CN202707270U

CN202707270U - Aluminum piston with two oil circular grooves for flaring combustion chamber

Info

Publication number: CN202707270U
Application number: CN 201220430863
Authority: CN
Inventors: 汪舵海; 胡海珊; 张武
Original assignee: ANHUI WHITE RABBIT LAKE POWER Co Ltd
Current assignee: ANHUI WHITE RABBIT LAKE POWER CO., LTD.
Priority date: 2012-08-29
Filing date: 2012-08-29
Publication date: 2013-01-30
Anticipated expiration: 2022-08-29

Abstract

The utility model discloses an aluminum piston with two oil circular grooves for a flaring combustion chamber. The aluminum piston with the two oil circular grooves comprises a piston body, wherein the piston body consists of a fire bank, a circular groove part and a skirt part, the top of the piston body is provided with a basin-shaped rotary flaring combustion chamber, the circular groove part is sequentially provided with three gas circular grooves and an upper oil circular groove from top to bottom, the upper oil circular groove is provided with an oil return blind hole, an inner cavity of the piston skirt part is provided with a piston pin hole, the position of the outer wall of the piston skirt part, under the piston pin hole, is provided with a lower oil circular groove, and the lower oil circular groove is provided with a plurality of oil return blind holes of the lower oil circular groove. The aluminum piston with the two oil circular grooves has the advantages that the power loss of an internal combustion engine is reduced, the combustion efficiency of the fuel is enhanced, the power is increased, the occurrence of accumulated carbon is reduced, the energy is saved, the environment-friendly effect is realized, the emission of harmful gases is reduced, and the emission standard above European standard III is reached.

Description

Two oil ring groove aluminium pistons of flared type Combustion chamber design

Technical field

The utility model relates to Diesel Engine Aluminium Piston, is specifically related to the diesel engine all-aluminium piston of a kind of cylinder diameter φ 85mm.

Background technique

Aluminium piston of IC engine is as the key components and parts of internal-combustion engine, and its physical dimension and inherent quality are directly determining discharging and the working life of internal-combustion engine.At present adopt smooth complete skirt structure with the eka-aluminum piston, take full skirt to cooperate with cylinder, make the power of IC engine loss more than 20%.Existing aluminium piston technology generally only designs one oil ring groove, and sealing is undesirable with lubrication effect.The minimum emission request of China's city combustion motor will reach more than the III of Europe now, and to reach the above emission standard of Europe III, just must adopt the structural design more than two valves, and will increase many parts more than the structure of two valves, the distribution device relative complex that also becomes increases the difficulty in failure frequency and the maintenance.

Summary of the invention

Technical problem to be solved in the utility model is to reduce the power of IC engine loss, improves oil inflame efficient, and hoisting power reduces the generation of carbon deposit, realizes simultaneously energy-conserving and environment-protective, reduces noxious gas emission, makes it to reach the above emission standard of Europe III.

For solving the problems of the technologies described above, two oil ring groove aluminium pistons of flared type Combustion chamber design of the present utility model, comprise the piston only that is formed by firepower bank, annular groove section, skirt section three parts, be provided with a basin shape solid of rotation enlarging firing chamber at the top of piston only, annular groove section is disposed with three road compressions and from top to bottom with the upper oil ring groove of oil return blind hole, the piston skirt inner chamber is provided with piston pin hole, the outer wall upper piston pin-and-hole of piston skirt is provided with lower oil ring groove with upper/lower positions, is provided with a plurality of lower oil ring groove oil return blind holes on the lower oil ring groove.

After having adopted technique scheme, because basin shape solid of rotation flaring structure is adopted in the firing chamber, it is coaxial with piston only, bottom margin employing arc transition, this structure can increase local fuel concentration, fuel oil can fully be atomized, make ignition point in advance, improve oil inflame efficient, hoisting power, reduce the generation of carbon deposit, realize simultaneously energy-conserving and environment-protective, reduce noxious gas emission.

Two oil ring groove aluminium pistons of flared type Combustion chamber design of the present utility model, the outer wall upper piston pin-and-hole of its piston skirt is provided with lower oil ring groove with upper/lower positions, is provided with lower oil ring groove oil return blind hole on the lower oil ring groove.This structure has increased the matching gap of piston skirt and cylinder, avoids full skirt to cooperate, and reduces the power of IC engine loss more than 10%.Can ring installation in the lower oil ring groove of piston skirt, piston ring and cylinder wall sufficient lubrication, reduce dry friction, and can prevent machine oil from scurrying into the firing chamber burn oil and cause tail gas pollution discharging, thereby so that two oil ring groove aluminium pistons of flared type Combustion chamber design of the present utility model reach the above emission standard of Europe III.

