CN2546631Y - Vehicle engine - Google Patents
Vehicle engine Download PDFInfo
- Publication number
- CN2546631Y CN2546631Y CN 02262523 CN02262523U CN2546631Y CN 2546631 Y CN2546631 Y CN 2546631Y CN 02262523 CN02262523 CN 02262523 CN 02262523 U CN02262523 U CN 02262523U CN 2546631 Y CN2546631 Y CN 2546631Y
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- CN
- China
- Prior art keywords
- gear
- cylinder
- cam shaft
- valve
- master
- 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
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- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 238000010304 firing Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The technical proposal in need of protection in the utility model discloses an automobile engine mainly used for a car. The engine adopts a structure of four-valve and dual-camshaft. The combustion chamber of a cylinder is sail-shaped. An angle of 17 +- 5 degrees is formed between the central line of the valve and the central line of the cylinder. A passive gear on the exhaust camshaft is provided with a master gear and an auxiliary gear which are coaxially arranged. A transmission ring is arranged between the master gear and the auxiliary gear to make the master and the auxiliary gear stagger mutually and to ensure the master and auxiliary gear to tightly mesh with the drive gear of the inlet camshaft. The utility model improves the charging efficiency, the power of the engine and the maximum torque and has small volume; meanwhile, the utility model has the advantages of accurate valve phase, low noise of gear transmission, stable running, good antiknock property, high compression rate, oil saving and low emission.
Description
Technical field
The utility model technological scheme required for protection relates to a kind of motor car engine of little air displacement.
Background technique
The float tolerance motor of existing air displacement≤1 liter is general to adopt two-door single-shaft configuration, into two valves of a row are arranged on each cylinder, press certain phase relationship opening and closing by two valves of a camshaft actuated, owing to have only two valves, it is less that air communication is crossed the cross section, charging efficiency is low, has limited the raising of engine power and the increase of output torque.In order to obtain higher engine power and bigger moment of torsion, have only four cross-compound arrangements of employing to improve charging efficiency, but the motor volume of existing four cross-compound arrangements is bigger, mostly be used for the bigger motor of air displacement, be not suitable for installing and using of economy car, and the gear engagement between its intake and exhaust cam axle exists the back lash to produce bigger impact noise greatly, the jiggly defective of transmission, also the problem that can cause port timing not adhere to specification fully influences charging efficiency.
Summary of the invention
The utility model technological scheme required for protection technical problem to be solved provides that a kind of volume is little, charging efficiency is high, the motor car engine of the little air displacement of stable working.
The technical solution of the utility model is: motor car engine adopts four valve twin cam shaft structures, two intake valves, two exhaust valves and admission cam shaft, exhaust cam shaft are arranged on each cylinder, combustion chamber of air cylinder is a paulin shape, so-called paulin shape is meant with the cylinder centerline to be axis, intake and exhaust chamber two end faces and its tilt respectively, and 17 ± 5 ° angle is promptly arranged between the center line of the center line of intake valve and exhaust valve and cylinder.
Described exhaust cam shaft is provided with driving gear, admission cam shaft is provided with the passive tooth train, the passive tooth train is made up of two coaxial mounted master gears and pinion, one transmission ring is arranged between master gear and the pinion, master gear and pinion stagger under the resilient force of transmission ring mutually, to guarantee that master gear and pinion can enter engagement simultaneously from the driving gear both sides on the admission cam shaft when the drive state.
The technical solution of the utility model compared with prior art has obvious improvement: (1) has accomplished that volume is small and exquisite under the prerequisite that adopts four valve cross-compound arrangements raising charging efficiency, is fit to car and uses.The utility model adopts paulin shape firing chamber, and valve center line and cylinder centerline have an angle, have dwindled the area of contour of valve in the cylinder direction, and overall structure is very compact.(2) improve charging efficiency, therefore improved the power and the moment of torsion of motor.The technical solution of the utility model adopts four air valve structures by adopting paulin shape firing chamber and every cylinder, firing chamber and piston-top surface constitute good squish face, at the end form stronger eddy motion in compression, flame propagation is played a driving role, accelerate velocity of combustion, shorten period of combustion, charging efficiency improves.Tilt to cylinder inside because of valve simultaneously, aditus laryngis apart from increasing, also makes circulation efficiency increase to cylinder wall.Maximum Torque and output power all improve a lot.(3) save fuel oil, reduce noxious gas emission.The technical solution of the utility model has improved charging efficiency, makes burning more abundant, has improved combustion efficiency, so can save fuel oil and reduce discharge amount of exhaust gas.When Maximum Torque and declared working condition, its fuel consumption rate only is 290g/kwh.HC in the exhaust emissions, CO content obviously reduce.(4) antiknock quality are good.Paulin shape firing chamber room temperature field pattern in the technical solutions of the utility model is more even, is difficult for spontaneous combustion, and the capability of antidetonance is good.(5) high compression ratio.Owing to adopt paulin shape firing chamber to improve the capability of antidetonance greatly, make it have higher compression ratio when using the gasoline of same label, comparing with available engine.Using 90
#During RON gasoline, its compression ratio is 9.5: 1.The raising of compression ratio is improved important performance indexes such as the fuel economy, power, Maximum Torque of motor.(6) port timing is accurate, and the gear transmission noise is low, engine mildness.The air inlet driven gear adopts the bidentate wheel construction in the technical solution of the utility model, the noise that produces because of tooth profile error and backlash when eliminating gear engagement. improved running precision.
Description of drawings
Fig. 1 is a cylinder sectional view of the present utility model.
Fig. 2 is the structural representation of the utility model twin cam shaft.
Fig. 3 is the driving gear on the exhaust cam shaft of the present utility model and the schematic representation of the major-minor gear engagement on the admission cam shaft.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the utility model adopts paulin shape firing chamber and four valve twin cam shaft structures, charging efficiency and exhaust completeness have been improved, two intake valves 2, two exhaust valves 3 are respectively arranged respectively by admission cam shaft 4, exhaust cam shaft 5 its switches of control on each cylinder 1, the ratio of valve retainer diameter and cylinder bore: air inlet is 0.34; Exhaust is the both sides that 0.29, two inlet and exhaust valve is located at cylinder head respectively, and combustion chamber of air cylinder 6 is a paulin shape, and perpendicular to separately valve center line, described valve center line and cylinder centerline angle are at 15 ° respectively for paulin shape firing chamber end face
Adopt the open and close of four valves of twin cam shaft drive mechanism, 5 are provided with driving gear 7 on the exhaust cam shaft, driving the exhaust cam shaft timing gear by crankshaft gear by toothed belt rotates, for making port timing accurate, the noise and the kinematic error that produce because of tooth profile error and backlash when eliminating gear engagement, air inlet driven gear 4 adopts the bidentate wheel construction, be that admission cam shaft 4 is provided with the passive tooth train, the passive tooth train is made up of two coaxial mounted master gears 8 and pinion 9, one transmission ring 10 is arranged between master gear and the pinion, master gear and pinion stagger under the resilient force of transmission ring mutually, to guarantee that master gear and pinion can enter engagement simultaneously from the driving gear both sides on the admission cam shaft when the drive state.Guarantee the engagement of no gap.
Claims (2)
1, a kind of motor car engine, adopt four valve twin cam shaft structures, two intake valves (2), two exhaust valves (3) and admission cam shaft (4), exhaust cam shaft (5) are arranged on each cylinder (1), it is characterized in that: combustion chamber of air cylinder (6) is paulin shape, so-called paulin shape is meant with the cylinder centerline to be axis, intake and exhaust chamber two end faces and its tilt respectively, promptly between the center line of the center line of intake valve (2) and exhaust valve (3) and cylinder (1) 17 ± 5 ° angle are arranged.
2, motor car engine according to claim 1, it is characterized in that: described exhaust cam shaft (5) is provided with driving gear (7), admission cam shaft (4) is provided with the passive tooth train, the passive tooth train is made up of two coaxial mounted master gears (8) and pinion (9), has a transmission ring (10) master gear (8) and pinion (9) to stagger mutually under the resilient force of transmission ring (10) between master gear (8) and the pinion (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262523 CN2546631Y (en) | 2002-06-18 | 2002-06-18 | Vehicle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262523 CN2546631Y (en) | 2002-06-18 | 2002-06-18 | Vehicle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2546631Y true CN2546631Y (en) | 2003-04-23 |
Family
ID=33729069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02262523 Expired - Lifetime CN2546631Y (en) | 2002-06-18 | 2002-06-18 | Vehicle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2546631Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251843A (en) * | 2010-05-17 | 2011-11-23 | 通用汽车环球科技运作公司 | Engine including valve geometry relative to bore size |
-
2002
- 2002-06-18 CN CN 02262523 patent/CN2546631Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251843A (en) * | 2010-05-17 | 2011-11-23 | 通用汽车环球科技运作公司 | Engine including valve geometry relative to bore size |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SAIC CHERY AUTOMOBILE CO., LTD. Free format text: FORMER NAME OR ADDRESS: SAIC CHERY AUTOMOBILE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui, Wuhu Province: 243003 Patentee after: Saic Chery Automobile Co., Ltd. Address before: No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui, Wuhu Province: 243003 Patentee before: Qirui Automobile Co., Ltd., Shangqi Group |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120618 Granted publication date: 20030423 |