CN201100145Y

CN201100145Y - A four-valve gas engine valve bridge part

Info

Publication number: CN201100145Y
Application number: CNU2007200290283U
Authority: CN
Inventors: 韩景峰; 王照辉; 刘洪德; 种江涛; 杨济操
Original assignee: HUAYUAN LAIDONG INTERNAL COMBUSTION ENGINE CO Ltd SHANDONG
Current assignee: HUAYUAN LAIDONG INTERNAL COMBUSTION ENGINE CO Ltd SHANDONG
Priority date: 2007-10-15
Filing date: 2007-10-15
Publication date: 2008-08-13
Anticipated expiration: 2017-10-15

Abstract

The utility model relates to a four-valve diesel engine air valve bridge component which belongs to the technical field of combustion engine fitting part devices and in particular relates to a combustion engine with a four-valve structure. A four-valve combustion engine air valve bridge component comprises an air valve bridge 1 and is characterized in that an air valve bridge cap 2 is arranged on the top of the air valve bridge 1 and is used to realize the connection between an air valve rocker arm and the air valve bridge 1, the contact face between one end of an air valve cross bar and the top of the air valve is a cylinder face, a gap adjusting screw bolt 3 which guarantees that the air valve bridge can simultaneously contact with two air valves is arranged on the other end of the air valve bridge 1, simultaneously, the end is also provided with a positioning dent 5 which is matched with the top of the air valve, and an adjusting screw bolt 3 is fixed with a female screw 4. The four-valve diesel engine air valve bridge component of the utility model has the advantages of simple structure, good technique, wide applicable range and the like and in particular suitable for the combustion engine with small cylinder diameter (the cylinder diameter is less than 100mm).

Description

A kind of four gas valve IC engine air valve bridge parts

One, technical field:

The utility model relates to a kind of four-valve diesel engine air valve bridge parts, belongs to internal combustion engine part device technique field, the particularly internal-combustion engine of four air valve structures.

Two, technical background

In technical field of internal combustion engines; for adapting to science and technology development; the worsening shortages of the world oil energy; the reinforcement day by day of environmental protection; the Economy of internal-combustion engine and the requirement of discharging are strict day by day; the internal-combustion engine of four air valve structures more and more is employed; the i.e. structural configuration of two exhaust valves of two intake valves; and it is wherein also varied for the structural configuration that realizes four valves; drive rocking arm as Single Over Head Camshaft; drive air valve structure by rocking arm again; Dual Over Head Camshaft directly drives air valve structure, also has OHV to pass through tappet; push rod drives rocking arm, drives air valve bridge by rocking arm again; connect and drive two valves by the air valve bridge parts; realize four air valve structures, then a kind of structure is simple in structure owing to it, good manufacturability; can on former OHV two air valve structure bases, improve and realize; but air valve bridge parts in the past are owing to its complex structure, and therefore application is more on big bore internal combustion engine, has complex structure; manufacturability is poor, the shortcoming that Applicable scope is little.

Three, summary of the invention

The purpose of this utility model is to solve the deficiency that above-mentioned prior art exists, and provides a kind of simple in structure, and good manufacturability is applied widely, is particularly useful for the air valve bridge parts of little cylinder diameter (cylinder diameter is below 100mm) four gas valve IC engines.

Principle of the present utility model and key problem in technology are that valve rocker passes through the air valve bridge parts and drives two valves simultaneously, thereby realize that OHV drives four air valve structures that two rocking arms are realized internal-combustion engine by single cylinder, structure is simple as much as possible compact, be applicable to small-bore diesel engine, pass through the intensity of the optimization and improvement air valve bridge of structure simultaneously, be adapted to the requirement of high rotating speed diesel engine (more than the 3600rpm).