Description of drawings

Fig. 1 is schematic diagram of the present utility model;

Fig. 2 is that Fig. 1 is along the sectional view of A-A line;

Fig. 3 is that Fig. 2 is along the sectional view of B-B line;

Fig. 4 is that Fig. 2 is along the sectional view of C-C line.

Among the figure: 1---the firepower bank, 2---annular groove section, 3---the skirt section, 4---piston only, 6---compression, 9---basin shape enlarging firing chamber, 11---lower oil ring groove, 12---lower oil ring groove oil return blind hole, 13---piston pin hole, 14---the pin-and-hole jump-ring slot, 15---upper oil ring groove.

Embodiment

Be described further below in conjunction with two oil ring groove aluminium pistons of accompanying drawing to flared type Combustion chamber design of the present utility model:

With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, two oil ring groove aluminium pistons of flared type Combustion chamber design of the present utility model, comprise by firepower bank 1, annular groove section 2, the piston only 4 that skirt section 3 three parts form, be provided with a basin shape solid of rotation enlarging firing chamber 9 at the top of piston only 4, annular groove section 2 is disposed with three road compressions 6 and from top to bottom with the upper oil ring groove 15 of oil return blind hole, piston skirt 3 inner chambers are provided with piston pin hole 13, the outer wall upper piston pin-and-hole 13 of piston skirt 3 is provided with lower oil ring groove 11 with upper/lower positions, is provided with a plurality of lower oil ring groove oil return blind holes 12 on the lower oil ring groove 11.

Piston only 4 comprises firepower bank 1, annular groove section 2, skirt section 3 three parts from top to bottom.

One basin shape solid of rotation enlarging firing chamber 9 is arranged at the top of piston only 4, and itself and piston only are coaxial, and bottom margin adopts arc transition; Above-mentioned flared type Combustion chamber design is very beneficial for mixing of fuel oil and air, and make fuel oil can not stick on the wall of firing chamber, because place, flared type firing chamber air-fuel mixture concentration is higher than other zones, firing chamber, can preferentially get angry under lower pressure, the advantage one of design is to have prolonged period of combustion like this, makes mixed oil and gas perfect combustion, reduce the Tail Gas discharging, the 2nd, reduced firing pressure, diesel engine is more easily started, the 3rd, improve the power performance of diesel engine and reduce NO _XDischarging content with the particle composition.

Piston ring slot part 2 has three road compressions 6 and from top to bottom successively with the upper oil ring groove 15 of oil return blind hole, and above-mentioned three road compressions designs can prevent that the firing chamber mixed gas from scurrying into crankcase, cause power loss.

The outer wall upper piston pin-and-hole 13 of piston skirt 3 is provided with lower oil ring groove 11 with upper/lower positions, be provided with a plurality of lower oil ring groove oil return blind holes 12 on the lower oil ring groove 11, lower oil ring groove oil return blind hole 12 is non-homogeneous symmetrical on lower oil ring groove 11, in the present embodiment, be provided with 8 lower oil ring groove oil return blind holes 12.

The utility model has adopted the structure that oil ring groove 15, lower oil ring groove 11 are set on the piston only 4, the advantage one of twice oil ring groove design is to avoid full skirt to cooperate, reduce the wattless power loss, the 2nd, the machine oil on the scraping wall, prevent that machine oil from scurrying into the firing chamber burn oil and causing Tail Gas discharging, the 3rd, improve the lubricating condition of piston skirt, reduce component wear, further increase the diesel internal combustion acc power.

Piston pin hole 13 cooperates with pin-and-hole jump-ring slot 14 and wrist pin, drives crankshaft rotating by connecting rod.

The utility model structure can Effective Raise diesel internal combustion acc power, reduces the wattless power loss, reduces exhaust emissions, can reduce the complex structure degree of component simultaneously, reduces the difficulty in failure frequency and the maintenance.

Claims

1. two oil ring groove aluminium pistons of a flared type Combustion chamber design, comprise by firepower bank (1), annular groove section (2), the piston only (4) that skirt section (3) three parts form, it is characterized in that: be provided with a basin shape solid of rotation enlarging firing chamber (9) at the top of piston only (4), annular groove section (2) is disposed with three road compressions (6) and from top to bottom with the upper oil ring groove (15) of oil return blind hole, piston skirt (3) inner chamber is provided with piston pin hole (13), the outer wall upper piston pin-and-hole (13) of piston skirt (3) is provided with lower oil ring groove (11) with upper/lower positions, is provided with a plurality of lower oil ring groove oil return blind holes (12) on the lower oil ring groove (11).