CN210264939U

CN210264939U - Built-in PCV passageway's amalgamation formula cylinder cap

Info

Publication number: CN210264939U
Application number: CN201921479135.5U
Authority: CN
Inventors: 卢俊; 王志国; 潘丽莉; 施玉春; 马江涛; 胡志刚; 潘圣临; 曹权佐; 吴大千; 曲德鑫; 赵鹤宇; 刘金铸
Original assignee: Harbin Dongan Automotive Engine Manufacturing Co Ltd
Current assignee: Harbin Dongan Automotive Engine Manufacturing Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-04-07
Anticipated expiration: 2029-09-06

Abstract

The utility model provides a merge formula cylinder cap of built-in PCV passageway, belongs to engine cylinder cap technical field, the utility model discloses a solve the problem that does not have the cylinder cap that cooperatees and use with built-in PCV valve at present. The inside processing of cylinder cap main part outer wall has the PVC passageway, PVC's passageway one end is linked together through the PCV valve that is located the flange of cylinder cap main part side of admitting air and valve chamber shroud, the other end of PVC passageway divide into two branch road first passageway and second passageway, first passageway and second passageway are respectively with the first heavy hole and the second heavy hole intercommunication that go of cylinder cap main part flange face that admits air, first heavy hole that goes is located between a jar intake duct and the two jar intake ducts, the second goes heavy hole to be located between two jar intake ducts and the three jar intake ducts, first heavy hole and second go heavy hole to be passed through air intake manifold and combustion chamber intercommunication respectively. The utility model discloses a built-in PCV passageway's amalgamation formula cylinder cap can remove the external problem of bringing of PCV valve from, saves the part cost, easily processes when guaranteeing engine cylinder cap compact structure.

Description

Built-in PCV passageway's amalgamation formula cylinder cap

Technical Field

The utility model relates to a merge formula cylinder cap, concretely relates to merge formula cylinder cap of built-in PCV passageway belongs to engine cylinder lid technical field.

Background

With the continuous updating of the emission regulations of the engines, the emission requirements of the engines are more and more strict, according to the requirements, when the engine PCV valve is arranged outside (generally on an engine valve chamber cover), the original plug-in mounting structure of the PCV valve is changed into a thread mounting structure, and a special tool is required to be used during the disassembly, so that the effect that the PCV valve is not detachable is achieved, meanwhile, during the emission test of the engines, the reliability of the connection between the PCV valve and a PCV hose needs to be monitored, the part cost of the engine PCV valve is increased, the emission test items of the engines are also increased, if the PCV valve is arranged inside (generally integrated in the valve chamber cover), the changes can be omitted, the parts such as the PCV valve hose are reduced, and the PCV valve does not need to be monitored during the emission test.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a merge formula cylinder cap of built-in PCV passageway to solve the problem that does not have the cylinder cap that cooperatees and use with built-in PCV valve at present.

The utility model provides a combination formula cylinder cap of built-in PCV passageway includes the cylinder cap main part, the inside PVC passageway that has processed of cylinder cap main part outer wall, PVC's passageway one end is linked together through the flange that is located cylinder cap main part side of admitting air and the PCV valve in the valve chamber shroud, the other end of PVC passageway divide into two branch road first passageway and second passageway, first passageway and second passageway communicate with the first heavy hole and the second of cylinder cap main part flange face that deadweight respectively, first heavy hole that deadweight is located between first jar intake duct and the two jar intake ducts, the second is got heavy the hole and is located between two jar intake ducts and the three jar intake ducts, first heavy hole and second are got heavy the hole and are communicated with the combustion chamber through air intake manifold respectively.

Preferably: the flange is a flange surface processed on the end surface of the air inlet side of the cylinder cover main body, and the flange surface is matched with the valve chamber cover.

