Cylinder pressure adjuster of a motor

A crank device and an adjusting device of a combustion engine. The system adjusts the cylinder pressure of the motor in accordance with the required power. Adjustment of the cylinder pressure takes place by changing the compression ration by means of the adjusting device (19). The adjusting device (19) changes an eccentric wheel (3) through an adjusting wheel (4) to a such position that a connecting rod (2) lifts a piston (1) to a desired distance from the combustion chamber head. The adjusting device measures the volume of the air entering the cylinder and adjust the compression ratio to be appropriate. The adjusting device also takes into account the speed of rotation so that the compression pressure increases or decreases to be appropriate.

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention relates to a motor which comprises a motor compression pressure adjuster and wherein a connecting rod is provided extends from a piston of the motor toward a crank arm. The connecting rod is mounted via bearings to an eccentric wheel, and the eccentric wheel is provided with a gear ring. The gear ring is centered on the crank arm and the eccentric wheel is driven by an adjusting wheel.

2. Background of the Invention

In the known motors a connecting rod is mounted on bearings on a crank arm shaft. When a piston is in the top position the combustion chamber is the same in the entire rotation speed range. With short filling the compression pressure remains low resulting in substantially poor performance.

When the speed of rotation increases the combustion chamber increases relatively quicker than on low speeds. Because of this the pressure in the cylinder does not increase on a sufficiently high level and this decreases the power of the motor.

In conventional motors when the piston is in the upper dead centre the crank arm and the connecting rod are on the same line and the length of the lever is zero. Therefore the torque is also temporarily zero.

SUMMARY OF THE INVENTION

The invention aims to remove the above mentioned disadvantages and provide a motor which has substantially lower loss of thermal energy, increased output per liter and which decreases CO2 emissions about 38% compared to conventional motors.

This aim can be achieved in accordance with the invention by using a compression pressure adjuster and by it use an adjusting wheel4to adjust the position of an eccentric wheel on the crank arm shaft.

Gearwheels shall be dimensioned by means of the equation on page2. An eccentric wheel is mounted on bearings at the lower end of the connecting rod and in the crank arm. The eccentric wheel has a fixed gear ring3positioned centrally on the crank arm shaft. The gear ring3is driven by the adjusting wheel4. A computer and an adjusting device19move the adjusting wheel4to a position required by a sufficient cylinder pressure.

When the adjusting device19moves the adjusting wheel4counter clockwise the combustion chamber decreases and the pressure increases. Correspondingly, the pressure remains lower when the adjusting wheel is turned clockwise.

More particularly, the motor in accordance with the invention comprises a motor compression pressure adjuster and wherein a connecting rod is provided from a piston of the motor to the direction of a crank arm, the connecting rod being mounted by bearings to an eccentric wheel, wherein the eccentric wheel is provided with a gear ring that is centred on the crank arm and the eccentric wheel is driven by an adjusting wheel, and the eccentric wheel and adjusting wheel are dimensioned so that the radius of the crank arm+the rolling radius of the gear ring of the eccentric wheel=rolling radius of the adjusting wheel.

DETAILED DESCRIPTION

Part2of a motor is manufactured of metal so that it allows mounting of the crank shaft end thereof about an eccentric wheel12. A gear ring3centered on a crank journal6of the crank arm is fixed in the eccentric wheel12. The gear ring3of the eccentric wheel12is in contact with the gear ring of the adjusting wheel4.

The adjusting wheel4is mounted on the body of the motor such that it can be turned back and forth in the range of 0-30°. To turn the adjusting wheel4it is provided with a turning shoulder24to which a swinging arm22is attached.

The swinging arm22is fixed to a shaft18. Turning apparatus are attached to the shaft18for turning each adjusting gear ring.

The adjusting device19takes into account the speed of rotation, required power and filling ratio of the motor.

The eccentric wheel12rotates in a direction10opposite to the rotation15of the crank shaft17of the motor about axis14. The rolling radius ry of the gear ring3of the eccentric wheel12and the rolling radius Rs of the adjusting gear ring4are dimensioned such that Rs=R+rv=2.5×rv.

The moving wheel4of each cylinder is moved by shaft18and the therein fixed swinging arms22. By means of this the adjustment is provided simultaneously in each cylinder.

The system provides a greater angle11of the connecting rod2and9of the crank arm in the beginning of the combustion stroke thereby increasing the leverage arm. Further, and correspondingly, at the end of the combustion stroke it decreases the angle11of the connecting rod2and decreases the friction between the piston1and the cylinder wall30of the cylinder16.

In case of short filling the combustion chamber decreases and the distance to the fire front is shortened as is the time of fire. The shorter time of fire and greater compression ratio provide sufficiently high pressure in the cylinder.

In greater rotation speeds the cylinder pressure is increased by changing the compression ratio. The structure provides a greater piston speed and higher cylinder pressure during the combustion stroke. The combustion chamber increases rapidly and the pressure does not increase too much.

By changing the combustion chamber the pressure in the cylinder is adjusted to the knocking border and the temperature as high as the structure of the motor allows. The high temperature increases resistance to thermal conductivity and thereby losses in thermal energy can be decreased.