CN201381897Y - Single-cylinder direct injection diesel engine with low exhaust emissions - Google Patents
Single-cylinder direct injection diesel engine with low exhaust emissions Download PDFInfo
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- CN201381897Y CN201381897Y CN200920039482U CN200920039482U CN201381897Y CN 201381897 Y CN201381897 Y CN 201381897Y CN 200920039482 U CN200920039482 U CN 200920039482U CN 200920039482 U CN200920039482 U CN 200920039482U CN 201381897 Y CN201381897 Y CN 201381897Y
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- oil pump
- diesel engine
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Abstract
The utility model relates to a single-cylinder direct injection diesel engine with low exhaust emissions, which is provided with an oil pump camshaft; the oil pump camshaft comprises an oil pump cam; the contour dimensions of the oil pump cam are as follows: the length of a principal chord L is equal to 38.5mm; the radius of each secondary arc R1 is equal to 14.25mm, R2 is equal to 19.26mm, R3 is equal to 24.25mm, and the corresponding included angles Alpha1 is equal to 12 degree 46 minute, Alpha2 is equal to 57 degree 54 minute, and Alpha3 is equal to 42 degree; and in the pump camshaft, each phase angle of the oil pump cam adopts the scheme that the inclined angle between the center line of a key groove and the null line of the oil pump cam Alpha4 is equal to 19 degree 20 minute, the included angle between the null line of the oil pump cam and the symmetric center line of an gas admission cam Alpha5 is equal to 146 degree, and the symmetric center line of the gas admission cam Alpha6 is equal to 107 degree 15 minute. The single-cylinder direct injection diesel engine with low exhaust emissions provided by the utility model greatly improves the working performance, and the emission performance thereof meets the national compulsive emission standards.
Description
Technical field
The utility model relates to a kind of low emission single-cylinder direct-injection diesel engine.
Background technique
Along with the enhancing of human environmental consciousness, various environmental pollution problem are also more and more paid attention to.At present, restrictive regulation has been made to the exhaust index of internal-combustion engine by country.Diesel engine major part in the market all can not satisfy country to the existing restriction of internal-combustion engine exhaust index regulation, especially single cylinder diesel, more exists the serious discharging problem that exceeds standard.
Single-cylinder direct-injection diesel engine is that directly processing is on piston head the firing chamber, and during diesel engine work, air forms eddy current at intake duct, thereby and enters by intake valve that cylinder mixes mutually with oil bundle by the oil sprayer ejection and the burning driven plunger is done work.The mixing quality of the power character of diesel engine, fuel economy and exhaust index and above-mentioned air and fuel has relation closely.Cam shaft for diesel engine be distribution device vital part, whether accurate, the size of valve opening of valve timing diagram, the control of injection advance angle and the lift of cam of injection pump, all performance and the discharging to diesel engine plays an important role.
The model utility content
The technical problems to be solved in the utility model is: in order to solve the problem that present single-cylinder direct-injection diesel engine discharging exceeds standard, the spy provides a kind of low emission single-cylinder direct-injection diesel engine, the camshaft of this diesel engine can the optimized combustion indoor air and the mixing quality of fuel, thereby reduce the discharge value of diesel engine, make it reach national emission performance index.
The technical solution adopted in the utility model is: a kind of low emission single-cylinder direct-injection diesel engine, has the cam of injection pump axle, the cam of injection pump axle includes cam of injection pump, the contained size of cam of injection pump molded lines: main chord length L=38.5mm, each time arc radius R 1=14.25mm, R2=19.26mm, R3=24.25mm, corresponding angle α 1=12 ° 46 ', α 2=57 ° 54 ', α 3=42 °; In camshaft, each phase angle of cam of injection pump: keyway center line and cam of injection pump zero line angle α 4=19 ° 20 ', cam of injection pump zero line and 5=146 ° of intake cam symmetrical center line angle α, intake cam symmetrical center line and exhaust cam symmetrical center line α 6=107 ° 15 '.
The beneficial effects of the utility model are: by the cam of injection pump lift of improvement cam shaft for diesel engine and the size of cam phase angle, optimized the mixing quality of burning indoor air and fuel, made fuel combustion more abundant.The service behaviour of the utility model low emission single-cylinder direct-injection diesel engine improves greatly, and emission performance has reached national discharging forces standard.
