CN2668874Y

CN2668874Y - Engine air-flowing auxiliary reinforcing device

Info

Publication number: CN2668874Y
Application number: CNU2003201026222U
Authority: CN
Inventors: 施宗荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-11-03
Filing date: 2003-11-03
Publication date: 2005-01-05
Anticipated expiration: 2013-11-03

Abstract

The utility model discloses an engine air-flowing auxiliary reinforcing device which is positioned in the discharge pipe of a cylinder, and designed into a hollow body. The surface of the inner wall where the proportional position is arranged is provided with an integral formed double inclined protrusion parts, so a front through hole and a back through hole with an inclined conical surface are formed, and the bore diameter of the front through hole smaller than the bore diameter of the back through hole is designed. In other words, the bore diameter inclined step by step is enlarged from the middle inclined protrusion part to two external ends, and front through hole and back through hole in bell mouth shaped are formed in different directions. Since the bore diameter of the back through hole is larger than the bore diameter of the front through hole, and the back through hole is formed in bore expansion effect.

Description

Engine Air-assisted Enhancement Devices

Technical field

The utility model relates to car engine, particularly relates to the combustion-gas flow control of car engine.

Background technique

The formation substantially of car engine is shown in figure one.A cylinder 10, has firing chamber 101, interior dress is sent out a bent axle 18, piston 17, the piston top then is provided with air inlet 11 suction port 110, exhaust head 12 relief openings 120, the air inlet head is assembled into tracheae 111 and supplies to discharge waste gas after burning for the new air of input, exhaust head assembling outlet pipe 19, and suction port 110, relief opening 120 internal orifice places are equiped with action opposite intake valve 13, exhaust valve 16, spring 14, camshaft 15a, 15b.In other words, input air enters firing chamber 101 when mixing fuel combustions, is intake valve 13 and opens, and exhaust valve 16 cuts out, and when discharging waste gas after burning, is that intake valve 13 is closed, exhaust valve 16 is opened.

Yet, when the input air auxiliary combustion, have moment two states of opening simultaneously (about signa) of " intake valve is opened, exhaust valve change over to from open mode and close ", i.e. so-called " valve overlap period ".And this " valve is heavily built period " time is long, short setting, can produce following two kinds of different effects: when (1) adjusts valve overlap duration to " intake valve is opened comparatively fast; the time is longer ", promptly be to be exhaust valve to open the time shorter, though can obtain more air auxiliary combustion, and the carbon monoxide of reduction discharging waste gas, carbon dioxide (black smoke), but this is fit to " low speed revolution (crank up) ", be not suitable for high speed rotary, because of period of exhaust less than period of intake, " natural circulation " existing picture will take place, promptly be " exhaust gas recirculatioon ", so can reduce acceleration effect, that is, during the high rotating speed of desire (quicken fast), will increase with oil mass and can reach required acceleration figure.(2) otherwise, transfer to the intake valve time of opening when lacking (opening less), promptly be to be the exhaust valve time of opening to be longer than intake valve, though it is better to get the moment acceleration effect this moment, less because of air inlet, rate of combustion is relatively poor, so have the problem than excessive fuel consumption.

Above-mentioned explanation promptly be the control of known engine air-flow, but it can only allow the user select " slow-speed of revolution, quicken slowly ", " high rotating speed, the fast acceleration but high oil consumption ", can't both take into account.

Summary of the invention

See also figure two, three, four, in the outlet pipe 19 of cylinder 10 exhaust heads 12 relief openings 120, be provided with the auxiliary stiffening device of air-flow, should assist stiffening device to be designed to the body 20 of a hollow, wall preset proportion position is provided with the oblique protuberance 21 of integrated double inclined plane within it, thereby form preceding through hole 22, back through hole 23, and be designed to the aperture φ 2 of the aperture φ 1 of preceding through hole 22 less than back through hole 23 with tilted conical surface 220,230.In other words, gradually tiltedly amplify the aperture to two outer ends, form through hole 22 before the bell mouth shape of different direction, back through hole 23, and, make back through hole 23 be the reaming effect because of the aperture φ 2 of back through hole 23 aperture φ 1 greater than preceding through hole 22 from the oblique protuberance 21 of centre.

