CN202628297U

CN202628297U - Universal cylinder head

Info

Publication number: CN202628297U
Application number: CN2012203050314U
Authority: CN
Inventors: 邓晓碛; 李魁; 潘用兰
Original assignee: CHONGQING JIATAI MACHINERY Co Ltd
Current assignee: CHONGQING JIATAI MACHINERY Co Ltd
Priority date: 2012-06-27
Filing date: 2012-06-27
Publication date: 2012-12-26
Anticipated expiration: 2022-06-27

Abstract

The utility model discloses a universal cylinder head which comprises a cavity (1), a gas inlet passage (2), an exhaust passage (3), a combustion chamber (4) and a cooling air passage (5). A gas inlet guide tube (7) is inclined towards the gas inlet passage (2) at an oblique angle gamma 1, an exhaust guide tube (10) is inclined towards the exhaust passage (3) at an oblique angle gamma 2, and the gamma 1 and the gamma 2 are 15+/-2 degrees; an included angle alpha between the gas inlet passage (2) and the gas inlet guide tube (7) is 113+/-2 degrees, and an included angle beta between the exhaust passage (3) and the exhaust guide tube (10) is 105+/-2 degrees; and the combustion chamber (4) is a double-spherical combustion chamber. The gas inlet guide tube and the exhaust guide tube are arranged obliquely, the included angles between the gas inlet passage and the gas inlet guide tube as well as between the exhaust passage and the exhaust guide tube are changed, and the shape of the combustion chamber is also changed, so that the cross section of the cooling air passage is increased, gas resistance is reduced, power of an internal combustion engine is increased, and fuel consumption is lowered.

Description

General cylinder head

Technical field

The utility model relates to the general gasoline engines technical field.

Background technique

Like Fig. 1-general cylinder head shown in Figure 3, form by die cavity 1, intake duct 2, air outlet flue 3, firing chamber 4, cooling duct 5 etc.Die cavity 1 is positioned at the top of cylinder head, is furnished with two rocking arm mounting holes 6 in the die cavity 1, and firing chamber 4 is positioned at the bottom of cylinder head, and firing chamber 4 is oval spherical.Air inlet duct 7 and the 8 coaxial settings of air inlet seat ring are provided with the air inlet connection chamber 9 that is communicated with intake duct 2 between air inlet duct 7 and air inlet seat ring 8; Exhaust manifolds 10 and exhaust seat ring 11 coaxial settings are provided with the exhaust connection chamber 12 that is communicated with air outlet flue 3 between exhaust manifolds 10 and exhaust seat ring 11.Continuous successively air inlet duct 7, air inlet connection chamber 9 and air inlet seat ring 8 constitute an air-flow path of die cavities 1 and firing chamber 4, and the exhaust manifolds 10 that link to each other successively, exhaust connection chamber 12 and exhaust seat ring 11 constitute another air-flow path of die cavities 1 and firing chamber 4.Cooling duct 5 is the through holes that are positioned on the cylinder head sidewall, and an end of cooling duct 5 is near air outlet flue 3.Its structural imperfection mainly is:

(1) air inlet duct 7 vertically is provided with exhaust manifolds 10; Intake duct 2 is a bit larger tham 90 ° with angle, the air outlet flue 3 of air inlet duct 7 with the angle β of exhaust manifolds 10; Cause air-flow from intake duct 2 entering firing chambers 4, from the firing chamber 4 get into air outlet flues 3 airflow obstruction; Air inlet is insufficient, and gas communication has some setbacks;

(2) oval spherical combustion chamber 4 flame propagations and speed of ignition are slow, cause that power of IC engine is low, fuel consumption is big, do not reach the emission request in three stages (being called for short EPAIII) of Environmental Protection Administration of the United States Federal;

(3) cooling duct 5 sectional areas are little, are unfavorable for the cooling of firing chamber and spark plug, cause the heat distortion amount of cylinder cap, seat ring and cylinder head itself big.

