CN201184224Y - Exhaust valve brake device for four-valve engine - Google Patents
Exhaust valve brake device for four-valve engine Download PDFInfo
- Publication number
- CN201184224Y CN201184224Y CNU2008200187427U CN200820018742U CN201184224Y CN 201184224 Y CN201184224 Y CN 201184224Y CN U2008200187427 U CNU2008200187427 U CN U2008200187427U CN 200820018742 U CN200820018742 U CN 200820018742U CN 201184224 Y CN201184224 Y CN 201184224Y
- Authority
- CN
- China
- Prior art keywords
- exhaust valve
- oilhole
- valve
- piston
- rocker arm
- 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 - Lifetime
Links
Images
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The utility model relates to an exhaust valve braking device, which comprises an exhaust valve, an exhaust valve bridge, a rocker arm structure installed on the cylinder cover and used for opening the exhaust valve, a power device fixed below the rocker arm structure and used for driving the rocker arm structure to rotate, an adjusting bolt component positioned above the exhaust valve bridge and used for sealing and leaking oil, a cylinder body, and a cylinder cover oil passage. In the utility model, the exhaust valve is kept opened so as to reduce the work done by the gas in a combustion chamber for a piston, reduce the engine speed and the speed of a whole vehicle, improve the braking power, is helpful for reducing vehicle speed when the vehicle drives downhill for a long time, enable the vehicle to be kept in a safe speed range, reduce the usage of a service brake, greatly reduce the wear of the service brake and tires, and reduce the fatigue of a driver. The exhaust valve braking device has the advantages of convenience, practicability, easy manufacture and low cost.
Description
(1) technical field
The utility model relates to heavy goods vehicles engine exhaust and brake technical field, particularly a kind of four-valve engine exhaust valve braking device.
(2) background technique
Along with heavy truck load-carrying quality constantly increases, diesel engine power is also in continuous increase, car load braking force day is inadequate, particularly vehicle driving is on long descending road surface, Service Brake and Tyte Wear are very serious, and the driver drives easy fatigue, thereby guarantees that vehicle has enough stopping powers, the braking force that the increases car load particular importance that seems.
(3) summary of the invention
The technical problems to be solved in the utility model provides and a kind ofly can increase car load braking moment, rational in infrastructure, convenient and practical four-valve engine exhaust valve braking device.
In order to solve the problems of the technologies described above, the utility model comprises exhaust valve, be installed in the exhaust valve bridge that is used to control exhaust valve on the exhaust valve, be installed in the rocker structure that is used to open exhaust valve on the cylinder head, be installed in the power plant that are used to drive the rocker structure rotation of rocker structure below, be positioned at the adjusting bolt assembly that exhaust valve bridge top is used for oil sealing and draining, and cylinder block, cylinder head asphalt channel; Described exhaust valve bridge one side bottom is provided with piston idol part; Described exhaust valve bridge and rocker structure are provided with the asphalt channel that communicates with the motor main oil gallery.
Rocker structure described in the utility model comprises rocker arm bracket, exhaust valve rocker arm; Exhaust valve rocker arm one end connects power plant by ball stud, and the other end is connected with the valve clearance and adjusts bolt; Above-mentioned valve clearance is adjusted bolt and is nested in the ball cup, and described exhaust valve bridge is installed in the ball cup below; Described rocker arm bracket is provided with two oilholes and oil groove, and first oilhole is perpendicular to the bottom surface, and second oilhole leads to the oil groove place; Described exhaust valve rocker arm, valve clearance are adjusted on bolt and the ball cup and are respectively equipped with the oilhole that communicates with two oilholes.
The asphalt channel of exhaust valve bridge described in the utility model comprises the oil inlet hole that communicates with oilhole on the ball cup, with the draining hole of regulating the bolt assembly sealing or opening.
