CN101113697A

CN101113697A - Car engine camshaft bearing cap

Info

Publication number: CN101113697A
Application number: CNA2007101455451A
Authority: CN
Inventors: 慕金华
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2007-08-28
Filing date: 2007-08-28
Publication date: 2008-01-30
Anticipated expiration: 2027-08-28
Also published as: CN100532814C

Abstract

The invention provides a cam shaft bearing cover of auto engines, comprising a first cam shaft bearing cover and a plurality of second cam shaft bearing covers. The first cam shaft bearing cover and the second cam shaft bearing covers are positioned on an engine cylinder cover, thus forming a shaft diameter hole of a cam shaft. A petrol tunnel communicated with an intake VVT phaser and an intake cam shaft and an exhaust cam shaft is cast on a matching surface of the first cam shaft bearing cover and the cylinder cover. Grease from a cylinder body enters from the petrol hole of the cylinder cover and then is divided into two ways, one flows into the intake cam shaft and the exhaust cam shaft along the petrol tunnel and then flows directly to shaft diameter parts of a plurality of cam shaft bearing covers to grease the cam shaft bearing cover, while the other way flows into the intake VVT phaser along the petrol tunnel. The cam shaft bearing cover of auto engines of the invention has simple cast technique, compact structure, and dramatically reduces occupying space of the cylinder cover on the whole engine and the weight on the whole engine weight.

Description

Car engine camshaft bearing cap

Technical field

The present invention relates to be used for the camshaft-bearing cap of high speed car motor.

Background technique

Now the domestic automobile engine cam is that framework by an integral body is installed in above the cylinder cap at fixing on the cylinder cap mostly, finish by some bolt, be cast with camshaft bearing hole on the framework with the cylinder cap correspondence, each diameter of axle fuel feeding hole of all will on cylinder cap, buying oil, the framework volume is big, increased the volumetric spaces of motor, and the oilhole processing technology complexity on the cylinder cap.

Summary of the invention

The object of the invention is to provide a kind of car engine camshaft bearing cap structure, make the corresponding bearing cap of every section diameter of axle of camshaft, be cast with on first camshaft-bearing cap towards the oil circuit of camshaft and air inlet VVT, casting technique is simple, compact structure has reduced space and complete machine weight that cylinder head is occupied greatly on whole motor.

The present invention realizes by the following technical solutions.

A kind of car engine camshaft bearing cap comprises: first camshaft-bearing cap and a plurality of second camshaft-bearing cap.First camshaft-bearing cap and a plurality of second camshaft-bearing cap are installed in engine cylinder and cover, and form the diameter of axle hole of camshaft together.

Be cast with on the fitting surface of first camshaft-bearing cap and cylinder cap towards the oil groove of air inlet VVT phase discriminator, enter from the lubricant oil of cylinder block oilhole from cylinder cap, be divided into two-way then, oil from the first via inserts from first access point, flow to along the oil groove direction in the oil circuit of admission cam shaft, flow to the VVT phase discriminator then; Oil from the second tunnel is inserted by second access point, leads in the oil circuit of admission cam shaft first diameter of axle along second oil groove then, leads in the oil circuit of exhaust cam shaft first diameter of axle along the 3rd oil groove.Wherein first access point is two, near the head of first camshaft-bearing cap, first diameter of axle; Second access point is positioned at the middle part of first camshaft bearing lid, connects the second and the 3rd oil groove.

First camshaft-bearing cap arrives with the cylinder cap positioning combination by two setting sleeves that are installed on the cylinder cap; Second camshaft-bearing cap has guaranteed the coaxality of camshaft bearing by holding down bolt and cylinder cap positioning combination together.The end of first camshaft-bearing cap (d, e) portion is to the axial location of plaing a part of camshaft.

By above-mentioned technological scheme, provide a kind of structure that can be air inlet VVT fuel feeding.This structure can reduce the volumetric spaces of motor, and weight reduction reduces the mechanical processing technique difficulty, saves cost.

Concrete advantage and intention are summarized as follows:

In above-mentioned technological scheme, with the integrated and one of oil leab structure of oil supply structure and the camshaft of VVT, can reduce the volumetric spaces of motor, weight reduction reduces the mechanical processing technique difficulty, saves cost.Oil groove forms by casting, and compact structure satisfying the high performance while of motor, has been simplified technology; And clutch shaft bearing lid both ends of the surface can play the accurate in locating effect to camshaft.This lightweight construction has been saved cost of material, improves the cost performance of motor greatly.

Description of drawings

Fig. 1 is a car engine camshaft bearing cap schematic representation of the present invention;

Fig. 2 is installed in the schematic representation that engine cylinder covers for car engine camshaft bearing cap of the present invention;

Wherein A-A is the sectional drawing that admission cam shaft 6 is positioned at the first camshaft bearing cover; B-B is the sectional drawing that exhaust cam shaft 5 is positioned at the first camshaft bearing cover, and M-M is that second to the N camshaft-bearing cap cooperates the sectional drawing after installing with cylinder cap;

Fig. 3 is motor car engine cylinder head of the present invention and clutch shaft bearing lid combination oil circuit figure.

Description of symbols among the figure:

1-first camshaft cover; 2-second to the N camshaft cover; The 3-holding down bolt; The 4-setting sleeve; The 5-exhaust cam shaft; The 6-admission cam shaft; The 7-cylinder cap; The 8-VVT phase discriminator

A-leads to the oil groove of air inlet VVT; B-leads to the oil groove of admission cam shaft; C-leads to the oil groove of exhaust cam shaft; D-admission cam shaft thrust surface; E-exhaust cam shaft thrust surface; The f-positioning bolt hole; B1, b2, b3-and cylinder cap mounting hole;

Embodiment

Below in conjunction with accompanying drawing, car engine camshaft bearing cap of the present invention is described in further detail.

With reference to Fig. 1,3, car engine camshaft bearing cap of the present invention is disclosed, comprise first camshaft-bearing cap, 1, the second to N camshaft-bearing cap 2, promptly identical with second camshaft-bearing cap structure bearing cap is a plurality of.First camshaft-bearing cap 1 and a plurality of second camshaft-bearing cap Fig. 2 are installed on the engine cylinder cover 7, constitute diameter of axle hole φ 1, φ 2 and several φ N of

camshaft

5,6 together.First camshaft-bearing cap 1 is to combine the location by two setting sleeves 4 that are installed on the cylinder cap 7 with cylinder cap, and second to the N camshaft-bearing cap 2 combines the location by holding down bolt 3 with cylinder cap 7, has guaranteed the coaxality of camshaft hole.The effect of location is played by the end d of first camshaft-bearing cap and e portion to the axial float of camshaft.

As Fig. 2, shown in 3, in the time of engine operation, enter from the lubricant oil of cylinder block h oilhole from cylinder cap 7, be divided into two-way h1 and h2 then, be cast with oil groove a on the fitting surface of first camshaft-bearing cap 1 and cylinder cap 7 towards the VVT phase discriminator, oily h21 from cylinder cap h2 main oil gallery, h22 is respectively from 00,01 two accesses, promptly from the oil of h21 by 00 access, flow to the I4 (see figure 2) of admission cam shaft 6 along the direction of oil groove a, flow to VVT phase discriminator 8 then, by 01 access, flow to the I3 (see figure 2) of admission cam shaft 6 from the oil of h22, flow to VVT phase discriminator 8 then along the direction of oil groove a; By 02 access, lead to the I1 of admission cam shaft first diameter of axle from the oil of cylinder cap main oil gallery h1 then along oil groove b, lead to the E1 of exhaust cam shaft 5 first diameters of axle along oil groove c.The diameter of axle position of oil along oilhole I2 following current to the second to N camshaft-bearing cap that enters admission cam shaft 6 oil groove I1 is lubricated, and I1 oil groove and I2 oil groove connect; The diameter of axle position of oil along oil groove E2 following current to the second to the N camshaft-bearing cap that enters exhaust cam shaft 5 oil groove E1 is lubricated, and E1 oil groove and E2 oil groove connect.

Adopt said structure to make that whole group bearing cap is in light weight, the lubricating oil path of VVT and camshaft is integrated in one cleverly, structure is very compact, and casting technique is simple, satisfying the high performance while of motor, reduce cost of material, reduced the space of motor peripheral disposition, improved the cost performance of motor greatly.

Claims

1. a car engine camshaft bearing cap comprises: first camshaft-bearing cap (1) and a plurality of second camshaft-bearing cap (2).

2. car engine camshaft bearing cap according to claim 1 is characterized in that: first camshaft-bearing cap (1) and a plurality of second camshaft-bearing cap (2) are installed on the engine cylinder cover (7), form the diameter of axle hole of camshaft (5,6) together.

3. car engine camshaft bearing cap according to claim 1 and 2, it is characterized in that: be cast with oil groove (a) on the fitting surface of first camshaft-bearing cap (1) and cylinder cap (7) towards air inlet VVT phase discriminator (8), enter from the lubricant oil of cylinder block oilhole (h) from cylinder cap (7), be divided into two-way (h1, h2) then, oil from the first via (h2) inserts from first access point (00,01), flow to along the oil groove direction in the oil circuit of admission cam shaft (6), flow to VVT phase discriminator (8) then; Oil from the second tunnel (h1) is inserted by second access point (02), leads in the oil circuit of admission cam shaft first diameter of axle along second oil groove (b) then, leads in the oil circuit of exhaust cam shaft first diameter of axle along the 3rd oil groove (c).

4. according to each described car engine camshaft bearing cap of claim 1-3, it is characterized in that: first camshaft-bearing cap (1) arrives with the cylinder cap positioning combination by two setting sleeves (4) that are installed on the cylinder cap (7); Second camshaft-bearing cap (2) has guaranteed the coaxality of camshaft bearing by holding down bolt (3) and cylinder cap (7) positioning combination together.

5. according to each described car engine camshaft bearing cap of claim 1-4, it is characterized in that: the oily following current to the second in admission cam shaft (6) oil groove to the diameter of axle position of N camshaft-bearing cap (2) is lubricated; The oily following current second that enters exhaust cam shaft (5) oil groove to the diameter of axle position of N camshaft-bearing cap (2) is lubricated.

6. according to claims 3 described car engine camshaft bearing caps, it is characterized in that: first access point (00,01) is two, near the head of first camshaft-bearing cap, first diameter of axle; Second access point (02) is positioned at the middle part of first camshaft bearing lid, connects the second and the 3rd oil groove (b, c).

7. according to each described car engine camshaft bearing cap of claim 1-6, it is characterized in that: the end of first camshaft-bearing cap (d, e) portion is to the axial location of plaing a part of camshaft.