CN101403351B

CN101403351B - Engine energy-saving apparatus with exhaust gas recirculation function

Info

Publication number: CN101403351B
Application number: CN200810219107XA
Authority: CN
Inventors: 冯子光
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-14
Filing date: 2008-11-14
Publication date: 2012-05-23
Anticipated expiration: 2028-11-14
Also published as: CN101403351A

Abstract

The invention discloses an energy-saving device for an engine with the function of exhaust gas recirculation, comprising a casing which is provided with an air inlet and an air outlet, the incision of the air outlet forms a front nozzle, a piston device is sheathed in the casing, and the casing or the piston device is provided with vent holes. When the exhaust gas during the work of the engine is pressed to the piston device from the air inlet, the exhaust gas is discharged from the air outlet, the piston device moves back and forth in the casing when being extruded by exhaust gas pressure, so as to push part of the exhaust gas into an engine cylinder again; through the process, the exhaust gas flow of the exhaust pipe can be controlled to change in accordance with the working conditions of the engine, thus leading the exhaust gas pressure of the engine to be kept in a specified average range and part of the exhaust gas caused by burning to be pressed back to the cylinder from an exhaust valve for exhaust gas recirculation.

Description

Energy-saving device for engine with exhaust gas recirculation function

Technical field

The present invention relates to a kind of energy-saving device for engine that is installed on the engine exhaust pipe with exhaust gas recirculation function.

Background technique

The exhaust pressure that present available engine is produced when work is different variation of rotating speed operating mode with motor; Because consistent the making of the bore of the discharging mouth of pipe can not provide average exhaust pressure; Thereby, a comparatively average exhaust pressure makes motor energy-conserving and environment-protective more in the course of the work and can making part waste gas behind the engine combustion pushed back the effect that cylinder plays the waste gas circulation utilization; Can greatly reduce simultaneously the temperature of combustion gas; Reduce discharge noise, prolong the working life of moving element in the motor.So a lot of auto vendors are the active development EGR Technology all; But it is comparatively complicated to address this problem used modular construction at present, and because of unreasonable structure, parts are generally not long working life; Also need be equipped with complicated control system simultaneously; Technical costs is corresponding to be increased, so technological scheme can not be popularized just utilization to some extent on high-grade Motor Vehicle.

Summary of the invention

In order to overcome the deficiency of existing technology, the present invention provides a kind of simple and reasonable for structure, energy-saving device for engine with exhaust gas recirculation function that cost of production is low.

The technical solution adopted for the present invention to solve the technical problems is:

Have the energy-saving device for engine of exhaust gas recirculation function, comprise sleeve pipe, said sleeve pipe is provided with suction port and relief opening, and the incision of this relief opening forms the preceding mouth of pipe, is positioned at sleeve pipe and is set with piston apparatus, has air outlet hole on said sleeve pipe or the piston apparatus.

In the present invention, said piston apparatus comprises the fitting seat that is socketed in the sleeve pipe rear end, the flexible rod that interts fitting seat and the piston sheet that is arranged on the flexible rod front end; When flexible rod is in the normal state following time, the piston sheet is the preceding mouth of pipe sealing of relief opening below or semiclosed, is positioned on the flexible rod or internal surface of sleeve pipe is provided with catch, also has air outlet hole on the said fitting seat.

As one embodiment of the present invention; Said flexible rod comprises the body of rod that runs through fitting seat; On the body of rod, be fixed with piston sheet and catch respectively; The said body of rod is positioned at catch rear end fixed cover outward the body shorter than the body of rod is housed, and the caliber of said body is bigger than the opening on the fitting seat that the body of rod passed, and outside body, between catch and fitting seat, is set with spring.

As another embodiment of the invention; Said flexible rod comprises and interts the set catch of internal surface of sleeve pipe and the body of rod of fitting seat; Be fixed with the piston sheet at lever front end, the said body of rod is provided with bulge loop, outside the body of rod, between bulge loop and fitting seat, is set with spring.

