CN2903431Y

CN2903431Y - Cylinder head

Info

Publication number: CN2903431Y
Application number: CN 200620080683
Authority: CN
Inventors: 张英; 李昌信
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2006-01-24
Filing date: 2006-01-24
Publication date: 2007-05-23
Anticipated expiration: 2016-01-24

Abstract

The utility model discloses a novel cylinder cap, comprising a cylinder cap body provided with an upper plane, and a lower plane which can be connected tightly with the engine cylinder body. The cylinder cap body is inside provided with a fuel injector sleeve, a cooling water jacket which can cool the cylinder cap body and the fuel injector sleeve, and a fueler for the engine fuel injector. An intake passage and an exhaust passage are fixedly arranged on the cylinder cap body to supply and exhaust air for the engine cylinder respectively. The intake passage is communicated with the cylinder cap body through two air intake ports, and the inner cavity of the intake passage takes a shape of helix near the air intake ports. The exhaust passage is communicated with the cylinder cap body through two air vents, and the inner cavity of the exhaust passage takes a tangential shape over the air vents. The utility model can reduce the discharge of the engine effectively, improve the discharge quality of the engine, and achieve environmental protection.

Description

Novel cylinder head

Technical field

The utility model relates to a kind of technical field of motor, especially relates to a kind of novel cylinder head on a kind of motor.

Background technique

Cylinder head is an important components on the motor, and it not only plays crucial effect to the proper functioning of motor, also is a vitals that influences the discharging of motor.Present developing rapidly along with the internal-combustion engine industry, and the continuous progress of society, people to the demand of vehicle also in continuous raising, meanwhile, people to the requirement of living environment also in continuous raising, in order to improve the environment that people live, country has adopted various modes, and wherein most important one is exactly to make laws the discharging of strict limiting vehicle.For satisfying more maximum discharge rules; to realize protection to people's living environment; satisfy simultaneously the needs of motor proper functioning again; to obtain higher pressure of explosion and to adapt to the heat load requirement; people have adopted several different methods to come motor is improved; but; these methods transformation to engine cylinder mostly are bigger; and to the cylinder head of motor less than what big change; this has not only increased production cost and complexity, has reduced manufacturing efficiency, simultaneously; the difficulty that has also increased operation and used has influenced the normal use of people to it.

Summary of the invention

The technical problems to be solved in the utility model has provided a kind of novel cylinder head, and it can effectively reduce the discharging of motor, has improved the discharge quality of motor.

For solving the problems of the technologies described above, the technical solution of the utility model is: novel cylinder head, comprise the cylinder lid, the cylinder lid have last plane and can with the close-connected lower plane of engine cylinder, the cooling jacket that be provided with oil sprayer bushing in the cylinder lid, can cool off to cylinder lid and oil sprayer bushing, and engine fuel injector oil supplying device; Also be fixed with the intake duct that can be the cylinder air feed and the air outlet flue of exhaust on the described cylinder lid, described intake duct is communicated with the cylinder lid by two suction ports, and the inner chamber of intake duct is positioned at suction port place shape in the shape of a spiral; Described air outlet channel is communicated with the cylinder lid by two air outlets, and the air outlet channel inner chamber locates to be tangential shape above being positioned at the air outlet.

As a kind of optimal way, described oil sprayer bushing is inlayed by the bottom and is fixed in the cylinder lid, and is provided with O-ring seals between cylinder lid top and the oil sprayer bushing.

Optimize mode as another kind, described cooling jacket comprises the following water cavity that is arranged on the side of oil sprayer bushing bottom week in the cylinder lid, the last backwater cavity that all sides of the top oil sprayer bushing of following water cavity are provided with upper water cavity, be communicated with upper water cavity, is communicated with last backwater cavity and is located at water cavity next time below the backwater cavity; Described down water cavity is communicated with by the circumferential weld that is positioned at all sides of cylinder lid oil sprayer bushing with upper water cavity, the backwater hole that the lower plane of described cylinder lid is provided with four water inlets being communicated with following water cavity and is communicated with water cavity next time.