The model utility content

The utility model technical problem to be solved is to provide that a kind of air inlet is smooth and easy, sufficient combustion, the general fast cylinder head of cooling.

For reaching above-mentioned purpose, the technological scheme that the utility model adopted is: a kind of general cylinder head comprises die cavity, intake duct, air outlet flue, firing chamber and cooling duct; Said die cavity is positioned at the top of cylinder head; Be furnished with two rocker arm brackets in the die cavity, the firing chamber is positioned at the bottom of cylinder head, air inlet duct and the coaxial setting of air inlet seat ring; Between air inlet duct and air inlet seat ring, be provided with the air inlet connection chamber that is communicated with said intake duct; The coaxial setting of exhaust manifolds and exhaust seat ring is provided with the exhaust connection chamber that is communicated with said air outlet flue between exhaust manifolds and exhaust seat ring, key is: said air inlet duct is γ 1 towards the angle of inclination of intake duct; Exhaust manifolds are γ 2 towards the angle of inclination of air outlet flue; And γ 1, γ 2=15 ± 2 °, the angle of said intake duct and air inlet duct is 113 ± 2 °, and the angle β of said air outlet flue and exhaust manifolds is 105 ± 2 °; Said firing chamber is two spherical combustion chambers, and the said pair of spherical combustion chamber passed through mutually by two pellet shapes chambeies arranging about in the big spherical cavity and form.

As preferably, said rocker arm bracket is a two-seat structure, and is consistent with the true dip direction of air inlet duct near the rocker arm bracket of air inlet duct, consistent with the true dip direction of exhaust manifolds near the rocker arm bracket of exhaust manifolds, on rocker arm bracket, has the rocking arm mounting hole.

The utility model is through air inlet duct and the exhaust manifolds of being in tilted layout; The angle of conversion intake duct and air inlet duct, air outlet flue and exhaust manifolds changes the shape of firing chamber, thereby has increased the sectional area of cooling duct; Reduce vapour lock, had following beneficial effect:.

(1) get into the air-flow of firing chamber, flow to the airflow smooth of air outlet flue from the firing chamber from intake duct, advance, alignment is smooth, vapour lock is little;

(2) flame propagation and speed of ignition are fast, burning is more abundant, have shortened period of combustion, have improved the power of internal-combustion engine, have reduced fuel consumption, and discharging is cleaning more, satisfy the emission request of EPAIII fully;

(3) cooling duct is big, and it is fast to lower the temperature around firing chamber and the spark plug, and the heat distortion amount of cylinder cap, seat ring and cylinder head itself is little, improves the working life of product.

Description of drawings

Fig. 1 is the structural representation of the general cylinder head introduced in the background technique.

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

Fig. 3 is the A-A sectional drawing of Fig. 1.

Fig. 4 is the structural representation of the utility model.

Fig. 5 is the rear view of Fig. 4.

Fig. 6 is the B-B sectional drawing of Fig. 4.

Fig. 7 is the C-C sectional drawing of Fig. 4.

Embodiment

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

Like Fig. 4, Fig. 5, Fig. 6, general cylinder head shown in Figure 7; By die cavity 1, intake duct 2, air outlet flue 3, firing chamber 4, cooling duct 5, two rocker arm brackets 6, air inlet duct 7, air inlet seat ring 8, compositions such as air inlet connection chamber 9, exhaust manifolds 10, exhaust seat ring 11, exhaust connection chamber 12, spark plug mounting hole 13, radiating fin 14.Die cavity 1 is positioned at the top of cylinder head, is furnished with two rocker arm brackets 6 in the die cavity 1, and firing chamber 4 is positioned at the bottom of cylinder head, is provided with spark plug mounting hole 13 in the firing chamber 4, and suction tude 5 lays respectively on the sidewall of cylinder head with outlet pipe 6.Air inlet duct 7 and the 8 coaxial settings of air inlet seat ring are provided with air inlet connection chamber 9 between air inlet duct 7 and air inlet seat ring 8, air inlet duct 7, air inlet connection chamber 9 and air inlet seat ring 8 link to each other successively, constitute an air-flow path that is communicated with die cavity 1 and firing chamber 4.Exhaust manifolds 10 and exhaust seat ring 11 coaxial settings; Between exhaust manifolds 10 and exhaust seat ring 11, be provided with exhaust connection chamber 12; Exhaust manifolds 10, exhaust connection chamber 12 and exhaust seat ring 11 link to each other successively, constitute another air-flow path that is communicated with die cavity 1 and firing chamber 4.Air inlet connection chamber 9 is communicated with intake duct 2, and exhaust connection chamber 12 is communicated with air outlet flue 3.