Piston idol part described in the utility model comprises piston, piston spring, steel ball, stifled and two needle rollers; Above-mentioned air valve bridge piston and piston spring are installed in the wherein bottom of a side of exhaust valve bridge; Steel ball is positioned at the oil inlet hole end and is used for opening or cutting out machine oil entering piston; One of them needle roller is between piston and described air valve bridge, and another needle roller is between piston spring and steel ball.
Adjusting bolt assembly described in the utility model comprises regulates bolt, adjusting nut and adjusting bolt support; This adjusting bolt be positioned at exhaust valve bridge draining hole directly over, regulate the bolt support and be installed in and cover rocker arm bonnet under.
Cylinder block described in the utility model, cylinder head asphalt channel are included in cylinder block and are provided with the oilhole that leads to the cylinder block end face from the motor main oil gallery, are provided with the oil duct that leads to the cylinder cover upper planar surface from the cylinder head bottom surface on cylinder head; Above-mentioned oil duct communicates with oilhole, and described oil duct communicates with oilhole on the described rocker arm bracket.
The beneficial effects of the utility model:
1. stay open by the control exhaust valve, reduced the gas in the firing chamber, reduced the engine speed and the car load speed of a motor vehicle, improved braking force the piston work.
2. reduce the speed of a motor vehicle when helping the long-time descending of vehicle, and make it remain on the running velocity scope of a safety, can reduce use, greatly alleviated Service Brake and Tyte Wear, and alleviated driver's driving fatigue degree Service Brake.
3. convenient and practical, easy to manufacture, with low cost, suitable applying.
(4) description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a rocker arm bracket master TV structure schematic representation of the present utility model;
Fig. 3 is a rocker arm bracket plan structure schematic representation of the present utility model;
Fig. 4 is a rocker structure schematic representation of the present utility model;
Fig. 5 is an exhaust valve bridge structural representation of the present utility model;
Fig. 6 is an air cylinder head structure schematic representation of the present utility model;
Fig. 7 is a block structure schematic representation of the present utility model;
1 engine cam among the figure, 2 valve tappets, 3 valve actuating push rods, 4 rocker arm bonnets are cover down, 5 packing rings, 6 bolts, 7 bolts, 8 ball studs, 9 rocker arm brackets, 10 exhaust valve rocker arms, 11 ball cups, nut is adjusted in 12 valve clearancies, and bolt, 14 exhaust valve bridges, 15 adjusting nuts are adjusted in 13 valve clearancies, 16 regulate bolt, 17 bolts, and 18 packing rings, 19 regulate the bolt support, and 20 is stifled, 21 steel balls, 22 piston springs, 23 needle rollers, 24 air valve bridge pistons, 25 valve collets, 26 spring seats, 27 valve spring, 28 exhaust valves;
A first oilhole, b second oilhole, c, d, e, i oilhole, f oil inlet hole, g draining hole, h oil duct, j oil groove.
(5) embodiment
A kind of as shown in Figure 1 four-valve engine exhaust valve braking device, comprise exhaust valve 28, be installed in the exhaust valve bridge 14 that is used to control exhaust valve 28 on the exhaust valve 28, be installed in the rocker structure that is used to open exhaust valve 28 on the cylinder head, be fixed on the power plant that are used to drive the rocker structure rotation of rocker structure below, be positioned at the adjusting bolt assembly that exhaust valve bridge 14 tops are used for oil sealing and draining, and cylinder block, cylinder head asphalt channel; Described exhaust valve bridge 14 1 side bottoms are provided with piston idol part; Described exhaust valve bridge 14 and rocker structure are provided with the asphalt channel that communicates with the motor main oil gallery.
Rocker structure comprises rocker arm bracket 9, exhaust valve rocker arm 10 as described in shown in Fig. 1 .2.3.4; Exhaust valve rocker arm 10 1 ends connect power plant by ball stud 8, and the other end is connected with the valve clearance and adjusts bolt 13; Above-mentioned valve clearance is adjusted bolt 13 and is nested in the ball cup 11, and described exhaust valve bridge 14 is installed in ball cup 11 belows; Described rocker arm bracket 9 is provided with the first oilhole a, the second oilhole b and oil groove j, and the second oilhole a is perpendicular to the bottom surface, and the second oilhole b leads to oil groove j place; Described exhaust valve rocker arm 10, valve clearance are adjusted on bolt 13 and the ball cup 11 and are respectively equipped with oilhole c, oilhole d, the oilhole e that communicates with the first oilhole a, the second oilhole b.