Optimize mode as another kind, described oil sprayer oil supplying device comprises oil input channel that is communicated with oil injector hole on the cylinder lid and the oil sprayer back oil road that is opened in the oil input channel, and the opening of oil sprayer back oil road on the cylinder head body sidewall is lower than the opening in the oil input channel.

Optimize mode as another kind, the plane is provided with pit on the described cylinder lid, and the sidewall of cylinder lid is provided with the through hole that is communicated with pit, but sealing and fixing has the plastics of stationary engine upper conductor to stop up in the through hole.

Optimize mode as another kind, described cylinder lid is provided with the oil return oil duct that is communicated with the gentle cylinder body lower plane of pit, and the oil return oil duct is communicated with the oil duct of engine cylinder.

Optimize mode as another kind, described cylinder lid is provided with the EVB oil duct that the oil on the engine cylinder can be transported to the oil duct of exhaust and brake system EVB on the rocker shaft bed.

Adopt the novel cylinder head of said structure, owing to be to have adopted spiral intake duct in suction port place and place, air outlet to be tangential shape air outlet channel, the design of such intake and exhaust port, can be so that the intake and exhaust port of cylinder be adapted to the work of cylinder more, make the burning of the fuel mixture in the cylinder more abundant, firing effect is better, thereby reduces the harmful matter in the engine exhaust gas, reduces the pollution of environment and the harm of people's health.And the cooling water chamber of graywater and backwater also reach the setting of water inlet, make the flow direction of cooling water more reasonable, have improved the cooling effect of whole cylinder cap, simultaneously, also saved return pipe, together with fixing of oil spout wire harness, make the complete machine structure of motor compact more, reliability improves, and cost reduces.The layout in oil sprayer oil inlet and oil return road makes that the oil pipe on the motor is arranged succinct more, neat.Adopt auxilliary mode of establishing back oil road on the cylinder head, solved and only depended on the halfway phenomenon of push-rod hole oil return, make car no matter under what kind of walk, oil can be got back to oil sump, and the oil return that makes cylinder cover is more thorough.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

Fig. 1 is the schematic representation of novel cylinder head of the present utility model;

Fig. 2 is the worm's eye view of novel cylinder head of the present utility model;

Fig. 3 is the plan view of novel cylinder head of the present utility model;

Fig. 4 is that A---A among Fig. 3 is to sectional view;

Fig. 5 is that B---B among Fig. 4 is to sectional view;

Fig. 6 is that D---D among Fig. 5 is to partial sectional view;

Fig. 7 is that C---C among Fig. 5 is to partial sectional view;

Fig. 8 is that E---E among Fig. 1 is to partial sectional view;

Fig. 9 is the schematic representation of intake duct in the novel cylinder head of the present utility model;

Figure 10 is the schematic representation of air outlet channel in the novel cylinder head of the present utility model.

Embodiment

With reference to accompanying drawing, a kind of novel cylinder head of the present utility model is: the cylinder lid 1 that includes motor, as Fig. 1, Fig. 2 and shown in Figure 3, cylinder lid 1 have last plane 11 and can with the close-connected lower plane 12 of engine cylinder, being provided with in cylinder lid 1 can be by the oil sprayer bushing 2 of dress oil sprayer, as shown in Figure 4, oil sprayer bushing 2 can adopt to inlay by the bottom and be fixed in the cylinder lid 1, and is provided with O-ring seals 21 between cylinder lid 1 top and oil sprayer bushing 2.On cylinder lid 1, also be provided with and hold cooling water circulation cooling jacket 3 so that cylinder lid 1 and oil sprayer bushing 2 are cooled off, and engine fuel injector oil supplying device 6, on cylinder lid 1, also be fixed with the intake duct 4 that can be the cylinder air feed and the air outlet flue 5 of exhaust, as Fig. 9 and shown in Figure 10, wherein intake duct 4 is provided with two suction ports 41, intake duct 4 is communicated with cylinder lid 1 by two suction ports 41, and intake duct 4 inner chambers are positioned at suction port 41 places shape in the shape of a spiral; Air outlet channel 5 is provided with two air outlets 51, air outlet channel 5 is communicated with cylinder lid 1 by two air outlets 51, and air outlet channel 5 inner chambers are positioned at 81 places, 51 tops, air outlet and are tangential shape, such setting and shape, can be so that the air inlet of cylinder and air outlet flue be adapted to the work of cylinder more, make the burning of the fuel mixture in the cylinder more abundant, firing effect is better, thereby reduces the harmful matter in the engine exhaust gas.