The utility model discloses compare with current product and have following effect:

the reverse V-shaped PCV passage is designed on the air inlet side of the cylinder cover, so that the mixed gas which is blowby from the crankcase returns to the combustion chamber again for combustion through the PCV passage on the cylinder cover after oil-gas separation of the valve chamber cover, the problem caused by the external arrangement of the PCV valve is avoided, an external PCV valve hose does not need to be additionally installed, the part cost is saved, and the engine cylinder cover is easy to process while the compact structure is ensured.

Drawings

FIG. 1 is a schematic structural diagram of a merged cylinder head with built-in PCV passages;

fig. 2 is a schematic structural view of an intake flange surface of the cylinder head main body.

In the figure: 1-a first channel, 2-a second channel, 3-a first weight-removing hole, 4-a second weight-removing hole, 5-a cylinder air inlet, 6-a cylinder air inlet, 7-a three cylinder air inlet and 11-a flange.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, a combination formula cylinder cap of built-in PCV passageway include the cylinder cap main part, the inside processing of cylinder cap main part outer wall has the PVC passageway, PVC's passageway one end is linked together through the flange 11 that is located cylinder cap main part side of admitting air and the PCV valve in the valve chamber shroud, the other end of PVC passageway is divided into two branch road first passageway 1 and second passageway 2, first passageway 1 and second passageway 2 communicate with first duplication hole 3 and the second duplication hole 4 of cylinder cap main part flange face respectively, first duplication hole 3 is located between one jar intake duct 5 and two jar intake ducts 6, second duplication hole 4 is located between two jar intake ducts 6 and three jar intake ducts 7, first duplication hole 3 and second duplication hole 4 communicate with the combustion chamber through air intake manifold respectively.

First heavy hole 3, second heavy hole 4, one jar intake duct 5, two jar intake ducts 6 and three jar intake ducts 7 are arranged in proper order on cylinder cap main part flange face that admits air from left to right, and first heavy hole 3, second heavy hole 4, one jar intake duct 5, two jar intake ducts 6 and three jar intake ducts 7 are the passageway of processing in the cylinder cap main part.

Further: the flange 11 is a flange surface processed on the end surface of the air inlet side of the cylinder cover main body, and the flange surface is matched with the valve chamber cover.

The working principle is as follows: the PCV valve is arranged in the valve chamber cover of the engine, when mixed gas flees to a crankcase through a gap between a piston and a cylinder wall, the mixed gas enters the valve chamber cover through a cylinder cover gas fleeing hole, after the valve chamber cover is subjected to separation treatment of engine oil and the mixed gas, the PCV valve is opened when certain pressure is reached, the mixed gas after oil-gas separation enters a cylinder cover PCV passage through a passage in the valve chamber cover, the PCV passage is inverted V-shaped, the mixed gas is respectively sent to the deduplication holes of the intake flange surfaces of the two cylinder covers, and the mixed gas returns to a combustion chamber through an opening passage on an intake manifold for combustion.

This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.

Claims

1. The utility model provides a combination formula cylinder cap of built-in PCV passageway, includes the cylinder cap main part, its characterized in that: the inside processing of cylinder cap main part outer wall has the PVC passageway, the passageway one end of PVC is linked together through flange (11) that are located cylinder cap main part side of admitting air and the PCV valve in the valve chamber shroud, the other end of PVC passageway divide into two branch road first passageway (1) and second passageway (2), first passageway (1) and second passageway (2) are respectively with first heavy hole (3) and second heavy hole (4) intercommunication that go of cylinder cap main part flange face, first heavy hole (3) are located between one jar intake duct (5) and two jar intake ducts (6), second heavy hole (4) are located between two jar intake ducts (6) and three jar intake ducts (7), first heavy hole (3) and second heavy hole (4) are respectively through air intake manifold and combustion chamber intercommunication.

2. The merged cylinder head with built-in PCV passage of claim 1, wherein: the flange (11) is a flange surface processed on the end surface of the air inlet side of the cylinder cover main body, and the flange surface is matched with the valve chamber cover.