CN202100336U

CN202100336U - Combination of automobile engine cylinder head and exhaust manifold

Info

Publication number: CN202100336U
Application number: CN2011201364543U
Authority: CN
Inventors: 练中源; 伍健强
Original assignee: Zhaoqing Honda Foundry Co Ltd
Current assignee: Zhaoqing Honda Foundry Co Ltd
Priority date: 2011-05-03
Filing date: 2011-05-03
Publication date: 2012-01-04
Anticipated expiration: 2021-05-03

Abstract

The utility model belongs to the field of processing of automobile parts, and particularly relates to a combination of an automobile engine cylinder head and an exhaust manifold. The combination of the automobile engine cylinder head and the exhaust manifold lightens the weight of an automobile engine, improves sealing performance between the engine cylinder head and the exhaust manifold, and saves production cost. A cam shaft is disposed on the upper portion of the cylinder head, the lower portion of the cylinder head, an engine cylinder and a piston form a combustion chamber, the cylinder head is connected with a gas inlet manifold, the combination of the engine cylinder head and the exhaust manifold is an integral structure, and the integral sizes of the combination include that the length is 460mm, the width ranges from 240mm to 280mm, and the height ranges from 100mm to 120mm. The combination of the automobile engine cylinder head and the exhaust manifold improves the sealing performance between the engine cylinder head and the exhaust manifold, lightens the integral weight of the engine, and saves production process and production cost.

Description

The assemblying body of a kind of automobile engine cylinder head and gas exhaust manifold

Technical field

The utility model belongs to the auto parts and components manufacture field, is specifically related to the assemblying body of a kind of automobile engine cylinder head and gas exhaust manifold.

Background technique

Motor is a whole set of motive power outputting apparatus; Engine cylinder cover is the vitals of motor car engine; Its top is equipped with camshaft, and bottom and engine cylinder-body, piston are formed the firing chamber, and both sides are intake duct and air outlet flue; Be connected with the intake manifold that gets into oil gas and the gas exhaust manifold of combustion gas, in cooling water channel and the lubricating oil path that runs through arranged.Therefore, engine cylinder cover plays very important effect to the power of motor and the influence of service behaviour.When combustion gas in the firing chamber during detonation; Gas temperature moment, this high temperature thermal shocking acted on generation repeatedly up to 7MPa pressure up to more than 1100 ℃, and this pressure directly acts on the joint of engine cylinder cover and cylinder body; It is thus clear that the operating conditions of engine cylinder cover is very abominable.

When therefore engine cylinder cover being designed, need to consider air flue, the geometrical shape of fuel chambers and the whole wall thickness of cylinder cap.From the casting structure of engine cylinder cover, inner-cavity structure is complicated, changeableization of shape, and wall thickness is irregular; Cylinder head cooling water road inner chamber is having many bends or curves, and wall thickness is generally at the 4-5 millimeter, and thinnest part has only 2.5 millimeters.And along with the direction of motor car engine to high efficiency, low oil consumption, of low pollution develops, it is more and more complicated that the structure of cylinder cap can become, because the particular job conditional request of cylinder cap is very high to the performance requirement of cylinder cap.For example, cylinder cap will bear up the air tightness test ne-leakage of 0.3-0.4MPa; Intake and exhaust port requires very sternly on geometrical shape, and it directly influences direction that oil gas gets into and mix, engine power, priming speed, generally all need carry out runner test check; Cooling water channel shape that cylinder cap is inner and volume size are to all having direct influence in working life of motor.This shows that say that the Foundry Production technical requirements of automobile engine cylinder head is high, difficulty is big, its engine cylinder cover mold design, manufacturing also are vital assurances.

The thermal conductivity of aluminum alloy is good, helps improving compression ratio, so aluminum alloy cylinder cover is widely used in recent years.Generally speaking; The assemblying body of motor car engine internal engine cylinder cap and gas exhaust manifold is the assembly that cylinder cap and gas exhaust manifold assemble; The gas exhaust manifold body material is a cast iron; Engine cylinder cover is connected into assemblying body (as shown in Figure 1) through bolt, sealing gasket with gas exhaust manifold, there is following technological deficiency in the assemblying body of such engine cylinder cover and gas exhaust manifold:

At first, gas exhaust manifold is through being bolted on the cylinder cap, and in a single day the torsion of bolt can not get guaranteeing, then can cause accidents such as gas leakage, outlet pipe abnormal vibrations; Secondly, engine cylinder cover requires than higher with the assembling of the assemblying body of gas exhaust manifold, and gas exhaust manifold, exhaust manifold pad, cylinder cap attachment face all require good planeness and surface quality, if phenomenons such as scuffing, sand hole, gas leakage easily; Once more; The assemblying body complex manufacturing of engine cylinder cover and gas exhaust manifold, cost of production is higher, generally speaking; Engine cylinder cover, gas exhaust manifold, bolt and sealing gasket need to assemble (as shown in Figure 3) again after the casting respectively; Whole process is following: through dissolving, golden type reorganize and outfit, cast, process cylinder cap 3, gas exhaust manifold 4 also need pass through dissolving, golden type and reorganize and outfit, casts, processes and make, the cylinder cap 3 of machine shaping is assembled together with bolt 1 and sealing gasket 2 with gas exhaust manifold 4 again; At last, connected elements such as bolt, sealing gasket are many, and the gas exhaust manifold body material is a cast iron, and this all causes engine weight bigger, and fuel consumption is big.

The model utility content

In order to reduce the weight of motor car engine; Improve the sealing between engine cylinder cover and the gas exhaust manifold assemblying body; Save engine cylinder cover and gas exhaust manifold assemblying body cost of production; The utility model provides a kind of novel automobile engine cylinder head and gas exhaust manifold assemblying body from simplifying the structure of motor car engine.In automobile engine cylinder head of the utility model and the gas exhaust manifold assemblying body; Cylinder cap top is equipped with camshaft; Cylinder cap bottom and engine cylinder-body, piston are formed the firing chamber; Cylinder cap is connected with intake manifold, and different with existing technology is that the above-mentioned engine cylinder cover and the assemblying body of gas exhaust manifold are integrative-structures.

Bolt between the utility model cancellation engine cylinder cover and the gas exhaust manifold connects; Remove bolt and sealing gasket between engine cylinder cover and the gas exhaust manifold, engine cylinder cover directly is connected with gas exhaust manifold, combine together; The parts that form a whole can be used the moulding of aluminum alloy one-step casting.

The overall dimensions of cylinder cap and gas exhaust manifold assemblying body is in the existing technology: length is 460mm, and width is 340mm, highly is 270mm, and after engine cylinder cover and gas exhaust manifold were combined together, overall dimensions reduced to some extent.The overall dimensions of the assemblying body of cylinder cap and gas exhaust manifold integrative-structure is: length is 460mm, and width is 240-280mm, highly is 100-120mm.The utility model has also carried out preferably the overall dimensions of cylinder cap and gas exhaust manifold integrative-structure assemblying body, and preferably, the overall dimensions of combinations thereof body is: length is 460mm, and width is 260mm, highly is 110mm.

New work engine cylinder cap and gas exhaust manifold assemblying body are structure as a whole; Only need be through once dissolving, golden type are reorganized and outfit, cast, processed and can obtain finished product; Need no longer that the dissolving of gas exhaust manifold, golden type are reorganized and outfit, casting, processing technology and assembly technology; Also saved and bolt, sealing gasket between assembly technology, greatly saved production technology, reduced cost of production.

Owing to comprise aluminum alloy cylinder cover, the gas exhaust manifold that is connected with cylinder cap and connected element bolt and sealing gasket in automobile engine cylinder head of the prior art and the gas exhaust manifold assemblying body, and the material of gas exhaust manifold was a cast iron originally; Automobile engine cylinder head of the utility model and gas exhaust manifold assemblying body; Cancelled bolt, sealing gasket, and changed the casting material of gas exhaust manifold into aluminum alloy material, gas exhaust manifold and cylinder cap have been combined together; Constitute the integrative-structure assemblying body; With the moulding of aluminum alloy one-step casting, the complete machine weight of motor has reduced by 3.5 kilograms, thereby has reduced the oil consumption of automobile.

In a word, the utility model has compared with prior art reduced the weight of motor car engine, has improved the sealing between engine cylinder cover and the gas exhaust manifold, has saved production technology and cost of production.

Description of drawings

Fig. 1 is the structural representation of engine cylinder cover of the prior art and gas exhaust manifold assemblying body.In Fig. 1,1 is bolt, and 2 is sealing gasket, and 3 is engine cylinder cover, and 4 is gas exhaust manifold.

Fig. 2 is the structural representation of the utility model engine cylinder cover and gas exhaust manifold assemblying body.

Fig. 3 is engine cylinder cover and a gas exhaust manifold assemblying body processing and assembling flow chart in the existing technology.

Fig. 4 is the processing process figure of the utility model engine cylinder cover and gas exhaust manifold assemblying body.

Embodiment

Below in conjunction with accompanying drawing, further describe the utility model through specific embodiment, but the utility model is not limited only to following examples.In the scope of the utility model or in the content that does not break away from the utility model, spirit and scope; And to described automobile engine cylinder head of the utility model and the proportional material of dwindling or enlarging, replacing parts and engine cylinder cover and gas exhaust manifold assemblying body itself of gas exhaust manifold assemblying body; All be conspicuous to those skilled in the art, they all are regarded as and are included within the utility model scope.