For the flow direction of cooling circulating water in cooling water chamber more reasonable, as shown in Figure 4, cooling jacket 3 comprises the following water cavity 31 that is arranged on all sides in oil sprayer bushing 2 bottoms in the cylinder lid 1, all sides of oil sprayer bushing 2 are provided with upper water cavity 32 above following water cavity 31, with the last backwater cavity 33 that is communicated with upper water cavity 32, and be communicated with to go up backwater cavity 33 and be located at the water cavity next time 34 of backwater cavity 33 belows, and following water cavity 31 is communicated with by the circumferential weld 13 that is positioned at oil sprayer bushing 2 all sides on the cylinder lid 1 with upper water cavity 32, and the backwater hole 36 that on the lower plane 12 of cylinder lid 1, is provided with four water inlets 35 being communicated with following water cavity 31 and is communicated with water cavity 34 next time, as shown in Figure 2, such structure, improved the cooling effect of entire cylinder head, saved return pipe simultaneously, make the complete machine structure of motor compact more, service behaviour is more stable.

For further improving the compactedness of motor complete machine structure, as shown in Figure 5 and Figure 6, oil sprayer oil supplying device 6 can be oil input channel 61 that is communicated with oil injector hole and the oil sprayer back oil road 62 that is opened in the oil input channel 61 on cylinder lid 1; Oil input channel 61 can be the inclined hole that is arranged on the cylinder lid 1, oil sprayer back oil road 62 then can be as shown in Figure 8, can be the duct that upwards is communicated with the oil sprayer oil input channel from the air inlet skew back of cylinder lid 1, promptly the opening of oil sprayer back oil road 62 on cylinder lid 1 sidewall be lower than the opening in the oil input channel 61.Also be provided with the return tube that is communicated with oil sprayer back oil road 62 on cylinder lid 1, return tube can be by crossing the whelk nail and is fixed on the cylinder head air inlet side plane, and this layout in oil sprayer oil inlet and oil return road makes that the oil pipe on the motor is arranged succinct more, neat.

For can lead fixed more mixed and disorderly on the motor is good, to guarantee the proper functioning of motor, as shown in Figure 4, on plane 11 on the cylinder lid 1, be provided with pit 7, this pit can give casting earlier when making cylinder head, give again after also cylinder head being made and processing, on the sidewall of cylinder lid 1, be provided with the through hole 71 that is communicated with pit 7, and but sealing and fixing has the plastics of stationary engine upper conductor to stop up 72 in through hole 71, be about to lead and be fixed on the cylinder head, thereby avoided of the influence of the mixed and disorderly lead of motor engine operation by plastics obstruction 72.

Equally, on cylinder lid 1, be provided with the oil return oil duct 8 that is communicated with pit 7 gentle cylinder body 1 lower planes 12, as shown in Figure 4, oil return oil duct 8 can be communicated with the back oil road on the engine cylinder, such structure has solved and has only depended on the halfway phenomenon of push-rod hole oil return, makes car no matter under what kind of walk, oil can be got back to oil sump, and the oil return that makes cylinder cover is more thorough.

