CN2589685Y - Power lifted petrol engine - Google Patents
Power lifted petrol engine Download PDFInfo
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- CN2589685Y CN2589685Y CN 02245074 CN02245074U CN2589685Y CN 2589685 Y CN2589685 Y CN 2589685Y CN 02245074 CN02245074 CN 02245074 CN 02245074 U CN02245074 U CN 02245074U CN 2589685 Y CN2589685 Y CN 2589685Y
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Abstract
The utility model relates to a power increasing type gasoline engine. On the basis of 491Q type a multipoint electric spaying gasoline engine, the design that a cylinder cover low flow resistance air intake passage is used for increasing the flow area of an air intake valve is adopted, and the air intake aeration factor can be improved by 9.6 percents; the compression ratio can be raised by reducing the volume of a combustion chamber on the top part of a piston and reducing the volume of a combustion of the air cylinder cover; the rated speed of the gasoline engine can be improved, the air distribution phase angle of a camshaft can be optimized. With the adoption of the utility model, the power of the gasoline engine can be increased by about 15 percents.
Description
Technical field
The utility model relates to reciprocating piston type, four stroke engine, and particularly a kind of power ascension type petrol engine is the improvement of prior art.
Background technique
At present, 491Q type petrol engine is not design with reference to the Y series product 4Y petrol engine of Toyota the eighties, its structural type is reciprocating piston type, four-stroke, four cylinders, vertical, water-cooled in upright arrangement, non pressurized, Spark ignition type, fuel system has Carburetor, single-point EFI, multiple spot EFI, and bore/stroke is 91 * 86 millimeters, and valve is arranged as overhead, camshaft is configured to underneath type, sprocket wheel chain transmission, tappet are hydraulic type, and the firing chamber is half wedge shape.In recent years, because Abgasgesetz adds sternly, 491Q type petrol engine was modified as 491Q type single-point EFI, 491Q type multiple spot electronic injection gasoline engine from carburetor type, and its main performance index is respectively:
| Performance index | 491Q type single-point EFI | 491Q type multiple spot EFI |
| Rated power (kW) | 70 | 76 |
| Rated speed (r/min) | 4600 | 4600 |
| Peak torque (N.m) | 178 | 193 |
| Compression ratio | 8.8 | 8.8 |
| Discharge capacity | 2.237 | 2.237 |
| The air inlet volumetric efficiency | 0.83 | 0.85 |
| Power per liter (kW/L) | 31.3 | 33.4 |
Because the continuous increase of China's expressway, and the requirement of driving comfort improves constantly, power character to motor is had higher requirement, for example golden cup SY6470 light bus uses 491Q type multiple spot electronic injection gasoline engine also to feel to be short of power, on medium-to-high grade light bus, brought into use the 2RZ-E petrol engine of import 2.438 liter capacities, the power of this petrol engine is 88kW, bringing into use import 2.693 liter capacity 3RZ-E petrol engine aspect the high-grade light bus, the power of this petrol engine is 105kW, as seen, the alternative import petrol engine of power of raising 491Q type multiple spot electronic injection gasoline engine has great significance.
Summary of the invention
The purpose of this utility model is intended to overcome above-mentioned deficiency of the prior art, and is main by improving gas handling system, increases volumetric efficiency, increasing compression ratio and raising engine speed etc., thereby a kind of power ascension type petrol engine is provided.
Content of the present utility model is: a kind of power ascension type petrol engine, by cylinder block, cylinder head, the connecting rod that comprises piston, the gas distribution system that comprises camshaft, comprise suction valve, the suction valve seat ring, the air inlet system and exhaust system of suction valve conduit, electric control fuel oil jet system, the electronic control ignition system, lubrication system, component such as cooling system are formed, its structural type is a reciprocating piston type, four-stroke, four cylinders, in upright arrangement vertical, water-cooled, non pressurized, automatically controlled Spark ignition type, fuel system is the multiple spot electric-controlled injection, bore/stroke is 91 * 86 millimeters, valve is arranged as overhead, camshaft is configured to underneath type, the sprocket wheel chain transmission, tappet is a hydraulic type, the firing chamber is half wedge shape, and its feature part is:
The following molded lines (a) of the intake duct (8) of described cylinder head (2) is the circular arc of one section R58 ± 5, and last molded lines is three sections (b) R28 ± 5, (c) R175 ± 5 and (d) the slick and sly junction curve of circular arc of R130 ± 5;
The valve dish conical surface external diameter h of described suction valve (4) and the internal diameter of suction valve seat ring (1) are 41～46 millimeters;
Top combustion chamber (9) volume of described piston (6) is that 12～17 milliliters, firing chamber (10) volume of described cylinder head (2) are 38～43 milliliters, in order to compression ratio is brought up to 9.0 to 9.6.