In the present invention, said body of rod rear end is provided with the adjusting nut of regulating piston sheet initial opening.

The invention has the beneficial effects as follows: the waste gas of being discharged when motor acting is when suction port is stamped on the piston apparatus; Waste gas is discharged from relief opening; Thereby piston apparatus receives exhaust gas pressure and is squeezed in the waste gas of will part discharging that seesaws in the sleeve pipe and is pushed in the engine cylinder once more; Can control the extraction flow change of outlet pipe according to the operating mode of motor through said process; The exhaust pressure of motor is remained in the average specified scope always, make the part waste gas after the burning push back the effect that cylinder plays exhaust gas recirculation, and apparatus structure of the present invention is simple, with low cost from exhaust valve; Need not control system control; Can on all waste pipes, install, and long service life, the advantage that can reach energy-conserving and environment-protective easy to install and use with improve power-lift power and reduce exhaust noise and the purpose of mechanicalness noise.

Description of drawings

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

Fig. 1 is the structural representation under first kind of mode of execution normality of the present invention;

Structural representation when Fig. 2 is first kind of mode of execution flexible rod contraction of the present invention;

Fig. 3 is the structural representation under second kind of mode of execution normality of the present invention;

Structural representation when Fig. 4 is second kind of mode of execution flexible rod contraction of the present invention.

Embodiment

With reference to Fig. 1, Fig. 2; Energy-saving device for engine with exhaust gas recirculation function; Comprise sleeve pipe 1, said sleeve pipe 1 is provided with suction port 8 and relief opening 2, and the incision of this relief opening 2 forms the preceding mouth of pipe 11; Be positioned at sleeve pipe 1 and be set with piston apparatus 3, said piston apparatus 3 comprises the fitting seat 4 that is socketed in sleeve pipe 1 rear end, the flexible rod 5 that interts fitting seat 4 and the piston sheet 6 that is arranged on flexible rod 5 front ends; When flexible rod 5 is in the normal state following time, piston sheet 6 is the preceding mouth of pipe 11 sealings or semiclosed of relief opening 2 belows, is positioned on the flexible rod 5 or sleeve pipe 1 inwall is provided with catch 7, also has air outlet hole 41 on the said fitting seat 4.

As first kind of mode of execution of the present invention; Said flexible rod 5 comprises the body of rod 51 that runs through fitting seat 4; On the body of rod 51, be fixed with piston sheet 6 and catch 7 respectively; The said body of rod 51 is outer to be positioned at catch 7 rear end fixed covers the body 52 shorter than the body of rod 51 is housed, and the opening on the fitting seat 4 that the caliber of said body 52 is passed than the body of rod 51 is big, outside body 52, between catch 7 and fitting seat 4, is set with spring 9.

The waste gas that motor acting is discharged is stamped into 6 last times of piston sheet through suction port 8; Piston sheet 6 receive exhaust gas pressure extruding back make with one of which with being fixed on the catch 7 stressed and extrusion springs 9 on the body of rod 51; Open relief opening 2; Part waste gas is discharged from relief opening 2, and the exhaust pressure of the control motor of the rolling average through piston sheet 6 remains in the scope of an appointment always simultaneously, makes the part waste gas after the burning push back the purpose that cylinder reaches exhaust gas recirculation from exhaust valve; In the design process of product, be provided with the length of body 52 shorter than the body of rod 51, the opening on the fitting seat 4 that passed than the body of rod 51 of the caliber of body 52 is big simultaneously, the deformation degree that can come control spring 9 like this through the length of body 52.Having air outlet hole 41 on the fitting seat 4 can let the air that enters into sleeve pipe 1 discharge.Apparatus structure of the present invention is simple, with low cost, need not control system control, can on all waste pipes, install, and long service life; Can reach easy to install and use, the advantage of energy-conserving and environment-protective is improved power; Hoisting power also reduces exhaust noise and the Engine Mechanical noise, and part waste gas pushes back cylinder through exhaust valve, utilizes the waste gas after-heat; Make the inflammable mixture heat absorption that gets into cylinder make the fuel oil gaseous state that fully volatilizees, make burning more abundant, reduce carbon monoxide content; Utilize the waste gas stay cylinder to absorb the heat that burning is next time produced on the other hand, make waste gas expansions of absorbing heat once more, reduced the motor temperature of doing work; Reduced the generation of nitrogen oxide, the pump when pushing back part waste gas cylinder and can reduce air inlet next time through exhaust valve is inhaled power loss, thereby promotes power.

