CN202325733U - Control device for valve clearance - Google Patents
Control device for valve clearance Download PDFInfo
- Publication number
- CN202325733U CN202325733U CN2011204408115U CN201120440811U CN202325733U CN 202325733 U CN202325733 U CN 202325733U CN 2011204408115 U CN2011204408115 U CN 2011204408115U CN 201120440811 U CN201120440811 U CN 201120440811U CN 202325733 U CN202325733 U CN 202325733U
- Authority
- CN
- China
- Prior art keywords
- plunger
- valve
- adjusting bolt
- spring
- embedded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The utility model relates to a control device for a valve clearance. The control device is characterized in that a valve adjusting threaded hole is formed in an exhaust rocker arm; a plunger hole is formed under the valve adjusting threaded hole; a plunger is embedded into the plunger hole; a T-shaped slot is arranged at the top of the plunger; a pedestal structure is arranged at the bottom of the plunger; the bottom of the valve adjusting bolt has a structure with an inversed T-shaped cross section; a spring is fixedly connected inside the bottom of the valve adjusting bolt; the bottom of the valve adjusting bolt is embedded into the T-shaped slot at the top of the plunger; a clearance is reserved between the bottom of the valve adjusting bolt and the bottom of the T-shaped slot of the plunger through the spring; and an adjusting bolt is embedded into the valve adjusting threaded hole. The spring is arranged in the adjusting bolt, so that the structure is compact, the impact of a valve mechanism is reduced, the noise is reduced, the reliability is increased, the function of compensating the clearance is supplied to a brake device, and the lost motion type engine braking is realized.
Description
Technical field
The utility model relates to a kind of valve clearance control gear, belongs to a kind of gap control device of integrated engine braking device, is applied on the DENG, particularly the braking of Lost motion formula motor.
Background technique
The gross mass of Hyundai Motor is increasing, and the speed of a motor vehicle is increasingly high, only relies on the primary brake system of vehicle self can not satisfy the brake request under the vehicle high-speed overload condition.In order to guarantee the Safety performance of vehicle, must increase complemental brake system.Engine braking is through the fall holder of automobile to motor, utilizes Engine Mechanical loss, pumping loss and compression work etc. to produce braking function, thereby increases automobile brake power.
When precipitous road surfaces such as lower long slope, rugged hill path, must utilize engine braking, reduce the frequency of utilization of foot brake effectively, avoid causing the temperature of brake bush to raise because of the long-time break that uses, braking force is descended, in addition ineffective.
Summary of the invention
The purpose of the utility model provides a kind of valve clearance control gear, and it has adopted the built-in spring of adjustment bolt, compact structure; Can reduce the impact of valve mechanism, reduce noise, improve reliability; Can be the braking device gap function that affords redress, realize Lost motion formula engine braking.
The technological scheme of the utility model is achieved in that a kind of valve clearance control gear, it is characterized in that: have valve adjustment tapped hole on the exhaust rocker arm, valve adjustment tapped hole lower end has plunger hole; Plunger embeds in the plunger hole; Plunger head has " T type " groove, and the bottom is " resembling pin " structure, and valve adjustment bolt bottom is that the cross section is " inverted T shape " structure; Spring is fixedly connected in the valve adjustment bolt bottom; Valve adjustment bolt bottom is embedded in " T type " groove of plunger head, and the gap is reserved through spring and plunger " T type " groove bottom in valve adjustment bolt bottom, and the adjustment bolt is embedded in the valve adjustment tapped hole.
The good effect of the utility model is simple in structure, good rigidity, and cost is low, has realized in the Lost motion formula engine braking function of required compensation valve braking distance when not braking.
Description of drawings
Fig. 1 is the structural drawing of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further: as shown in Figure 1; A kind of valve clearance control gear is characterized in that: have valve adjustment tapped hole 2 on the exhaust rocker arm 1, valve adjustment tapped hole 2 lower ends have plunger hole 3; Plunger 4 embeds in the plunger hole 3; " T type " groove is arranged at plunger 4 tops, and the bottom is " resembling pin " structure, and valve adjustment bolt 5 bottoms are that the cross section is " inverted T shape " structure; Spring 6 is fixedly connected in valve adjustment bolt 5 bottoms; Valve adjustment bolt 5 bottoms are embedded in " T type " groove at plunger 4 tops, and the gap is reserved through spring 6 and plunger 4 " T type " groove bottom in valve adjustment bolt 5 bottoms, and adjustment bolt 5 is embedded in the valve adjustment tapped hole 2.
Embodiment, as shown in Figure 1, when engine braking is not worked; Plunger 4 tops do not have machine oil, and during 1 motion of camshaft actuated exhaust rocker arm, spring 6 is compressed; Plunger 4 moves upward, and adjustment bolt 5 contacts with plunger 4, drives exhaust valve; The lift of exhaust brake is compensated by gap control device, and the valve lift that is used on the cam brake is not because exhaust valve can be opened by compensation in this gap, and engine braking is inoperative.
When needing engine braking work, machine oil gets into the brake circuit of exhaust rocker arm 1, and plunger 4 tops are full of machine oil; The gap that plunger 4 and adjustment bolt are 5 can not be compressed; Exhaust valve promptly is opened at the compression top center place according to the cam profile entire run, engine braking work.
During the cancellation braking state, the machine oil that plunger 4 and adjustment bolt are 5 goes out through the emptying orifice flow, and plunger 4 can move up and down, and overcomes the braking lift on the exhaust cam, and engine braking is inoperative, the motor proper functioning.
Plunger 4 and the gap width of adjustment between the bolt 5 equal to brake valve lift value that little cam produces and normal emission valve clearance value with, rotation adjustment bolt adjustment valve clearance tightens with nut to desired value then.
Claims (1)
1. valve clearance control gear; It is characterized in that: have valve adjustment tapped hole on the exhaust rocker arm, valve adjustment tapped hole lower end has plunger hole, and plunger embeds in the plunger hole; Plunger head has " T type " groove; Valve adjustment bolt bottom is that the cross section is " inverted T shape " structure, and spring is fixedly connected in the valve adjustment bolt bottom, and valve adjustment bolt bottom is embedded in " T type " groove of plunger head; The gap is reserved through spring and plunger " T type " groove bottom in valve adjustment bolt bottom, and the adjustment bolt is embedded in the valve adjustment tapped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204408115U CN202325733U (en) | 2011-11-09 | 2011-11-09 | Control device for valve clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204408115U CN202325733U (en) | 2011-11-09 | 2011-11-09 | Control device for valve clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325733U true CN202325733U (en) | 2012-07-11 |
Family
ID=46437716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204408115U Expired - Fee Related CN202325733U (en) | 2011-11-09 | 2011-11-09 | Control device for valve clearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3169883A4 (en) * | 2014-07-15 | 2018-04-04 | Jacobs Vehicle Systems, Inc. | Bias mechanisms for a rocker arm and lost motion component of a valve bridge |
-
2011
- 2011-11-09 CN CN2011204408115U patent/CN202325733U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3169883A4 (en) * | 2014-07-15 | 2018-04-04 | Jacobs Vehicle Systems, Inc. | Bias mechanisms for a rocker arm and lost motion component of a valve bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20191109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |