CN101994616A

CN101994616A - PCV system integral intake manifold

Info

Publication number: CN101994616A
Application number: CN2009101780550A
Authority: CN
Inventors: 李振镐
Original assignee: GM Global Technology Operations LLC
Current assignee: GM Global Technology Operations LLC
Priority date: 2009-08-20
Filing date: 2009-09-28
Publication date: 2011-03-30
Also published as: KR20110019612A

Abstract

Disclosed herein is a positive crankcase ventilation (PCV) system integral intake manifold, including a plurality of intake manifold passages, which are integrated with one side of an intake manifold air collection chamber in one, and the intake manifold passages are used for communicating with corresponding intake ports of a cylinder cover of an engine. The PCV system integral intake manifold includes: a chamber, which is integrated with the plurality of intake manifold passages; PCV intake ports, arranged on one side of the chamber and communicated with the chamber; and a plurality of holes, formed in the chamber. The plurality of holes are arranged in positions corresponding to the plurality of intake manifold passages.

Description

PCV system intergration formula intake manifold

Technical field

Generally, the present invention relates to a kind of intake manifold that is used for internal-combustion engine, more particularly, the present invention relates to a kind of positive crankcase ventilation (PCV) (PCV) system intergration formula intake manifold (PCVsystem-integrated intake manifold), described PCV system intergration formula intake manifold is provided with a plurality of and the PCV system intergration (integration) is the intake manifold passage of one.

Background technique

Intake manifold is supplied to cylinder with fuel air mixture, and intake manifold is the part of motor.The main effect of this intake manifold is that fuel air mixture (or the air in the direct injection engine) is evenly distributed in the corresponding suction port of cylinder head.This uniform distribution is an important factors for efficient and the performance of optimizing motor.

Throttle valve body is controlled the flow rate that enters into the air of motor via suction tude in response to driver's input (for example by the caused input of the accelerator pedal that presses down vehicle), and throttle valve body is the part of gas handling system.In addition, throttle valve body is arranged between air filtering box and the intake manifold usually, and air enters into intake manifold collection chamber (intake manifold plenum) via throttle valve body.Under the situation of high speed, high capacity, in the process of powered vehicle, the baffle plate of throttle valve body (flap) can be opened very large angle, thereby makes enough a large amount of air enter into the intake manifold collection chamber.On the contrary, under the situation of low speed, low load, in the process of powered vehicle, the baffle plate of throttle valve body can be opened very little angle, thereby does not make the air of capacity enter into the intake manifold collection chamber.

The intake manifold collection chamber is connected in throttle valve body, and is used to store from what throttle valve body entered and enters air (intake air) and described air is sent to a plurality of intake manifold passages (runner).

Described a plurality of intake manifold passage is connected in a side of intake manifold collection chamber, and is used as a plurality of streams that are communicated with the corresponding suction port of engine cylinder cap.Generally speaking, described passage typically is designed to optimize the performance of internal-combustion engine under its specific speed.

Simultaneously, the air that enters from the outside flows in the following order:

Suction tude → throttle valve body → intake manifold → firing chamber → gas exhaust manifold

The waste gas that produces by power stroke in the firing chamber does not all discharge by gas exhaust manifold, but has some waste gas to enter into crankcase with the gas blowby form.When this gas blowby remained in the motor, the inside of motor became and easily is corroded.Thus, motor generally is provided with the PCV system, and described PCV system makes gas blowby be circulated again into the air inlet side, thus gas blowby is supplied to the firing chamber.

Though usually adopt the method that makes the gas blowby that enters from the PCV mouth of PCV system enter into the intake manifold collection chamber in the past, the problem of this method is that gas blowby is not fed into each cylinder equably temporarily.

Thus, in order to address this problem, adopt so independent PCV system, it is told arm (branched) in corresponding intake manifold passage and be configured to make gas blowby to be supplied with equably.