As Fig. 1. the asphalt channel of exhaust valve bridge 14 comprises the oil inlet hole f that communicates with oilhole e on the ball cup 11 as described in shown in Figure 5, with the draining hole g that regulates the bolt assembly sealing or open.
Described piston idol part comprises piston 24, piston spring 22, steel ball 21, stifled 20 and two needle rollers 23; Above-mentioned air valve bridge piston 24 and piston spring 22 are installed in the wherein bottom of a side of exhaust valve bridge 14; Steel ball 21 is positioned at oil inlet hole f end and is used for opening or cutting out machine oil entering piston 24; One of them needle roller 23 is between piston 24 and described air valve bridge 14, and another needle roller 23 is between piston spring 22 and steel ball 21.
Described adjusting bolt assembly comprises to be regulated bolt 16, adjusting nut 15 and regulates bolt support 19; This adjusting bolt 16 be positioned at exhaust valve bridge draining hole g directly over, regulate bolt support 19 and be installed in rocker arm bonnet under and cover on 4.
Described as shown in Figure 1 exhaust valve 28 is installed on the cylinder head by the valve spring 27 of valve collet 25, spring seat 26 and spring seat 26 belows.
Described as shown in Figure 1 power plant comprise the valve tappet 2 that links to each other with engine cam 1, are installed in the valve actuating push rod that can slide up and down 3 in the valve tappet 2, and described valve actuating push rod 3 upper ends are installed on the described exhaust valve rocker arm 10 by bulb 8.
As Fig. 6, shown in Figure 7 as described in cylinder block, cylinder head asphalt channel be included in cylinder block and be provided with the oilhole i that leads to the cylinder block end face from the motor main oil gallery, on cylinder head, be provided with the oil duct h that leads to the cylinder cover upper planar surface from the cylinder head bottom surface; Above-mentioned oil duct h communicates with oilhole i, and described oil duct h communicates with oilhole a on the described rocker arm bracket.
Oilhole i, oil duct h, oilhole c, oilhole d, oilhole e, oil inlet hole f, the first oilhole a, the second oilhole b, one line connect, and by these oil ducts lubricating oil are supplied with actuator.
The utility model also includes packing ring 5 as shown in Figure 1, bolt 6, and bolt 7, nut 12, bolt 17, packing ring 18 are adjusted in the valve clearance.
When vehicle driving need be braked in the downhill path, the driver closes the butterfly valve on the outlet pipe, when cutting out, butterfly valve stops oil automatically, at this moment piston is in the pressure wave that the exhaust valve 28 of that cylinder of aspirating stroke near bottom dead center can produce by the waste gas that the piston of adjacent cylinder is released and opens, this moment the oilhole i that flows through successively of the part lubricating oil in the main oil gallery, oilhole h, the first oilhole a, the second oilhole b, oilhole c, oilhole d, oilhole e, oil inlet hole f enters exhaust valve bridge 14, the engine oil pressure that produces backs down steel ball 21, lubricating oil flows to the cavity on air valve bridge piston 24 tops, air valve bridge piston 24 moves downward under the effect of engine oil pressure and piston spring 23, when pressure wave disappearance final vacuum door 28 has the trend of closing under the effect of valve spring 27, this moment, steel ball 21 cut out oil inlet hole f, the sealing plane of regulating bolt 16 compresses draining hole g, so just, formed high pressure oil at air valve bridge piston 24 upper spaces, under the effect of high pressure oil, make air valve bridge piston 24 remain on down pan position, thereby make exhaust valve 28 keep a little aperture, cause in the compression stroke gas some discharge from exhaust valve, will lose part energy like this, thereby reduce the acting of expansion stroke to engine piston, engine speed is reduced, thereby Vehicle Speed is lowered.When exhaust stroke, camshaft 1 drives exhaust valve rocker arm 10 by valve tappet 2, valve actuating push rod 3 and ball stud 8 and rotates, thereby driving exhaust valve bridge 14 walks downwards, make and regulate bolt 16 bottom surfaces and the disengagement of exhaust valve bridge 14 sealing planes, draining hole g is opened, the high pressure oil of air valve bridge piston 24 upper spaces is just released, air valve bridge piston 24 returns, and this working procedure is carried out repeatedly.When end of braking, butterfly valve is opened, and motor recovers the proper functioning circulation.