Description of drawings
Fig. 1 is the structural representation of the cam of injection pump axle of the utility model diesel engine.
Fig. 2 is the structural representation of cam of injection pump.
Among the figure: 1. cam of injection pump axle 2. cam of injection pump
Embodiment
A kind of low emission single-cylinder direct-injection diesel engine, as shown in Figure 1 and Figure 2, has cam of injection pump axle 1, cam of injection pump axle 1 includes cam of injection pump 2, the contained size of cam of injection pump 1 molded lines: main chord length L=38.5mm, each time arc radius R 1=14.25mm, R2=19.26mm, R3=24.25mm, corresponding angle α 1=12 ° 46 ', α 2=57 ° 54 ', α 3=42 °; In camshaft, each phase angle of cam of injection pump 1: keyway center line and cam of injection pump zero line angle α 4=19 ° 20 ', cam of injection pump zero line and 5=146 ° of intake cam symmetrical center line angle α, intake cam symmetrical center line and exhaust cam symmetrical center line α 6=107 ° 15 '.
By improving the molded lines of cam of injection pump, improve total lift of cam, thereby improved injection pressure, improved fogging degree, the rate of combustion of fuel oil; By changing the phase angle of the relative camshaft of cam of injection pump, adjust the angle of advanced opening of inlet and exhaust valve, closed angle, overlapping angle and injection advance angle late, optimized the work cycle of diesel engine.
The utility model low emission single-cylinder direct-injection diesel engine is meant the single-cylinder direct-injection diesel engine of cylinder bore at the 125-132 millimeter especially.
Claims (1)
1. low emission single-cylinder direct-injection diesel engine, has cam of injection pump axle (1), cam of injection pump axle (1) includes cam of injection pump (2), it is characterized in that: the contained size of described cam of injection pump (1) molded lines: main chord length L=38.5mm, each arc radius R 1=14.25mm, R2=19.26mm, R3=24.25mm, corresponding angle α 1=12 ° 46 ', α 2=57 ° 54 ', α 3=42 °; In camshaft, each phase angle of cam of injection pump (1): keyway center line and cam of injection pump zero line angle α 4=19 ° 20 ', cam of injection pump zero line and 5=146 ° of intake cam symmetrical center line angle α, intake cam symmetrical center line and exhaust cam symmetrical center line α 6=107 ° 15 '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920039482U CN201381897Y (en) | 2009-04-15 | 2009-04-15 | Single-cylinder direct injection diesel engine with low exhaust emissions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920039482U CN201381897Y (en) | 2009-04-15 | 2009-04-15 | Single-cylinder direct injection diesel engine with low exhaust emissions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201381897Y true CN201381897Y (en) | 2010-01-13 |
Family
ID=41525374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920039482U Expired - Fee Related CN201381897Y (en) | 2009-04-15 | 2009-04-15 | Single-cylinder direct injection diesel engine with low exhaust emissions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201381897Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240082A (en) * | 2015-10-31 | 2016-01-13 | 中国嘉陵工业股份有限公司（集团） | Motorcycle engine |
| CN105257355A (en) * | 2015-10-31 | 2016-01-20 | 中国嘉陵工业股份有限公司（集团） | Air inlet and exhaust cam structure of motorcycle engine |
| CN109339892A (en) * | 2018-11-28 | 2019-02-15 | 无锡凯奥动力机械有限公司 | Single-cylinder air-cooled diesel engine camshaft |
| CN109736914A (en) * | 2018-12-11 | 2019-05-10 | 江苏三能动力总成有限公司 | A kind of engine cam axle system |
-
2009
- 2009-04-15 CN CN200920039482U patent/CN201381897Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240082A (en) * | 2015-10-31 | 2016-01-13 | 中国嘉陵工业股份有限公司（集团） | Motorcycle engine |
| CN105257355A (en) * | 2015-10-31 | 2016-01-20 | 中国嘉陵工业股份有限公司（集团） | Air inlet and exhaust cam structure of motorcycle engine |
| CN109339892A (en) * | 2018-11-28 | 2019-02-15 | 无锡凯奥动力机械有限公司 | Single-cylinder air-cooled diesel engine camshaft |
| CN109736914A (en) * | 2018-12-11 | 2019-05-10 | 江苏三能动力总成有限公司 | A kind of engine cam axle system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20130415 |