Yet, because this independent PCV system need with the parts of intake manifold channel separation, so the problem of this independent PCV system be because this separated components, increased manufacture cost and reduced the manufacturing efficient of manufacture process.

In addition,, described separating component needs the space, so produced the problem that is difficult to effectively utilize the vehicle inside space because being installed.In addition, also another problem of Chan Shenging is, owing to this separated components causes being difficult to reduce vehicle weight.

Summary of the invention

Thus, consider the problems referred to above of the prior art and propose the present invention; And the object of the present invention is to provide a kind of PCV system intergration formula intake manifold, wherein, single PCV system and a plurality of intake manifold passage integrate, thereby need not separated components, can reduce the manufacture cost of product thus and improve the manufacturing efficient of product.

Another object of the present invention is to provide a kind of PCV system intergration formula intake manifold, and it can improve the use of inner space.

To achieve these goals, the invention provides a kind of PCV system intergration formula intake manifold, it is provided with a plurality of intake manifold passages, one side of described intake manifold passage and intake manifold collection chamber integrates, and described intake manifold passage is used as the stream that is communicated with the corresponding suction port of engine cylinder cap, described PCV system intergration formula intake manifold comprises: chamber, and itself and described a plurality of intake manifold passage integrate; The PCV suction port, it is arranged in the side of described chamber and is configured to be connected with described chamber; And a plurality of holes, it is formed in the described chamber, and is formed on and the corresponding position of described a plurality of intake manifold passages.

Gas blowby can be supplied to from described PCV suction port.

Described chamber can be divided into upper chamber and lower chambers, and is formed with described a plurality of hole in described lower chambers.

Described lower chambers is provided with near the part the side of described PCV suction port at described chamber the comparable described lower chambers in zone (aear) remains near the regional wide of the part side of (remaining) at described chamber.

Description of drawings

From detailed description below in conjunction with accompanying drawing, will more be expressly understood above and other objects of the present invention, feature and advantage, in the accompanying drawings:

Fig. 1 is the partial perspective view according to the right side of the PCV system intergration formula intake manifold of embodiment of the present invention;

Fig. 2 is the partial perspective view according to the front portion of the PCV system intergration formula intake manifold of embodiment of the present invention;

Fig. 3 is the sectional view according to the PCV system intergration formula intake manifold of embodiment of the present invention; And

Fig. 4 is the stereogram that cuts out along the Y-Y line according to the PCV system intergration formula intake manifold of embodiment of the present invention.

Embodiment

Describe referring now to accompanying drawing, wherein, in different accompanying drawings, all adopt identical reference character to represent same or analogous parts.

PCV system intergration formula intake manifold according to the preferred embodiment for the present invention is described below with reference to accompanying drawings.In this manual, in order to know and be convenient to explanation that lines thickness in the accompanying drawing or part dimension are illustrated by exaggerative.In addition, following term is a defined term in the function of the context of the invention, and following term can have according to user or operator's intention or convention and the implication that changes.Therefore, the qualification of described term should make an explanation in the context of whole specification.

Fig. 1 is the partial perspective view according to the right side of PCV system intergration formula intake manifold 100 of the present invention.Fig. 2 is the partial perspective view according to the front portion of PCV system intergration formula intake manifold 100 of the present invention.

The PCV system intergration formula intake manifold 100 of present embodiment shown in Figure 1 comprises: intake manifold collection chamber (not shown), a plurality of intake manifold path 10, chamber 20 and PCV suction port 30.Though operate required various types of parts operated by rotary motion in the PCV of foundation present embodiment system intergration formula intake manifold 100, will omit general remark to them at this.

Described a plurality of intake manifold path 10 is connected in a side of described intake manifold collection chamber integratedly, and is used as a plurality of streams that are communicated with the corresponding suction port of engine cylinder cap.It should be noted that although exist four intake manifold path 10s in the present embodiment, the quantity of intake manifold path 10 can be according to the configuration situation of vehicle motor, internal environment etc. and changed.