Claims (6)
1. four-valve engine exhaust valve braking device, it is characterized in that: comprise exhaust valve (28), be installed in the exhaust valve bridge (14) that is used to control exhaust valve (28) on the exhaust valve, be installed in the rocker structure that is used to open exhaust valve (28) on the cylinder head, be installed in the power plant that are used to drive the rocker structure rotation of rocker structure below, be positioned at the adjusting bolt assembly that exhaust valve bridge (14) top is used for oil sealing and draining, and cylinder block, cylinder head asphalt channel; Described exhaust valve bridge (14) one side bottoms are provided with piston idol part; Described exhaust valve bridge (14) and rocker structure are provided with the asphalt channel that communicates with the motor main oil gallery.
2. according to the described four-valve engine exhaust valve braking device of claim 1, it is characterized in that: described rocker structure comprises rocker arm bracket (9) and exhaust valve rocker arm (10); Exhaust valve rocker arm (10) one ends connect power plant by ball stud (8), and the other end is connected with the valve clearance and adjusts bolt (13); Above-mentioned valve clearance is adjusted bolt (13) and is nested in the ball cup (11), and described exhaust valve bridge (14) is installed in ball cup (11) below; Described rocker arm bracket (9) is provided with two oilhole (a) and (b) and oil groove (j), and first oilhole (a) is perpendicular to the bottom surface, and second oilhole (b) leads to oil groove (j) to be located; On described exhaust valve rocker arm (10), valve clearance adjustment bolt (13) and the ball cup (11) oilhole (c), (d), (e) that communicates with two oilhole (a) and (b) arranged respectively.
3. according to the described four-valve engine exhaust valve braking device of claim 1, it is characterized in that: the asphalt channel of described exhaust valve bridge (14) comprises the oil inlet hole (f) that communicates with oilhole (e) on the ball cup (11), with the draining hole (g) of regulating the bolt assembly sealing or opening.
4. according to the described four-valve engine exhaust valve braking device of claim 3, it is characterized in that: described piston idol part comprises piston (24), piston spring (22), steel ball (21), stifled (20) and two needle rollers (23); Above-mentioned air valve bridge piston (24) and piston spring (22) are installed in the wherein bottom of a side of exhaust valve bridge (14); Steel ball (21) is positioned at oil inlet hole (f) end, is used for opening or closing machine oil entering piston (24); One of them needle roller (23) is positioned between piston (24) and the described air valve bridge (14), and another needle roller (23) is positioned between piston spring (22) and the steel ball (21).
5. according to the described four-valve engine exhaust valve braking device of claim 3, it is characterized in that: described adjusting bolt assembly comprises to be regulated bolt (16), adjusting nut (15) and regulates bolt support (19); This adjusting bolt (16) be positioned at exhaust valve bridge draining hole (g) directly over, regulate bolt support (19) and be installed in rocker arm bonnet under and cover on (4).
