CN201982195U - Cylinder cover of 2.0L gasoline engine - Google Patents

Abstract

The utility model relates to a cylinder cover of a 2.0L gasoline engine, which comprises in-line four cylinders, four valves, a tangential inlet channel and an integral structure cylinder cover. The end face of the cylinder cover at one side which corresponds to the front end of the engine is the front end of the cylinder cover; an inlet side adjacent to the front end of the cylinder cover is provided with a pressure regulating valve seat mounting surface; the included angle (beta) between the pressure regulating valve seat mounting surface and the upper end face of the cylinder cover is 73 degrees; the pressure regulating valve seat mounting surface is provided with four oil holes; the height (A) of the cylinder cover is 132mm; the distance (B) from the intersection of the line of centres of inlet valve retainer bottom holes and the line of centres of exhaust valve retainer bottom holes to the centre line of the cylinder is 1mm; the distance (C) from the intersection of the line of centres of the inlet valve retainer bottom holes and the line of centres of exhaust valve retainer bottom holes to a flame face is 22.5mm; and the included angle (alpha) between the centre lines of the inlet valve retainer bottom holes and the centre lines of the exhaust valve retainer bottom holes is 57 degrees. The cylinder cover of the 2.0L gasoline engine has the beneficial effects that when the regulation is carried out through swirl rate to meet the requirement of Europe IV emission, the complexity of the structure of a valve actuating mechanism can be effectively reduced, and the cost is reduced.

Description

2.0L petrol engine cylinder cap

Technical field

The utility model relates to technical field of internal combustion engines, relates in particular to a kind of 2.0L petrol engine cylinder cap.

Background technique

The effect of cylinder head is the common bags that forms of blanket gas cylinder sleeve and piston, and mechanical stress of bearing and thermal stress are very big.Valve reasonable in design (number, size) and inlet and outlet road can guarantee high charging efficiency and lower manufacture cost.The size of the cylinder cap of this type of motor is little, combustion-chamber shape is simple, and low cost of manufacture can obtain different swirl rates and circulation coefficient by the part adjustment to intake duct under the prerequisite that does not change jacket structure for water, satisfy multiple power range Engine Matching needs, the product extensibility is strong.In order to solve cooling and rigidity problem, adopting the cooling water channel of boring is current major technique measure.

Summary of the invention

The purpose of this utility model provides a kind of gasoline engine cylinder cover that can mate 2.0L and 2.4L, satisfies the requirement of petrol engine Europe IV discharging.

Concrete structural design scheme is as follows:

2.0L the petrol engine cylinder cap comprises in-line four cylinder, four valves, tangential inlet duct, monolithic construction cylinder cap, the cylinder cap end face of a corresponding side with motor head is the cylinder cap front end.

The air inlet side adjacent with the cylinder cap front end is provided with the pressuring adjusting valve base attachment face, and pressuring adjusting valve base attachment face and cylinder cap upper-end surface angle β are 73 °; Four oilholes that the pressuring adjusting valve base attachment face is provided with, wherein first oilhole communicates with the cylinder cap oil leab, and second oilhole and the 3rd oilhole are spill port, and the 4th oilhole communicates with the pressuring adjusting valve base oil inlet hole.

Described cylinder head height A is 132mm, the point of intersection of the inlet valve seat ring bottom outlet line of centres and the exhaust valve seat insert bottom outlet line of centres is apart between the cylinder centerline being 1mm apart from B, the point of intersection of the inlet valve seat ring bottom outlet line of centres and the exhaust valve seat insert bottom outlet line of centres is 22.5mm apart from the distance C of fire power face, distance D on the cylinder cap between the adjacent bolt hole of installation cylinder cap guard shield is 88mm, and the angle α between inlet valve seat ring bottom outlet center line and the exhaust valve seat insert bottom outlet center line is 57 °.

Described inlet valve seat ring bottom outlet throat diameter E is φ 29mm, and exhaust valve seat insert bottom outlet throat diameter F is φ 26.5mm.