Chamber 20 integrates with the intake manifold path 10.Separating component is being installed to construct the preferred integral installation chamber 20 in position of traditional single PCV system.Yet,, just need not specifically limit the mounting point of chamber 20 as long as chamber 20 integrates with the intake manifold path 10.

PCV suction port 30 is installed in a side of chamber 20, and is communicated with chamber 20.PCV suction port 30 is the member of PCV system, and PCV suction port 30 roles are that gas blowby is entered in the chamber 20, by making gas blowby be recycled to the air inlet side gas blowby is supplied to the firing chamber.

Fig. 3 is the sectional view according to the PCV system intergration formula intake manifold of present embodiment, and Fig. 4 is the stereogram that cuts out along the Y-Y line according to the PCV system intergration formula intake manifold of present embodiment.

In the chamber 20 that integrates with the intake manifold path 10, be formed with a plurality of holes 40.Described a plurality of hole 40 is formed in the surface, and chamber 20 and intake manifold path 10 contact with each other by this surface, and described a plurality of hole 40 is formed on and the corresponding position of described a plurality of intake manifold path 10s.It should be noted that although have four holes 40 in this embodiment, the quantity in hole 40 can change according to the quantity of intake manifold path 10.

Simultaneously, chamber 20 is divided into upper chamber 21 and lower chambers 22, and described a plurality of hole 40 only is formed in the lower chambers 22.Thus, it should be noted that the gas except gas blowby can enter into upper chamber 21.

Simultaneously, lower chambers 22 is designed to: near the zone of the part of lower chambers 22 side that PCV suction port 30 is set of chamber 20 is regional wideer than near the part of lower chambers 22 another side of chamber 20.For example, the area of lower chambers 22 (area) can reduce gradually near the position the described another side of chamber 20 is played near the position the described side that PCV suction port 30 is set of chamber 20.

By this configuration, the gas blowby that enters in the chamber 20 via PCV suction port 30 can enter into the intake manifold path 10 equably.In addition, when the single PCV of manufacturing system, chamber 20 integrates with the intake manifold path 10, thereby need not separated components, has reduced whole manufacture cost thus.In addition, when the single PCV of manufacturing system, do not adopt separated components and do not need extra installing space, thereby can further improve use inner space.

According to the present invention, described single PCV system and described a plurality of intake manifold passage integrate, thereby need not separated components when the single PCV of manufacturing system, and the result who brings simultaneously has the advantage that reduces manufacture cost.

In addition, according to the present invention, described single PCV system and described a plurality of intake manifold passage integrate, thereby need not separated components when the single PCV of manufacturing system, and the result who brings simultaneously has to improve the advantage that inner space is used.

Although disclosed preferred implementation of the present invention for exemplary purposes, but those of ordinary skill in the art will recognize, under the situation that does not break away from the scope and spirit of the present invention disclosed in the appended claims, can carry out various modifications, increase and alternative.

Claims

1. PCV system intergration formula intake manifold, it is provided with a plurality of intake manifold passages, one side of described intake manifold passage and intake manifold collection chamber integrates, and described intake manifold passage is used as the stream that is connected with the corresponding suction port of engine cylinder cap, and described PCV system intergration formula intake manifold comprises:

Chamber, itself and described a plurality of intake manifold passage integrate;

The PCV suction port, it is arranged in the side of described chamber and is configured to be connected with described chamber; And

A plurality of holes, it is formed in the described chamber, and is formed on and the corresponding position of described a plurality of intake manifold passages.

2. PCV system intergration formula intake manifold as claimed in claim 1 wherein, is supplied with gas blowby from described PCV suction port.

3. PCV system intergration formula intake manifold as claimed in claim 1 or 2, wherein, described chamber is divided into upper chamber and lower chambers, and described a plurality of holes are formed in the described lower chambers.

4. PCV system intergration formula intake manifold as claimed in claim 3, wherein, described lower chambers zone that near the part the side of described PCV suction port is set at described chamber regional wide than near the part of the described lower chambers remaining side of described chamber.