In the utility model content: the port timing of described gas distribution system convexity wheel shaft (7) is: the IO Intake Valve Opens advance angle is that 15 °～20 °, IC Intake Valve Closes retardation angle are that 51 °～56 °, exhauxt valve opens advance angle are that 57 °～62 ° exhaust valve closing retardation angle are 13 °～18 °.
The rated engine speed of the described petrol engine of the utility model content is 4800r/min～5200r/min.
Compared with prior art, the utlity model has following characteristics:
(1) corrective measure of adopting low flow resistance intake duct and increasing the suction valve flow area, increased the air inlet volumetric efficiency of petrol engine, the model machine before and after improving is tested, the volumetric efficiency before improving is 0.83, volumetric efficiency after the improvement is 0.91, and volumetric efficiency has improved 9.6%.Thus, the increase of the increase of petrol engine volumetric efficiency decision air inflow, engine electric-controlled management system accurately calculates fuel injection amount according to the petrol engine air inflow, thereby has improved the power of motor;
(2) by reducing the piston head combustion chamber volume and reducing cylinder head combustion chamber volume, compression ratio is brought up to 9.4 to 9.6 by original 8.8, can improve maximum temperature in the cylinder, enlarge circuit temperature ladder, increase the expansion ratio of motor, thereby improve the thermal efficiency of cycle of motor, improve the power character of motor, reduce minimum specific fuel consumption;
(3) under the certain condition of mechanical efficiency, the rotating speed of motor is directly proportional with power, and the rated engine speed of motor is brought up to 5100r/min from 4600r/min, therefore, the camshaft timing angle is redesigned;
(4) behind employing the utility model, the model machine of making is carried out experimental test, compares with the petrol engine after the improvement before improving, compression ratio is 9.4 o'clock, and power has reached 85kW; Compression ratio is 9.6 o'clock, and power has reached 88kW, and maximum has improved 15.8%, join car after, discharging pollutants of car load reaches European II emission standard.This shows that the raising of this petrol engine power is the desirable mating power of the light-duty medium-to-high grade automobile of China, can replace the import petrol engine of close power.
Description of drawings
Fig. 1 is the utility model improved utilization embodiment's on 491Q type multiple spot electronic injection gasoline engine a structural representation;
Fig. 2 is the cross-sectional view of the intake duct and the suction valve of the utility model cylinder head;
Fig. 3 is the utility model piston head firing chamber cross-sectional view;
Fig. 4 is the firing chamber cross-sectional view of the utility model cylinder head.
Among the figure: 1-suction valve seat ring, 2-cylinder head, 3-suction valve conduit, 4-suction valve, 5-intake manifold, 6-piston, 7-camshaft, 8-cylinder head intake duct, 9-piston head firing chamber, 10-head combustion chamber.
Embodiment
Referring to each accompanying drawing.A kind of on 491Q multiple spot electronic injection gasoline engine improved power ascension type petrol engine, by cylinder block, cylinder head 2, the connecting rod that comprises piston 6, the gas distribution system that comprises camshaft 7, comprise suction valve 4, suction valve seat ring 1, the air inlet system and exhaust system of suction valve conduit 3, electric control fuel oil jet system, the electronic control ignition system, lubrication system, component such as cooling system are formed, its structural type is a reciprocating piston type, four-stroke, four cylinders, in upright arrangement vertical, water-cooled, non pressurized, automatically controlled Spark ignition type, fuel system is the multiple spot electric-controlled injection, bore/stroke is 91 * 86 millimeters, valve is arranged as overhead, camshaft is configured to underneath type, the sprocket wheel chain transmission, tappet is a hydraulic type, and the firing chamber is half wedge shape;
The following molded lines (a) of the intake duct 8 of described cylinder head 2 is the circular arc of one section R58 ± 5, and last molded lines is three sections (b) R28 ± 5, (c) R175 ± 5 and (d) the slick and sly junction curve of circular arc of R130 ± 5;
The valve dish conical surface external diameter h of described suction valve 4 and the internal diameter of suction valve seat ring 1 are 41～46 millimeters;
The volume of the top combustion chamber 9 of described piston 6 is that 12～17 milliliters, firing chamber 10 volumes of described cylinder head 2 are 38～43 milliliters, in order to improve compression ratio;
The port timing of described gas distribution system convexity wheel shaft (7) is: the IO Intake Valve Opens advance angle is that 15 °～20 °, IC Intake Valve Closes retardation angle are that 51 °～56 °, exhauxt valve opens advance angle are that 57 °～62 °, exhaust valve closing retardation angle are 13 °～18 °.
