CN102777260A

CN102777260A - Engine with dead center changing according to phase

Info

Publication number: CN102777260A
Application number: CN201110134407XA
Authority: CN
Inventors: 任军
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-12
Filing date: 2011-05-12
Publication date: 2012-11-14

Abstract

The invention relates to an engine with a dead center changing according to a phase, which has the advantages that oil consumption and emissions are can reduced and the power performance is improved. Five processes of a cycle can be made close to a theoretical cycle.

Description

Stop is by the motor of phase change

The present invention relates to a kind of engine performance device, especially can reduce oil consumption, reduce exhaust pollution, improve the motor of the stop of power performance by phase change.

At present, known internal combustion engine moving force transmission mechanism is to be connected in series by bent axle, connecting rod, piston; The dead-centre position of piston and each running length are constant, and the internal combustion engine circulation requires: gettering efficiency is high, and compression consumes few; Burning thoroughly; Work done is abundant, and exhaust is complete, the qualified discharge rotating speed is low, and known reciprocal four-stroke internal combustion engine can not reach.

The purpose of this invention is to provide a kind ofly, stop is by the motor of phase change, and it can make five processes of internal-combustion engine thermodynamic cycle near theoretical circulation, reaches to reduce oil consumption, blowdown, increase power performance.

The objective of the invention is (is example with the petrol engine) as shown in Figure 1 of realization like this; At the rod journal of power transmission mechanism bent axle with during connecting rod is connected; A phase place eccentric bushing is installed, and the trepanning of phase place eccentric bushing is connected with the rod journal of bent axle, and the eccentric outer neck of phase place eccentric bushing is connected with connecting rod; When the masterpiece of connecting rod 3, connecting rod 4 is used for the phase place eccentric bushing that throw of eccentric is r; The eccentric journal axis of phase place eccentric bushing rotates around the rod journal of bent axle, and connnecting rod big end rotates with the eccentric journal of phase place eccentric bushing, and does the turnover motion around the rod journal of bent axle.Also both connnecting rod big end not only around the eccentric journal rotation of phase place eccentric bushing but also around the rod journal revolution of bent axle; Because the to-and-fro motion of piston; Thereby the length alternate of the stop of each stroke and stroke on P-V figure shown in Figure 1, (among the figure mechanism with the fuel oil test-run a machine start, running, moving, steady state condition is normal).Then 1, suction stroke: intake efficiency is increased to 97% by 84%, increases by 1% by volumetric efficiency, and power increases by 3%, and volumetric efficiency improves 13%, and power improves 39% and calculates, mechanical efficiency then, and power performance increases.2, compression stroke: to reduce to the gas of 0.3%, 3 atom by 10% few for coefficient of residual gas in the working medium, and compression initial stage working medium temperature is low, makes its compressed lines gradient big, compression index >=1.39, and wasted work is few.3; Combustion process: residual gas occupies 0.3% in working medium before igniting, and the air fuel ratio of all operating modes can be in >=14.7/1 burning, and combustion efficiency is by known 60%-98%; Bring up to 95%-99%, the qualified discharge rotating speed drops to 200 rev/mins by known 800 rev/mins.4, expansion stroke: how much expansion ratios are greater than 1 of geometrical compression ratio, and the comprehensive air fuel ratio of working medium is big, and cycle index is big, and work done usefulness strengthens.5, exhaust stroke: exhaust is complete, and the heat that looses to cooling system is reduced, and it is few to be by fan power that 3.75 powers of engine radiating rate calculate the fan wasted work.

In the exhaust NOx low be since igniting when opening combustion the working medium temperature low, the working medium rerum natura makes velocity of combustion fast.

HC is low to be that the firing chamber does not have quench area.

CO is low to be all operating mode excess air coefficient >=1.

Owing to adopt such scheme, can improve 5 processes of circuit, make its rate of fuel consumption, blowdown reduces, and power performance improves, and only increases the phase place eccentric bushing between bent axle, the connecting rod, and the weight/power ratio cost is low.

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is a fundamental diagram of the present invention.

Fig. 2 is phase place eccentric bushing, the bent axle of stop by first embodiment of motor of phase change, the vertical profile apparent structure figure of connecting rod.

Fig. 3 is the A-A sectional view of Fig. 2.

Fig. 4 is second embodiment's a longitudinal section.

Fig. 5 is the B-B sectional view of Fig. 4.

Fig. 6 is the I enlarged view of Fig. 5.

Among the figure 1, the phase place eccentric bushing, 2, the rod journal of bolt, 3, connecting rod, 4, connecting rod, 5, bent axle.

In Fig. 1, the rod journal of bent axle (5) is connected with the cover interporal lacuna of phase place eccentric bushing (1), and connecting rod (3), connecting rod (4) are connected with the eccentric outer collar crack of phase place eccentric bushing (1).

In the embodiment shown in Figure 2, the body structure of the rod journal of bent axle (5) is built connection for the circular cone flower, and the body configuration of phase place eccentric bushing (1) is an overall structure, and the major part body configuration of connecting rod (3), connecting rod (4) is an overall structure.

In another embodiment shown in Figure 4, the body configuration of the rod journal of bent axle (5) is an overall structure, and the body configuration of phase place eccentric bushing (1) is for dividing body structure, and the body configuration of connecting rod (3), connecting rod (4) major part is for dividing body structure.

It is greatly good that motor is generally got pressure ratio, is applicable to reciprocal four-stroke internal combustion engine.

Claims

1. stop is by the motor of phase change, not supercharging, in cold circulation, it is characterized in that: intake efficiency is high, compression consumes few, burning thoroughly, work done is abundant, exhaust is complete, disposal of pollutants is few.

2. according to the described method of claim 1, it is characterized in that intake efficiency is 96%-98%.

3. according to the described method of claim 1, it is characterized in that compression index >=1.39.

4. according to the described method of claim 1, it is characterized in that combustion efficiency is 95%-99%.

5. according to the described method of claim 1, it is characterized in that how much expansion ratios are greater than 1 of geometrical compression ratio.

6. method according to claim 1 is characterized in that the exhaust coefficient of residual gas that is over is 0.6%-0.2%.

7. according to the described method of claim 1, it is characterized in that the qualified discharge rotating speed is 200 rev/mins-150 rev/mins.