6. according to the described four-valve engine exhaust valve braking device of claim 2, it is characterized in that: described cylinder block, cylinder head asphalt channel are included in cylinder block and are provided with the oilhole (i) that leads to the cylinder block end face from the motor main oil gallery, are provided with the oil duct (h) that leads to the cylinder cover upper planar surface from the cylinder head bottom surface on cylinder head; Above-mentioned oil duct (h) communicates with oilhole (i), and described oil duct (h) communicates with oilhole (a) on the described rocker arm bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200187427U CN201184224Y (en) | 2008-03-06 | 2008-03-06 | Exhaust valve brake device for four-valve engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200187427U CN201184224Y (en) | 2008-03-06 | 2008-03-06 | Exhaust valve brake device for four-valve engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201184224Y true CN201184224Y (en) | 2009-01-21 |
Family
ID=40271964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200187427U Expired - Lifetime CN201184224Y (en) | 2008-03-06 | 2008-03-06 | Exhaust valve brake device for four-valve engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201184224Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114772A (en) * | 2011-01-25 | 2011-07-06 | 江苏技术师范学院 | Electric piston-driven electric vehicle suitable for downhill braking |
| CN102806843A (en) * | 2011-01-25 | 2012-12-05 | 江苏技术师范学院 | Electric vehicle |
| CN105089845A (en) * | 2015-09-08 | 2015-11-25 | 潍柴动力股份有限公司 | Blockage device and engine applying blockage device |
| CN105134415A (en) * | 2015-06-15 | 2015-12-09 | 广州柴油机厂股份有限公司 | Mechanical fuel gas cylinder inlet control device of gas engine |
| CN105351026A (en) * | 2015-11-23 | 2016-02-24 | 潍柴动力股份有限公司 | Engine exhaust brake system |
| CN107288701A (en) * | 2017-06-27 | 2017-10-24 | 浙江大学 | A kind of cycle compression release type complemental brake system of engine two and method |
| CN107401552A (en) * | 2017-09-12 | 2017-11-28 | 台州威德隆机械有限公司 | A kind of durable type automobile rocker |
| CN111140304A (en) * | 2020-01-19 | 2020-05-12 | 中国重汽集团济南动力有限公司 | Valve bridge assembly |
| CN112177702A (en) * | 2020-12-02 | 2021-01-05 | 江苏卓联精密机械有限公司 | Self-resetting single-valve double-piston hydraulic driving device and method for overhead cam engine |
| US11377980B2 (en) | 2020-12-02 | 2022-07-05 | Jiangsu Jointek Precision Machinery Co., Ltd | Self-resetting single-valve double-piston hydraulic drive device and method for overhead cam engine |
-
2008
- 2008-03-06 CN CNU2008200187427U patent/CN201184224Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102806843A (en) * | 2011-01-25 | 2012-12-05 | 江苏技术师范学院 | Electric vehicle |
| CN102806843B (en) * | 2011-01-25 | 2014-12-17 | 江苏理工学院 | Electric vehicle |
| CN102114772A (en) * | 2011-01-25 | 2011-07-06 | 江苏技术师范学院 | Electric piston-driven electric vehicle suitable for downhill braking |
| CN105134415A (en) * | 2015-06-15 | 2015-12-09 | 广州柴油机厂股份有限公司 | Mechanical fuel gas cylinder inlet control device of gas engine |
| CN105089845A (en) * | 2015-09-08 | 2015-11-25 | 潍柴动力股份有限公司 | Blockage device and engine applying blockage device |
| CN105351026B (en) * | 2015-11-23 | 2018-01-30 | 潍柴动力股份有限公司 | A kind of engine exhaust and brake system |
| CN105351026A (en) * | 2015-11-23 | 2016-02-24 | 潍柴动力股份有限公司 | Engine exhaust brake system |
| CN107288701A (en) * | 2017-06-27 | 2017-10-24 | 浙江大学 | A kind of cycle compression release type complemental brake system of engine two and method |
| CN107288701B (en) * | 2017-06-27 | 2023-05-26 | 浙江大学 | Two-stroke compression release type auxiliary braking device and method for engine |
| CN107401552A (en) * | 2017-09-12 | 2017-11-28 | 台州威德隆机械有限公司 | A kind of durable type automobile rocker |