Technical solution of the present utility model is as follows:

A kind of four gas valve IC engine air valve bridge parts, comprise air valve bridge 1, special way is that the top of air valve bridge 1 is provided with one for improving the air valve bridge cap 2 of its wear resistance, be used to realize being connected between valve rocker and the air valve bridge 1, one end of air valve bridge crossbeam and valve top surface of contact are the cylndrical surface, the other end of air valve bridge 1 is provided with the clearance adjusting screw 3 that guarantees that air valve bridge can contact simultaneously with two valves, regulate the High Pressure Difference of two valves, make two valve event unanimities, this end also is provided with a location pit 5 that cooperates with the valve top simultaneously, prevent that air valve bridge 1 from rotating along the stationary axle direction, adjust screw 3 and undertaken fastening by nut 4;

The main body air valve bridge 1 of described air valve bridge parts adopts the manufacturing of forged steel technology;

For the further application that improves intensity and reduce material, air valve bridge 1 crossbeam adopts " worker " font structural design.

A kind of four gas valve IC engine air valve bridge parts of the utility model, simple in structure, good manufacturability, advantage such as applied widely is particularly useful for little cylinder diameter (cylinder diameter is below 100mm) internal-combustion engine.

Four, description of drawings:

Fig. 1: the utility model four-valve diesel engine air valve bridge modular construction user mode figure;

Fig. 2: the B-B sectional view among Fig. 1;

Fig. 3: the utility model small-bore diesel engine four valve cylinder head stereograms;

Among the figure: 1, air valve bridge, 2, the air valve bridge cap, 3, adjust screw, 4, nut, 5, pit, 6, valve I, 7, valve II, 8, valve rocker.

Five, embodiment

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

A kind of four gas valve IC engine air valve bridge parts, comprise air valve bridge 1, the top of air valve bridge 1 is provided with to improving the air valve bridge cap 2 of its wear resistance, as the medium that is connected between valve rocker 8 and the air valve bridge 1, guarantee the wear resistance of air valve bridge 1, one end of air valve bridge crossbeam and valve top surface of contact are the cylndrical surface, the other end of air valve bridge 1 is provided with the clearance adjusting screw 3 that guarantees that air valve bridge can contact simultaneously with valve I6 and valve II7, be used to regulate the High Pressure Difference of valve I6 and valve II7, guarantee the conformity of two valve events, this end also is provided with a location pit 5 that cooperates with the valve top simultaneously, be used for fixing air valve bridge 1, prevent that it from rotating along the stationary axle direction, adjustment screw 3 is undertaken fastening by nut 4, and the main body air valve bridge of air valve bridge parts adopts the manufacturing of forged steel technology, be the further application that improves intensity and reduce material, crossbeam adopts " worker " font structural design, and carries out three-dimensional finite element by software and carry out strength check, has guaranteed the requirement of high rotating speed diesel engine.

More than guarantee to lead to the model utility structure, have compact structure, good manufacturability, the advantage that intensity is high can be fit to little cylinder diameter, the requirement of high rotating speed internal-combustion engine.

Claims

1, a kind of four gas valve IC engine air valve bridge parts, comprise air valve bridge (1), the top that is characterised in that air valve bridge (1) is provided with one for improving the air valve bridge cap (2) of its wear resistance, be used to realize being connected between valve rocker and the air valve bridge (1), one end of air valve bridge crossbeam and valve top surface of contact are the cylndrical surface, the other end of air valve bridge (1) is provided with the clearance adjusting screw (3) that guarantees that air valve bridge can contact simultaneously with two valves, this end also is provided with a location pit (5) that cooperates with the valve top simultaneously, prevent that air valve bridge (1) from rotating along the stationary axle direction, adjust screw (3) and undertaken fastening by nut (4).

2,, it is characterized in that the main body air valve bridge (1) of described air valve bridge parts adopts forged steel technology to make according to the described a kind of four gas valve IC engine air valve bridge parts of claim 1.

3,, it is characterized in that the crossbeam of air valve bridge (1) adopts I-shape construction according to the described a kind of four gas valve IC engine air valve bridge parts of claim 1.