As shown in Figure 6, air inlet duct 7 tilts towards intake duct 2, and the angle of inclination is γ 1; Exhaust manifolds 10 tilt towards air outlet flue 3, and the angle of inclination is γ 2; γ 1, γ 2=15 ± 2 °, be preferably 15 °.Intake duct 2 is 113 ± 2 ° with the angle of air inlet duct 7, is preferably 113 °; Air outlet flue 3 is 105 ± 2 ° with the angle β of exhaust manifolds 10, is preferably 105 °.Like Fig. 5, firing chamber 4 is two spherical combustion chambers, and two spherical combustion chambers are passed through mutually by two pellet shapes chambeies arranging about in the big spherical cavity and form.

Like Fig. 7, rocker arm bracket 6 is a two-seat structure, and is consistent with the true dip direction of air inlet duct 7 near the rocker arm bracket 6 of air inlet duct 7, consistent with the true dip direction of exhaust manifolds 10 near the rocker arm bracket 6 of exhaust manifolds 10, on rocker arm bracket 6, has rocking arm mounting hole 6a.When rocking arm is installed, be stuck in the two-seat structure of rocker arm bracket 6.Certainly, rocker arm bracket 6 can be the single seat structure also, and rocking arm is arranged to two-seat structure, during installation the two-seater of rocking arm is embraced on rocker arm bracket 6.

Air inlet duct 7 is in tilted layout with exhaust manifolds 10, and intake duct 2 increases with the angle of exhaust manifolds 10 with air inlet duct 7, air outlet flue 3, thereby has increased the sectional area of cooling duct 5, has reduced vapour lock.

Claims

1. general cylinder head; Comprise die cavity (1), intake duct (2), air outlet flue (3), firing chamber (4) and cooling duct (5), said die cavity (1) is positioned at the top of cylinder head, is furnished with two rocker arm brackets (6) in the die cavity (1); Firing chamber (4) is positioned at the bottom of cylinder head; Air inlet duct (7) and the coaxial setting of air inlet seat ring (8) are provided with the air inlet connection chamber (9) that is communicated with said intake duct (2) between air inlet duct (7) and air inlet seat ring (8), exhaust manifolds (10) and the coaxial setting of exhaust seat ring (11); Between exhaust manifolds (10) and exhaust seat ring (11), be provided with the exhaust connection chamber (12) that is communicated with said air outlet flue (3); It is characterized in that: said air inlet duct (7) is γ 1 towards the angle of inclination of intake duct (2), and exhaust manifolds (10) are γ 2 towards the angle of inclination of air outlet flue (3), and γ 1, γ 2=15 ± 2 °; Said intake duct (2) is 113 ± 2 ° with the angle of air inlet duct (7); The angle β of said air outlet flue (3) and exhaust manifolds (10) is 105 ± 2 °, and said firing chamber (4) be two spherical combustion chambers, and the said pair of spherical combustion chamber passed through mutually by two pellet shapes chambeies of layout about in the big spherical cavity and form.

2. according to the described general cylinder head of claim 1; It is characterized in that: said rocker arm bracket (6) is a two-seat structure; Rocker arm bracket (6) near air inlet duct (7) is consistent with the true dip direction of air inlet duct (7); Rocker arm bracket (6) near exhaust manifolds (10) is consistent with the true dip direction of exhaust manifolds (10), on rocker arm bracket (6), has rocking arm mounting hole (6a).