Fig. 1 is the cylinder cap of motor in the existing technology and the structural representation of gas exhaust manifold assemblying body.In Fig. 1,1 is bolt, and 2 is sealing gasket, and 3 is engine cylinder cover, and 4 is gas exhaust manifold.Fig. 2 is the structural representation of the utility model engine cylinder cover and gas exhaust manifold assemblying body.

Automobile engine cylinder head comprises cylinder cap 3, the gas exhaust manifold 4 that is connected with cylinder cap 3 and connected element bolt 1 and sealing gasket 2 with the gas exhaust manifold assemblying body in the existing technology; The utility model automobile engine cylinder head and gas exhaust manifold assemblying body have been cancelled bolt 1, sealing gasket 2, and cylinder cap 3 directly is connected with gas exhaust manifold 4, and the parts that become one structure, this assemblying body can be used the moulding of aluminum alloy one-step casting.The overall dimensions of this engine cylinder cover and gas exhaust manifold assemblying body is: length is 460mm, and width is 260mm, highly is 110mm.

The utility model engine cylinder cover 3 is as shown in Figure 4 as the casting processing technology of integrative-structure assemblying body parts with gas exhaust manifold 4.The casting processing technology of this assemblying body comprises process steps such as inspection, dissolving, the golden type of aluminum alloy material are reorganized and outfit, cast, processing, and its process step is following:

(1), the inspection of aluminum alloy material;

(2), the dissolving step of aluminum alloy material: aluminium input dissolving stove fusing; When temperature of aluminum liquid reaches 710 ℃, place depassing unit aluminium liquid to stir, inert gas is imported in the aluminium liquid through stirring rod; Inert gas produces great amount of bubbles in aluminium liquid; Take out of from aluminium liquid with gases such as the oxygen that is about to easy and aluminium liquid generation chemical reaction, hydrogen, guarantee aluminium liquid hydrogen content less than 0.2cc/100gAL, thereby obtain highly purified aluminium liquid.

(3), golden type (mould) is reorganized and outfit: metal mold is at first carried out golden type spraying under 180～240 ℃ of temperature; After spraying finishes; Place 510 ℃ of sintering temperatures, sintering time was controlled at about 1 hour, can play through the spraying of golden type that to intercept aluminium liquid and golden type bonding and keep golden type action of temperature;

(4), casting: cylinder cap and gas exhaust manifold integrative-structure assemblying body adopt low-pressure casting process; Aluminium liquid after the dissolving is transferred in the maintenance stove of insulation, and the control temperature of aluminum liquid keeps this sealing of furnace foundation at 675 ℃; Communicate with mould sealing die cavity through suction pipe; To keeping the stove pressurization, make aluminium liquid under this pressure, fill mold cavity, cooled and solidified.

(5), after the casting of engine cylinder cover and gas exhaust manifold integrative-structure assemblying body finishes, through processing, get product again.

Fig. 3 is engine cylinder cover and a gas exhaust manifold assemblying body processing and assembling flow chart in the existing technology.Compare with the gas exhaust manifold processing and assembling with engine cylinder cover in the existing technology; The engine cylinder cover 3 of the utility model motor and gas exhaust manifold 4 are as the integrative-structure parts; Only need reorganize and outfit, cast, process and can obtain finished product, need no longer that the dissolving of gas exhaust manifold 4, golden type are reorganized and outfit, casting, processing technology and assembly technology through once dissolving, golden type, also saved and bolt 1, sealing gasket 2 between assembly technology; Greatly saved production technology, reduced and produced old.

Owing to comprise cylinder cap 3, the gas exhaust manifold 4 that is connected with cylinder cap 3 and connected element bolt 1 and sealing gasket 2 in automobile engine cylinder head of the prior art and the gas exhaust manifold assemblying body, and the material of gas exhaust manifold 4 was a cast iron originally; Automobile engine cylinder head of the utility model and gas exhaust manifold assemblying body; Cancelled bolt 1, sealing gasket 2, and changed the casting material of gas exhaust manifold 4 into aluminum alloy material, gas exhaust manifold 4 directly has been connected with cylinder cap 3; Combine together; With the moulding of aluminum alloy one-step casting, the complete machine weight of motor has reduced by 3.5 kilograms, thereby has reduced the oil consumption of automobile.

Claims

1. the assemblying body of automobile engine cylinder head and gas exhaust manifold, described cylinder cap top is equipped with camshaft, and cylinder cap bottom and engine cylinder-body, piston are formed the firing chamber; Cylinder cap is connected with intake manifold; It is characterized in that the assemblying body of described cylinder cap and gas exhaust manifold is an integrative-structure, the overall dimensions of described assemblying body is: length is 460mm; Width is 240-280mm, highly is 100-120mm.

2. the assemblying body of automobile engine cylinder head as claimed in claim 1 and gas exhaust manifold, it is characterized in that the overall dimensions of described assemblying body is: length is 460mm, width is 260mm, highly is 110mm.