Description of drawings

Figure one analyses and observe schematic diagram for the known engine structure

Figure two partly cuts open figure for the utility model preferred embodiment solid

The configured in one piece sectional view that figure three uses for the utility model assembling

Partial sectional view when figure four uses for the utility model assembling

Figure five installs the embodiment of auxiliary sleeve additional for the utility model (A) solid is partly cutd open exploded view and (B) assembled sectional view

Figure six partly cuts open figure and (B) assembled sectional view for (A) solid of externally connected exhaust pipe formula embodiment of the present utility model

Figure seven is embodiment's sectional view of the present utility model and cylinder exhaust head formation one

Figure eight is a plurality of embodiment's sectional views that are assembled in the outlet pipe of the present utility model

Embodiment

The utility model (body 20) compressing filled in be fixed in the outlet pipe 19, and through hole 22 is the waste gas exhaust end for waste gas input end, back through hole 23 before being.When waste gas during,, make gas produce acceleration at preceding through hole 22 places by the forward and backward through

hole

22,23 of opposite direction taper by forward and backward through hole 22,23.Specifically, the back through hole 23 of the preceding through hole 22 of smaller aperture due and the larger aperture that joins has formed one " Venturi tube " kenel, thereby can produce " venturi-effect ".Again, calculate the wherein variation of flow velocity as desire, can calculate according to " Bernoulli law ", its formula is Q (flow)=φ 1 (sectional area of preceding through hole, promptly be the aperture) * V1 (flow velocity)=φ 2 (sectional area of back through hole, promptly be the aperture) * V2 (flow velocity), therefore, when the waste gas of same traffic (Q) passed through the front and back through hole, φ 1 (preceding through-hole aperture) reduced, V1 (flow velocity) is increased, so can have the effect of " enhancing flow velocity " in body 20, this strengthens flow velocity will force exhaust velocity to speed, and can produce " suction effect " and speed exhaust velocity, similar " pull of vacuum effect " therefore can attach and speed entering of suction port 110 new air.That is waste gas speeds discharge, can produce " drainage " effect, can speed, increase to attract new air to enter.

As shown in the above description, the utility model can be in the moment of " valve overlap period (intake valve is opened; exhaust valve is about to cut out) ", generation speeds, increase the effect that scavenges and suck new air, and speed increase waste discharge gas promptly is the problem of " reduction exhaust gas recirculatioon ", speed, increase the new air of input and promptly be can promote the new air of entering of combustion-supporting effect and this increase can be not too much, because just just produce when " valve overlap period ", and because of waste discharge gas sucks, so when not having " valve overlap period ", when promptly closing exhaust valve and can the new air of further excessive suction.That is the utility model is to have an effect according to valve event, but not is the new air of long-time excessive suction, makes it have the effect of intermittently strengthening mending new air.So compare with known technology, can obtain under the situation of identical use oil mass, having the effect of very fast acceleration, promptly be to increase moment horsepower, or use less oil mass can reach identical acceleration figure, that is to say fuel-efficient effect.

The utility model can have following embodiment, belongs within the utility model equivalent structure intention category:

(1) shown in figure four, the length L 1 of preceding through hole 22 tilted conical surfaces 220 is designed to the length L 2 less than back through hole 23 tilted conical surfaces 230, and L1: L2 is the best with 1: 2 length ratio.

(2) shown in figure five (A), (B), the material of body 20 can also adopt pottery except adopting the metal material, and its periphery coats with auxiliary sleeve 26, and compressing is filled in and is fixed in the outlet pipe 19 again.

(3) shown in figure six (A), (B), the front end of body 20 can be equipped with locking plate 24 for relief opening 120 exhaust heads 12 that engage cylinder 10, and the socket section 25 of one is then designed for fit outlet pipe 19 in the rear end.

(4) shown in figure seven, described body is molded directly within the relief opening hole wall of cylinder 10 exhaust heads 12, can obtain quickening the effect of waste discharge gas equally.

(5) shown in figure eight, can in outlet pipe 19, assemble the body 20 of (present embodiment is three) more than, can get the effect of strengthening exhaust flue gas streams speed continuously.

Claims

1. Engine Air-assisted Enhancement Devices, be located in the outlet pipe of cylinder exhaust head relief opening, it is characterized in that, this Engine Air-assisted Enhancement Devices is designed to the body of a hollow, internal face preset proportion position at described body is provided with the oblique protuberance of integrated double inclined plane, thereby form preceding through hole and back through hole, and be designed to the aperture of the aperture of preceding through hole less than the back through hole with tilted conical surface.

2. Engine Air-assisted Enhancement Devices according to claim 1 is characterized in that, the length of through hole tilted conical surface before the described body is less than the length of back through hole tilted conical surface.

3. Engine Air-assisted Enhancement Devices according to claim 1 is characterized in that the material of described body can adopt metal, ceramic material.

4. Engine Air-assisted Enhancement Devices according to claim 1 is characterized in that, the periphery of described body can add an auxiliary sleeve it is coated.

5. Engine Air-assisted Enhancement Devices according to claim 1 is characterized in that, the front end of described body can be equipped with locking plate can be provided with the socket section of one for the fit outlet pipe for joint cylinder exhaust head, rear end.

6. Engine Air-assisted Enhancement Devices according to claim 1 is characterized in that, described body is molded directly within the relief opening hole wall of cylinder exhaust head.

7. Engine Air-assisted Enhancement Devices according to claim 1 is characterized in that, more than one described body can be assembled in the outlet pipe.