| CN111140304A (en) * | 2020-01-19 | 2020-05-12 | 中国重汽集团济南动力有限公司 | Valve bridge assembly |
| CN111140304B (en) * | 2020-01-19 | 2021-10-26 | 中国重汽集团济南动力有限公司 | Valve bridge assembly |
| CN112177702A (en) * | 2020-12-02 | 2021-01-05 | 江苏卓联精密机械有限公司 | Self-resetting single-valve double-piston hydraulic driving device and method for overhead cam engine |
| CN112177702B (en) * | 2020-12-02 | 2021-03-12 | 江苏卓联精密机械有限公司 | Self-resetting single-valve double-piston hydraulic driving device and method for overhead cam engine |
| US11377980B2 (en) | 2020-12-02 | 2022-07-05 | Jiangsu Jointek Precision Machinery Co., Ltd | Self-resetting single-valve double-piston hydraulic drive device and method for overhead cam engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201184224Y (en) | Exhaust valve brake device for four-valve engine | |
| US10626764B2 (en) | Internal combustion engine | |
| EP0828061B1 (en) | Exhaust pulse boosted engine compression braking method | |
| CN105003314B (en) | A kind of rocking arm of integrated engine braking | |
| US9376941B2 (en) | Method and apparatus for resetting valve lift for use in engine brake | |
| CN104975898B (en) | A kind of integrated form rocking arm for being used to produce engine braking | |
| US5564385A (en) | Method and device for motor-braking by means of a multi-cylinder internal combustion engine | |
| US20140182536A1 (en) | Reset type rocker braking method and device | |
| CN102840005B (en) | A kind of solid chain type composite rocker arm brake device | |
| CN103835781B (en) | Combined type engine brake device | |
| CN202090976U (en) | Rocker arm brake apparatus with major and minor pistons | |
| CN102787880A (en) | Method and device for manufacturing rocking arm with main piston and auxiliary piston | |
| CN203097985U (en) | Engine braking device with special cam for braking single valve | |
| CN102562214A (en) | Compound rocker arm device used for producing auxiliary valve movement of engine | |
| CN101131110A (en) | Exhaust valve braking device | |
| CN101649761A (en) | Gas bleed brake of engine | |
| CN204851359U (en) | Integrated engine brake's rocking arm | |
| CN113187578B (en) | Internal combustion engine in-cylinder brake device | |
| CN202611787U (en) | Fixed-chain-type special rocker arm brake device | |
| CN204851355U (en) | A integrated form rocking arm for producing engine brake | |
| CN103388504B (en) | A kind of solid chain type dedicated rocker arm braking device | |
| US6321717B1 (en) | Double-lift exhaust pulse boosted engine compression braking method | |
| CN103939172A (en) | Independent cam type engine braking device | |
| CN203891957U (en) | Independent cam engine brake device | |
| CN111828121A (en) | Internal combustion engine cylinder brake device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: China Zhongqi Group Hangzhou Engine Co.,Ltd Assignor: Jinan Tech Center Co., Ltd., China Heavy Truck Group Contract record no.: 2010330001194 Denomination of utility model: Exhaust valve brake device for four-valve engine Granted publication date: 20090121 License type: Exclusive License Record date: 20100628 |
|
| ASS | Succession or assignment of patent right |
Owner name: CHINA NATIONAL HEAVY DUTY TRUCK GROUP JINAN POWER Free format text: FORMER OWNER: JINAN TECH CENTER CO., LTD., CHINA HEAVY TRUCK GROUP Effective date: 20101026 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20101026 Address after: 250002 Ji'nan, central city, Shandong hero hill road, No. 165 Patentee after: China National Heavy Duty Truck Group Jinan Power Co., Ltd. Address before: 250002 Ji'nan, central city, Shandong hero hill road, No. 165 Patentee before: Jinan Tech Center Co., Ltd., China Heavy Truck Group |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090121 |