CN202266307U

CN202266307U - Gas distribution cam shaft for gasoline engine

Info

Publication number: CN202266307U
Application number: CN2011204037666U
Authority: CN
Inventors: 陶永文
Original assignee: CHONGQING JINQIAO MACHINE MANUFACTURING CO LTD
Current assignee: CHONGQING JINQIAO MACHINE MANUFACTURING CO LTD
Priority date: 2011-10-21
Filing date: 2011-10-21
Publication date: 2012-06-06
Anticipated expiration: 2021-10-21

Abstract

The utility model discloses a gas distribution cam shaft for a gasoline engine. The gas distribution cam shaft comprises gas inlet cams (2) and gas outlet cams (1) which are fixedly arranged on the cam shaft. Lift parameters of each gas outlet cam (1) and gas inlet cam (2) are improved to improve the power and torque of an engine at 5500 rpm (Revolutions per Minute), so that low-speed large torque of the engine is achieved.

Description

A kind of petrol engine distribution cam axle

Technical field

The utility model relates to a kind of camshaft, particularly a kind of petrol engine distribution cam axle.

Background technique

Valve cam that the intake and exhaust of internal-combustion engine are used and molded lines thereof; Be related to the combustion noise of cam fullness coefficient, inflation performance, internal-combustion engine output power, torque output of combustion engine, oil consumption, internal-combustion engine and the vibrations of motor etc., and directly determine the fuel oil whether composition of harmful gas and concentration etc. in sufficient combustion, the exhaust emissions.Along with the raising of environmental consciousness and country adopt the exhaust emission standard of higher strictness,, the overall performance of internal-combustion engine there is requirement further like the Europe III of automobile, motorcycle etc., the popularization and the mandatory adoption of Europe IV emission standard.

125 type single cylinder motorcycle gasoline engines of the prior art are 2 air valve engines, and the discharge capacity of motor is 125 ml, and the exhaust cam maximum lift of camshaft is 6.363mm, and the intake cam maximum lift is 6.532mm; Wherein, when engine speed reached 9000rpm, peak output was 8.1KW; During 5500rpm, power is 4.7 KW; When engine speed was 7500rpm, Maximum Torque was 9.4N.m; During 5500rpm, Maximum Torque is 8.2N.m.Generally speaking, motorcycle is 40-70 kilometer/hour in the speed of travels down, at this moment engine speed 5000-8000 rev/min, and not good like power and moment of torsion that this moment, motor provided, motorcycle will go unable.

The model utility content

The purpose of the utility model just provide a kind of motor when rotating speed 5500 rpm power more than the 6KW, the distribution cam axle of moment of torsion more than 10.5 N.m.

The purpose of the utility model is to realize that through such technological scheme a kind of petrol engine distribution cam axle comprises the intake cam and the exhaust cam that are fixedly installed on the camshaft, said exhaust cam rotate a circle lift such as following table:

Angle (°)	Lift range value (mm)	Angle (°)	Lift range value (mm)	Angle (°)	Lift range value (mm)	Angle (°)	Lift range value (mm)
								0	0.000	95	0.1271	185	6.3768	275	0.000
5	0.000	100	0.1627	190	6.0444	280	0.000
								10	0.000	105	0.2018	195	5.4341	285	0.000
15	0.000	110	0.2597	200	4.509	290	0.000
								20	0.000	115	0.3656	205	3.4286	295	0.000
25	0.000	120	0.5454	210	2.4958	300	0.000
								30	0.000	125	0.8155	215	1.7687	305	0.000
35	0.000	130	1.1888	220	1.2118	310	0.000
								40	0.000	135	1.6775	225	0.7978	315	0.000
45	0.000	140	2.2874	230	0.5064	320	0.000
								50	0.000	145	3.0125	235	0.3169	325	0.000
55	0.000	150	3.8033	240	0.2067	330	0.000
								60	0.000	155	4.5534	245	0.1471	335	0.000
65	0.000	160	5.2071	250	0.1012	340	0.000
								70	0.000	165	5.7391	255	0.0540	345	0.000
75	0.000	170	6.1398	260	0.0102	350	0.000
								80	0.0147	175	6.3962	265	0.000	355	0.000
85	0.0524	180	6.4846	270	0.000	360	0.000
								90	0.0905	?	?	?	?	?	?

Said intake cam rotate a circle lift such as following table:

Angle (°)	Lift range value (mm)	Angle (°)	Lift range value (mm)	Angle (°)	Lift range value (mm)	Angle (°)	Lift range value (mm)
								0	0.000	95	0.0896	185	6.4546	275	0.0523
5	0.000	100	0.1282	190	6.162	280	0.0137
								10	0.000	105	0.1659	195	5.7173	285	0.000
15	0.000	110	0.2025	200	5.1489	290	0.000
								20	0.000	115	0.2451	205	4.4782	295	0.000
25	0.000	120	0.3131	210	3.7283	300	0.000
								30	0.000	125	0.4304	215	2.9482	305	0.000
35	0.000	130	0.6204	220	2.2405	310	0.000
								40	0.000	135	0.905	225	1.6472	315	0.000
45	0.000	140	1.3059	230	1.1714	320	0.000
								50	0.000	145	1.8451	235	0.8067	325	0.000
55	0.000	150	2.55	240	0.5419	330	0.000
								60	0.000	155	3.4519	245	0.365	335	0.000
65	0.000	160	4.5273	250	0.2595	340	0.000
								70	0.000	165	5.4684	255	0.2012	345	0.000
75	0.000	170	6.1085	260	0.1625	350	0.000
								80	0.000	175	6.4619	265	0.1256	355	0.000
85	0.0125	180	6.5659	270	0.0889	360	0.000
								90	0.0504	?	?	?	?	?	?

Owing to adopted technique scheme, the utlity model has following advantage: adopt the camshaft of the utility model, power and moment of torsion when having improved motor 5500rpm have been realized the low-speed big of motor.

Description of drawings

Fig. 1 is the utility model embodiment 1 a plan view.

Embodiment

Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation; But the utility model is not limited to these mode of executions; Any on the present embodiment essence spirit improvement or substitute, still belong to the utility model claim scope required for protection.

Embodiment 1: do further description below in conjunction with 1 pair of the utility model of accompanying drawing:

A kind of petrol engine distribution cam axle comprises that the air inlet that is fixedly installed on the camshaft protruding 2 takes turns and exhaust cam 1, said exhaust cam 1 rotate a circle lift such as following table:

Intake cam 2 circle lift such as following table:

Camshaft after improving is increased the lift section of valve except that basic circle, improves the top speed and the acceleration of valve micro-ly.The cam maximum lift is increased 0.05-0.10mm, and cam fullness coefficient, inflation performance are improved.The maximum lift of the exhaust cam of distribution cam axle is 6.4846mm, and the maximum lift of intake cam is 5.5659mm.The engine speed of using the utility model camshaft is during as 8500rpm, and peak output is 8.95KW, and during 5500rpm, power is 6.4 KW; When engine speed was 6500rpm, Maximum Torque was 11.5N.m, was 11.1N.m during 5500rpm.

Claims

1. a petrol engine distribution cam axle comprises the intake cam (2) and the exhaust cam (1) that are fixedly installed on the camshaft, it is characterized in that said exhaust cam (1) rotate a circle lift such as following table:

。

2. petrol engine distribution cam axle according to claim 1 is characterized in that, said intake cam (2) rotate a circle lift such as following table:

。