With reference to Fig. 3, Fig. 4; As another embodiment of the invention; Said flexible rod 5 comprises and interts the body of rod 51 of the set catch 7 of sleeve pipe 1 inwall and fitting seat 4; Be fixed with piston sheet 6 at the body of rod 51 front ends, the said body of rod 51 is provided with bulge loop 53, outside the body of rod 51, between bulge loop 53 and fitting seat 4, is set with spring 9; This structure with before a kind of mode of execution be equal to basically; When exhaust gas pressure extrusion piston sheet 6; The piston sheet 6 and the body of rod 51 receive gas pressure and drive bulge loop 53 extrusion springs 9; Overcome the pressure of spring 9, pass backward and reset, thereby the exhaust pressure of control motor remains on the average range of an appointment.

In the present invention, the said body of rod 51 rear ends are provided with the adjusting nut 10 of regulating piston sheet 6 initial openings, through adjusting nut can the regulating piston sheet mouth of pipe 11 sealing or semi-closed states before 6 pairs.

In actual use, can this product be installed between waste pipe and the silencing apparatus through flange, also can it be welded on after the silencing apparatus, two kinds of installation methods can both play same effect.

The present invention is simple and reasonable for structure, cost of production is low, is a kind of energy-saving device for engine with exhaust gas recirculation function that extensively is installed on the automobile engine exhaust pipe.

Claims

1. the energy-saving device for engine that has exhaust gas recirculation function; It is characterized in that: comprise sleeve pipe (1); Said sleeve pipe (1) is provided with suction port (8) and relief opening (2); The incision of this relief opening (2) forms the preceding mouth of pipe (11), is positioned at sleeve pipe (1) and is set with piston apparatus (3), and said piston apparatus (3) comprises the fitting seat (4) that is socketed in sleeve pipe (1) rear end, the flexible rod (5) that interts fitting seat (4) and the piston sheet (6) that is arranged on flexible rod (5) front end; When flexible rod (5) is in the normal state following time, piston sheet (6) is the preceding mouth of pipe (11) sealing of relief opening (2) below or semiclosed, is positioned at that flexible rod (5) is gone up or sleeve pipe (1) inwall is provided with catch (7), also has air outlet hole (41) on the said fitting seat (4).

2. the energy-saving device for engine with exhaust gas recirculation function according to claim 1; It is characterized in that said flexible rod (5) comprises the body of rod (51) of interspersed fitting seat (4); On the body of rod (51), be fixed with piston sheet (6) and catch (7) respectively; Outer catch (7) the rear end fixed cover that is positioned at of the said body of rod (51) is equipped with the body (52) shorter than the body of rod (51); Opening on the fitting seat (4) that the caliber of said body (52) is passed than the body of rod (51) is big, outside body (52), is positioned between catch (7) and the fitting seat (4) to be set with spring (9).

3. the energy-saving device for engine with exhaust gas recirculation function according to claim 1; It is characterized in that said flexible rod (5) comprises the body of rod (51) that runs through set catch (7) of sleeve pipe (1) inwall and fitting seat (4); Be fixed with piston sheet (6) at the body of rod (51) front end; The said body of rod (51) is provided with bulge loop (53), outside the body of rod (51), is positioned between bulge loop (53) and the fitting seat (4) to be set with spring (9).

4. according to claim 2 or 3 described energy-saving device for engine, it is characterized in that the said body of rod (51) rear end is provided with the adjusting nut (10) of regulating piston sheet (6) initial opening with exhaust gas recirculation function.