Useful technique effect of the present utility model is: adopt four air valve structures, when satisfying the requiring of Europe IV discharging by the swirl rate adjustment, can effectively reduce the complex structure degree of distribution device, reduce cost.

Description of drawings

Fig. 1 is the utility model structural drawing.

Fig. 2 is the rear view of Fig. 1.

Fig. 3 is the plan view of Fig. 1.

Fig. 4 is the right elevation of Fig. 1.

Fig. 5 is the A-A sectional view of Fig. 2.

Among the last figure, inlet valve seat ring bottom outlet 1, exhaust valve seat insert bottom outlet 2, pressuring adjusting valve base attachment face 3, oilhole 4, cylinder cap upper-end surface 5, cylinder cap front end 6.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment:

Referring to Fig. 1 and Fig. 2,2.0L petrol engine cylinder cap is in-line four cylinder, four valves, tangential inlet duct, monolithic construction cylinder cap.The cylinder cap blank adopts casting thin-wall, minimum wall thickness (MINI W.) 4.5mm.

The cylinder cap end face of a corresponding side with motor head is a cylinder cap front end 6, and the air inlet side adjacent with cylinder cap front end 6 is provided with pressuring adjusting valve base attachment face 3, and the angle β between pressuring adjusting valve base attachment face 3 and the cylinder cap upper-end surface 5 is 73 °, sees Fig. 4; Four oilholes 4 that offer on the pressuring adjusting valve base attachment face 3, wherein first oilhole communicates with the cylinder cap oil leab, and second oilhole and the 3rd oilhole are spill port, and the 4th oilhole communicates with the pressuring adjusting valve base oil inlet hole, sees Fig. 3.

The cylinder head height A is 132mm, sees Fig. 3; The point of intersection of the line of centres of the line of centres of inlet valve seat ring bottom outlet 1 and exhaust valve seat insert bottom outlet 2 is apart between the cylinder centerline being 1mm apart from B, the point of intersection of the line of centres of the line of centres of inlet valve seat ring bottom outlet 1 and exhaust valve seat insert bottom outlet 2 is 22.5mm apart from the distance C of fire power face, sees Fig. 5; Distance D on the cylinder cap between the adjacent bolt hole of installation cylinder cap guard shield is 88mm, sees Fig. 2; Angle α between the center line of the center line of inlet valve seat ring bottom outlet 1 and exhaust valve seat insert bottom outlet 2 is 57 °, sees Fig. 5; Inlet valve seat ring bottom outlet 1 throat diameter E is φ 29mm, and exhaust valve seat insert bottom outlet 2 throat diameter F are φ 26.5mm.

Claims (1)

1.2.0L the petrol engine cylinder cap comprises in-line four cylinder, four valves, tangential inlet duct, monolithic construction cylinder cap, the cylinder cap end face of a corresponding side with motor head is the cylinder cap front end, it is characterized in that:

The air inlet side adjacent with the cylinder cap front end is provided with the pressuring adjusting valve base attachment face, and pressuring adjusting valve base attachment face and cylinder cap upper-end surface angle β are 73 °; Four oilholes that the pressuring adjusting valve base attachment face is provided with, wherein first oilhole communicates with the cylinder cap oil leab, and second oilhole and the 3rd oilhole are spill port, and the 4th oilhole communicates with the pressuring adjusting valve base oil inlet hole;

Described cylinder head height A is 132mm, the point of intersection of the inlet valve seat ring bottom outlet line of centres and the exhaust valve seat insert bottom outlet line of centres is apart between the cylinder centerline being 1mm apart from B, the point of intersection of the inlet valve seat ring bottom outlet line of centres and the exhaust valve seat insert bottom outlet line of centres is 22.5mm apart from the distance C of fire power face, distance D on the cylinder cap between the adjacent bolt hole of installation cylinder cap guard shield is 88mm, and the angle α between inlet valve seat ring bottom outlet center line and the exhaust valve seat insert bottom outlet center line is 57 °;

Described inlet valve seat ring bottom outlet throat diameter E is φ 29mm, and exhaust valve seat insert bottom outlet throat diameter F is φ 26.5mm.

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