The rated engine speed of this petrol engine is 4800r/min～5200r/min.
This embodiment's main performance index is respectively:
| Performance index | The single-point EFI | The multiple spot EFI |
| Rated power (kW) | 80 | 85 |
| Rated speed (r/min) | 5100 | 5100 |
| Peak torque (N.m) | 182 | 195 |
| Compression ratio | 9.4 | 9.4 |
| Discharge capacity | 2.237 | 2.237 |
| The air inlet volumetric efficiency | 0.86 | 0.91 |
| Power per liter (kW/L) | 35.8 | 38 |
The utility model is not limited to the foregoing description, and the utility model content is described all can be implemented, and has described good result.
Claims (3)
1. power ascension type petrol engine, by cylinder block, cylinder head, the connecting rod that comprises piston, the gas distribution system that comprises camshaft, comprise suction valve, the suction valve seat ring, the air inlet system and exhaust system of suction valve conduit, electric control fuel oil jet system, the electronic control ignition system, lubrication system, component such as cooling system are formed, its structural type is a reciprocating piston type, four-stroke, four cylinders, in upright arrangement vertical, water-cooled, non pressurized, automatically controlled Spark ignition type, fuel system is the multiple spot electric-controlled injection, bore/stroke is 91 * 86 millimeters, valve is arranged as overhead, camshaft is configured to underneath type, the sprocket wheel chain transmission, tappet is a hydraulic type, the firing chamber is half wedge shape, it is characterized in that:
The following molded lines (a) of the intake duct (8) of described cylinder head (2) is the circular arc of one section R58 ± 5, and last molded lines is three sections (b) R28 ± 5, (c) R175 ± 5 and (d) the slick and sly junction curve of circular arc of R130 ± 5;
The valve dish conical surface external diameter h of described suction valve (4) and the internal diameter of suction valve seat ring (1) are 41～46 millimeters;
Top combustion chamber (9) volume of described piston (6) is that 12～17 milliliters, firing chamber (10) volume of described cylinder head (2) are 38～43 milliliters.
2, power ascension type petrol engine according to claim 1, it is characterized in that: the port timing of described gas distribution system convexity wheel shaft (7) is: the IO Intake Valve Opens advance angle is that 15 °～20 °, IC Intake Valve Closes retardation angle are that 51 °～56 °, exhauxt valve opens advance angle are that 57 °～62 °, exhaust valve closing retardation angle are 13 °～18 °.
3, power ascension type petrol engine according to claim 1, it is characterized in that: the rated engine speed of described petrol engine is 4800r/min～5200r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02245074 CN2589685Y (en) | 2002-12-09 | 2002-12-09 | Power lifted petrol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02245074 CN2589685Y (en) | 2002-12-09 | 2002-12-09 | Power lifted petrol engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2589685Y true CN2589685Y (en) | 2003-12-03 |
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ID=33716801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02245074 Expired - Fee Related CN2589685Y (en) | 2002-12-09 | 2002-12-09 | Power lifted petrol engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2589685Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102549254A (en) * | 2010-09-27 | 2012-07-04 | 丰田自动车株式会社 | Cylinder head |
| CN101424199B (en) * | 2007-10-31 | 2012-07-18 | 本田技研工业株式会社 | Engine for small vehicle |
| CN109944657A (en) * | 2017-12-20 | 2019-06-28 | 现代自动车株式会社 | With the engine for minimizing heat transfer structure |
-
2002
- 2002-12-09 CN CN 02245074 patent/CN2589685Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424199B (en) * | 2007-10-31 | 2012-07-18 | 本田技研工业株式会社 | Engine for small vehicle |
| CN102549254A (en) * | 2010-09-27 | 2012-07-04 | 丰田自动车株式会社 | Cylinder head |
| CN102549254B (en) * | 2010-09-27 | 2014-08-06 | 丰田自动车株式会社 | Cylinder head |
| CN109944657A (en) * | 2017-12-20 | 2019-06-28 | 现代自动车株式会社 | With the engine for minimizing heat transfer structure |
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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: 20031203 Termination date: 20100111 |