilation heater, big load path check valve include casing (2) and check valve diaphragm (1), check valve diaphragm (1) install in casing (2), casing (2) and crankcase ventilation heater shell (3) intercommunication and fixed connection as an organic whole, crankcase ventilation heater include heat pipe (4), electrode (5), PTC heating plate (6) and electrically conductive pressure spring (7), heat pipe (4) shell paste and tightly have PTC heating plate (6), electrically conductive pressure spring (7) both ends support respectively and lean on PTC heating plate (6) and crankcase ventilation heater shell (3) to be connected with electrode (5).

2. A check valve integrated crankcase ventilation heater as claimed in claim 1 wherein: the crankcase ventilation heater also comprises a conductive gasket, and the conductive gasket is arranged between the PTC heating sheet (6) and the conductive compression spring (7).