CN2440948Y

CN2440948Y - IC engine

Info

Publication number: CN2440948Y
Application number: CN 00239432
Authority: CN
Inventors: 林若沙
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-13
Filing date: 2000-09-13
Publication date: 2001-08-01
Anticipated expiration: 2010-09-13

Abstract

The utility model relates to an internal-combustion engine, which comprises a cylinder, a cylinder cap and a crank piston mechanism. A fuel gas compressor is arranged on an air inlet channel. When the crank piston mechanism works in the cylinder and a piston reaches an upper dead point, the top surface of the piston and the bottom surface of the cylinder cap are approximately gapless; thus, the volume of a combustion chamber dispenses with being obligated. The compression process of fuel gas is finished by the fuel gas compressor; the air inlet and the doing work processes are finished in one stroke of the piston. Waste gas after combusted can be completely discharged out of the cylinder; therefore, the air exchange quality is good; the combustion conditions of the internal-combustion engine can be remarkably improved; the fuel consumption rate and the sewage discharging quantity can be decreased. Because fuel gas enters the cylinder under high pressure and no residual waste gas heats fresh gas, the air charging coefficients of the internal-combustion engine is good for being enhanced.

Description

A kind of internal-combustion engine

The utility model relates to a kind of internal-combustion engine.

No matter internal-combustion engine now is petrol engine or diesel engine, no matter be two stroke machine or four-stroke machines, whether attach pressurized machine is arranged, the compression process of its inflammable gas is all mainly finished in cylinder, include cylinder on its structure of internal-combustion engine, cylinder head and crank piston mechanism, the piston of crank piston mechanism is commute motion up and down in cylinder, when the piston arrives top dead center, the bottom surface of piston-top surface and cylinder head general all left certain space, it is combustion chamber volume, make waste gas after burning can't discharge cylinder fully, thereby the combustion efficiency that has influenced inflammable gas improve and has increased discharge of harmful gases in the waste gas.

The purpose of this utility model just provides a kind of internal-combustion engine that waste gas after burning can be discharged fully cylinder that has.

To achieve the above object of the invention, internal-combustion engine of the present utility model comprises cylinder and crank piston mechanism, cylinder cap is arranged on the cylinder, spark plug is housed on the cylinder cap, is processed with the inlet and outlet road, the inlet and outlet door is housed on the inlet and outlet road, it is characterized in that: on the intake duct before described intake valve gas compressor is housed; Described crank piston mechanism is worked in cylinder when piston reaches top dead center, the gap of piston-top surface and cylinder cap bottom surface zero to 3 millimeters between, according to type, watt level difference and value even be similar to no gap between piston-top surface and the cylinder cap bottom surface, need not to reserve combustion chamber volume; In addition, the gas pressure compression process is concentrated by subsidiary gas compressor fully finished, the air inlet of cylinder and work done process are finished in a stroke of piston, so a work cycle of internal-combustion engine is finished in two strokes of piston.

After having taked above-mentioned technical measures, internal-combustion engine of the present utility model, its combustion vapour pressure compression process is finished by subsidiary gas compressor fully, and from theory, it can discharge cylinder fully with burning back waste gas, therefore its ventilation quality is not only good than two stroke machines, and it is better than four-stroke machine, also therefore can improve the combustion condition of internal combustion significantly, thereby effectively raise combustion efficiency, reduced fuel consumption rate and blowdown flow rate, and because combustion gas is under high pressure to enter in the cylinder, do not have the heat effect of remaining waste gas simultaneously, help improving the qi of chong channel ascending adversely coefficient of internal-combustion engine virgin gas.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is the cross-sectional schematic when piston reaches top dead center;

The end intake process enters that view constantly of expansion space stroke to Fig. 2 in the stroke in order to move downward when piston;

Fig. 3 is the cross-sectional schematic when piston reaches lower dead center;

As can be seen from FIG., internal-combustion engine of the present utility model comprises cylinder 1 and crank piston mechanism 2, cylinder cap 3 is arranged on the cylinder 1, spark plug 4 is housed on the cylinder cap 3, is processed with inlet and

outlet road

5,6, inlet and

outlet door

7,8 is housed on the inlet and outlet road, on the intake duct 5 before intake valve 7 gas compressor 9 is housed.When design, just make crank piston mechanism 2 in cylinder 1, work when piston 10 reaches top dead center, the gap of piston-top surface and cylinder cap bottom surface is as far as possible little, as long as both do not collide, and need not to reserve combustion chamber volume; In addition, the gas pressure compression process is concentrated by subsidiary gas compressor 9 fully finished, the air inlet of cylinder and work done process are finished in a stroke of piston, and a work cycle of internal-combustion engine is finished in two strokes of piston.

Present embodiment is got the gap between 0.01 to 0.3 millimeter.Certainly, be zero better if can accomplish the gap.

Its working procedure is as follows: at first stroke, piston is begun to move downward by top dead center, and this moment, intake valve was opened, and is entered in the cylinder by precompressed inflammable gas, till piston head arrives A point as shown in Figure 2; IC Intake Valve Closes, spark plug move, light inflammable gas afterwards, and the inflammable gas burning promotes piston and continues to move downward, and enters expansion space stroke; At second stroke, piston then begin to move upward, exhaust valve was opened and was entered exhaust process this moment, and till piston returned the top dead center exhaust valve closing, so far internal-combustion engine had been finished a complete work cycle.Can find out from working procedure, internal-combustion engine of the present utility model, a work cycle is finished in 360 ° of crankshaft rotating, two strokes of piston, therefore when cylinder number, cylinder bore, piston stroke, when rotating speed is identical, the power that it sends can reach the twice of four-stroke machine in theory.

Claims

1, a kind of internal-combustion engine, comprise cylinder and crank piston mechanism, cylinder cap is arranged on the cylinder, spark plug is housed on the cylinder cap, is processed with the inlet and outlet road, the inlet and outlet door is arranged on the inlet and outlet road, it is characterized in that: on the intake duct before described intake valve gas compressor is housed; When the piston of described crank piston mechanism reached top dead center in cylinder, the gap of piston-top surface and cylinder cap bottom surface was between 0 to 3 millimeter.

2, internal-combustion engine according to claim 1 is characterized in that: described gap is zero.

3, internal-combustion engine according to claim 1 is characterized in that: described gap is between 0.01 to 0.3 millimeter.

4, internal-combustion engine according to claim 1 is characterized in that: air inlet and work done process are finished in a stroke of piston.