CN2653136Y

CN2653136Y - Pressure reducer for motorcycle engine

Info

Publication number: CN2653136Y
Application number: CN 03232772
Authority: CN
Inventors: 宋志平; 伍本银
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-09
Filing date: 2003-01-09
Publication date: 2004-11-03
Anticipated expiration: 2013-01-09

Abstract

An easing gear used for the engines of motorbikes is provided. Being arranged above a rocker arm controlling exhausting of an engine, the easing gear consists of a cam, a positioning base, a returning spring and a rotary control arm. The cam is fixed at one end of a cam shaft and presses on the top face of the rocker arm. The cam shaft is positioned in the positioning base and is able to rotate in and is sleeved with the returning spring. One end of the returning spring is fixed on the cam shaft and the other end is fixed on the positioning base to make the cam shaft return. The other end of the cam shaft is connected with the rotary control arm which is externally connected with a control system. The utility model has the advantages that an engine is able to start easily with a small starting current in case of a very small torque once the engine is internally provided with one easing gear, that the structure is simple and that the operations are flexible.

Description

The motorcycle engine decompressor

Technical field

The utility model belongs to the motorcycle engine technical field, is specifically related to a kind of decompression mechanism in engine that big compression ratio motorcycle engine starts difficulty that solves.

Technical background

The motorcycle engine compression ratio of some present large and medium-sized discharge capacities is big, and the torque of required starting is big, and therefore the electric energy that is consumed is also big.In order to address this problem, existing motor is provided with decompression valve on cylinder, and decompression valve is generally at the top of engine chamber, and motor is when work, and decompression valve is easy to generate carbon distribution, causes gas leakage, and the bad sealing of valve stem, complex process.

Summary of the invention

The utility model provides a kind of motorcycle engine decompressor at the prior art above shortcomings, by the one cover pressure reduction structure of design in motor, make and start function easily starting under the condition of less torque, starting current is little, and is simple in structure, goes slick.

The technical solution of the utility model is as follows:

The motorcycle engine decompressor, it is characterized in that this device is arranged on the rocking arm top of engine control exhaust, constitute by cam, positioning seat, return spring and rotation control arm, cam is pressed in the rocking arm top, camshaft is installed in the positioning seat, return spring is installed on the camshaft, and the end of camshaft connects rotates control arm, rotates the outer connection control system of control arm.

The working principle of this device: when starter motor is worked, rotate control arm with manual or electronic control system, cam is rotated to an angle, cam presses exhaust rocker arm downwards, the control exhaust rocker arm has very little LAP, make it return fully, can not produce pressure in the cylinder this moment, reaches effect of easing stress.Owing to do not have pressure in the cylinder, the magnetogenerator flywheel can produce inertia by high speed rotating, removes control then safely, makes cam pass through the return spring return, and the stroke of exhaust rocker arm recovers, and makes cylinder produce pressure, normal starting.

The advantage of this device is: this device can make motor starting like a cork under less torque, and required starting current is littler several times than original motor, and the power of engine charging system can reduce like this, to increase the useful horsepower of motor; The storage battery capacity also can reduce simultaneously, thereby alleviates the weight of car load configuration.Because the required starting torque of motor is little, speed reducer originally can omit, and therefore can also reduce the cost of motor.This apparatus structure is simple, and technological requirement does not have original decompression valve complexity, and it is more reliable to work.

Description of drawings

Fig. 1 is that this device is installed in the structural representation on the motor;

The working state figure of exhaust rocker arm this device when return state when Fig. 2 is engine operation;

The working state figure of exhaust rocker arm this device when decompression state when Fig. 3 is starter motor work.

Embodiment

Referring to Fig. 1, this device is arranged on rocking arm 1 top of engine control exhaust, is made of cam 2, positioning seat 3, return spring 4 and rotation control arm 5.Cam 2 is fixed on an end of camshaft 6, and is pressed in rocking arm 1 top.Camshaft 6 is installed in the positioning seat 3, and can rotate therein.Be with return spring 4 on the camshaft 6, an end of return spring 4 is fixed on the camshaft 6, and the other end is fixed on the positioning seat 3, so that camshaft 6 returns.The other end of camshaft 6 is connected with and rotates control arm 5, rotates control arm 5 outer connection control system.

Referring to Fig. 2, work as engine operation, when the rocking arm 1 of control exhaust was in the return state, the A face of the cam 2 of this device just in time leaned against rocking arm 1 surface, but can not exert pressure to rocking arm 1.Referring to Fig. 3, when starter motor is worked, the work of this device, rotate control arm 5 by control system, cam 2 is rotated to an angle, the B of cam 2 faces down and presses exhaust rocker arm 1, control exhaust rocker arm 1 has very little LAP, make it return fully, can not produce pressure in the cylinder this moment, reaches effect of easing stress.

Claims

1, motorcycle engine decompressor, it is characterized in that this device is arranged on the rocking arm top of engine control exhaust, be made of cam, positioning seat, return spring and rotation control arm, cam is fixed on an end of camshaft, and is pressed in the rocking arm top, camshaft is installed in the positioning seat, be with return spring on the camshaft, an end of return spring is fixed on the camshaft, and the other end is fixed on the positioning seat, the other end of camshaft is connected with the rotation control arm, rotates the outer connection control system of control arm.