Since on the present motor in order to improve its emission performance as much as possible, all be provided with exhaust and brake system EVB system mostly, in order to guarantee the forced feed of exhaust and brake system EVB system, as Fig. 5 and shown in Figure 7, on cylinder lid 1, be provided with exhaust and brake system EVB oil duct 9, it can be respectively with engine cylinder on horizontal oil duct and the EVB oil duct on the rocker shaft bed be communicated with, so just the oil on the engine cylinder can be sent to the oil duct on the rocker shaft bed, by the oil delivering device on the oil duct on the arm axle seat and rocking arm and the pitman arm shaft oil pressure be supplied with exhaust and brake system EVB system again.

Claims

1, novel cylinder head, comprise cylinder lid (1), cylinder lid (1) have last plane (11) and can with the close-connected lower plane of engine cylinder (12), the cooling jacket (3) that be provided with oil sprayer bushing (2) in the cylinder lid (1), can cool off to cylinder lid (1) and oil sprayer bushing (2), and engine fuel injector oil supplying device (6); Also be fixed with the intake duct (4) that can be the cylinder air feed and the air outlet flue (5) of exhaust on the described cylinder lid (1), it is characterized in that: described intake duct (4) is communicated with cylinder lid (1) by two suction ports (41), and intake duct (4) inner chamber is positioned at suction port (41) and locates shape in the shape of a spiral; Described air outlet channel (5) is communicated with cylinder lid (1) by two air outlets (51), and air outlet channel (5) inner chamber be positioned at air outlet (51) above (81) locate to be tangential shape.

2, novel cylinder head according to claim 1 is characterized in that: described oil sprayer bushing (2) is inlayed by the bottom and is fixed in the cylinder lid (1), and is provided with O-ring seals (21) between cylinder lid (1) top and the oil sprayer bushing (2).

3, novel cylinder head according to claim 1, it is characterized in that: described cooling jacket (3) comprises the following water cavity (31) that is arranged on the interior oil sprayer bushing of cylinder lid (1) (2) bottom week side, and all sides of the top oil sprayer bushing (2) of following water cavity (31) are provided with upper water cavity (32), the last backwater cavity (33) that is communicated with upper water cavity (32), are communicated with last backwater cavity (33) and are located at the water cavity next time (34) below the backwater cavity (33); Described down water cavity (31) is communicated with by the circumferential weld (13) that is positioned at all sides of oil sprayer bushing (2) on the cylinder lid (1) with upper water cavity (32), the backwater hole (36) that the lower plane (12) of described cylinder lid (1) is provided with four water inlets (35) of being communicated with following water cavity (31) and is communicated with water cavity (34) next time.

4, novel cylinder head according to claim 1, it is characterized in that: described oil sprayer oil supplying device (6) comprises the oil input channel (61) that is communicated with the last oil injector hole of cylinder lid (1) and is opened on the interior oil sprayer back oil road (62) of oil input channel (61) that the opening of oil sprayer back oil road (62) on cylinder lid (1) sidewall is lower than the opening in the oil input channel (61).

5, novel cylinder head according to claim 1, it is characterized in that: described cylinder lid (1) is gone up plane (11) and is provided with pit (7), the sidewall of cylinder lid (1) is provided with the through hole (71) that is communicated with pit (7), through hole (71) but interior sealing and fixing has the plastics obstructions (72) of stationary engine upper conductor.

6, novel cylinder head according to claim 5 is characterized in that: described cylinder lid (1) is provided with the oil return oil duct (8) that is communicated with the gentle cylinder body of pit (7) (1) lower plane (12), and oil return oil duct (8) is communicated with the oil duct of engine cylinder.

7, novel cylinder head according to claim 1 is characterized in that: described cylinder lid (1) is provided with the EVB oil duct (9) of the oil duct that the oil on the engine cylinder can be transported to exhaust and brake system EVB on the rocker shaft bed.