CN205977441U - Gloomy piston of aunar gold - Google Patents

Abstract

The utility model provides a gloomy piston of aunar gold, relates to the automobile engine piston. This gloomy piston of aunar gold still is provided with cross arch at the upper surface of piston crown, the outward flange setting of cross bellied outward flange top surface along the piston on, and cross bellied both sides contained angle department is provided with that the hole is dodged to admitting air side and the hole is dodged to the exhaust side. Increasing cross protruding back, making the combustion chamber volume of piston diminish, press the scaling grow, 10% breakdown torque is only lost to this structure, reduced by 12% 15% fuel consumption is rateed, has extensive application prospect.

Description

A kind of Sydney Atkinson piston

Technical field

This utility model is related to piston of automobile engine, particularly to a kind of Sydney Atkinson piston.

Background technology

At present in automobile industry, with the rapid growth of World Economics, automobile pollution gets more and more, environmental protection simultaneously and The problems such as energy shortage, institute's facing challenges were more and more severeer.In order to meet the need of the energy-saving and emission-reduction relevant laws and regulations of increasingly stringent Ask, developing a kind of environmentally friendly vehicle of energy-saving and emission-reduction has become the top priority of Ge great main engine plants.Due to pure electric automobile exploitation Also face some bottlenecks, do not enable high-volume at present and put goods on the market it is impossible to fully meet the demand of client.Traditional Alto , in order to suppress phenomenon of detonation, generally adopting can be using postponing igniting measure, due to the impact pumping loss of air throttle for cycle engine Greatly, the thermal efficiency so leading to electromotor declines, and fuel economy is poor, electromotor in sub-load high fuel consumption it is difficult to full The requirement of sufficient fuel oil consumption.

Content of the invention

In view of the shortcomings of the prior art, the utility model proposes a kind of Sydney Atkinson piston, solve existing piston The defect that compression ratio is low, friction loss is big, its be related to rationally, structure is simple, be easily installed.

This utility model be employed technical scheme comprise that：A kind of Sydney Atkinson piston, including with air inlet side avoid hole and Exhaust side avoids piston crown and the skirt section in hole, is characterized in that, is additionally provided with the upper surface of piston crown cross convex Rise, the cross raised spark plug that is provided centrally with avoids hole, the outward flange of cross raised outward flange top surface along along piston Setting, cross raised both sides angle is provided with air inlet side avoidance hole and exhaust side avoids hole.

As a kind of preferred version of the present utility model, described cross projection, it is rectangle, and another side is Symmetrical sector.

As another kind preferred version of the present utility model, the lower plane of piston skirt is located at same water with key seat lower plane Plane.

The beneficial effects of the utility model are：This Sydney Atkinson piston, is additionally provided with cross in the upper surface of piston crown Type is raised, the outward flange setting of cross raised outward flange top surface along along piston, cross raised both sides angle setting Air inlet side is had to avoid hole and exhaust side avoidance hole.After increasing cross projection, the combustion chamber volume of piston is made to diminish, compression ratio becomes Greatly, this structure only loses 10% torque capacity, reduces the fuel consumption of 12%-15%, is with a wide range of applications.

Brief description

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment In required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are only of the present utility model Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, also can be according to these Accompanying drawing obtains other accompanying drawings.

Fig. 1 is piston front view in this utility model embodiment；

Fig. 2 is piston cross bulge-structure schematic diagram in this utility model embodiment；

Fig. 3 is piston skirt structural representation in this utility model embodiment；

In figure number explanation is as follows：1 air inlet side avoids hole, 2 cross raised, 3 exhaust sides avoid hole, 4 compress high faces, 5 One annular groove, 6 two annular grooves, 7 oil ring grooves, 8 spill ports, 9 skirt sections, 10 roundings, 11 spark plugs avoid holes, 12 exhaust sides avoid hole, 13 pin-and-holes, 14 air inlet side avoid hole, 15 skirt section lower planes, 16 key seat lower planes.

Specific embodiment

Above-mentioned purpose of the present utility model, feature and advantage is enable to become apparent from understandable, below in conjunction with the accompanying drawings 1～Fig. 3 With specific embodiment, this utility model is described in further detail.

Embodiment 1：

A kind of Sydney Atkinson piston, including with air inlet side avoid hole 1, air inlet side avoid hole 14 and exhaust side avoid hole 3, Exhaust side avoids hole 12, an annular groove 5, two annular grooves 6, the piston crown of oil ring groove 7 and the skirt section 9 with pin control 13, as Fig. 1 institute Show.8 spill ports 8 are additionally provided with oil ring groove 7, smoothly return to oil sump from oilhole for completing the machine oil that oil ring scrapes off, 8 Individual spill port is divided into two groups, and every 4 are arranged in Main thrust face, and every 4 are arranged in Mi thrust face.Air inlet side avoids hole 1 and air inlet The structure that side avoids hole 14 is identical, and it is identical with exhaust side avoidance hole 12 also structure that exhaust side avoids hole 3.Pin-and-hole 13 adopts inner side straight Footpath is more than the horn-type structure of outside diameter.

It is additionally provided with cross raised 2 in the upper surface of piston crown, as shown in Figure 2.Cross raised 2 centrally disposed Spark plug is had to avoid hole 11, the outward flange of cross raised 2 outward flange top surface along along piston is arranged, the two of cross raised 2 Side angle is provided with air inlet side and avoids hole 1, air inlet side avoidance hole 14 and exhaust side avoidance hole 3, exhaust side avoidance hole 12.Piston Head is located at the top compressing high face 4, using the direct casting of unitary mould, is not in sharp side, it is possible to reduce pinking Probability.

Embodiment 2：

The present embodiment is with the difference of embodiment 1：Described cross raised 2, it is rectangle, and another side is Symmetrical sector, what both sides intersected is provided centrally with spark plug avoidance hole 11, prevents spark plug from avoiding hole 11 and occurs with spark plug Contact, it is to avoid cause danger.Cross raised the 2 of top land cooperatively form burning with the piston cylinder cover in engine cylinder body Room, due to increased cross raised 2, the volume of combustor diminishes, and compression ratio increases, engine power performance strengthens, and fires simultaneously Specific oil consumption reduces 12%-15%.

Piston in the present embodiment adopts skirt structure, not only reduces piston weight moreover it is possible to reduce piston and engine cylinder The contact area of body, reduces friction loss.Lower limb rounding 10 in skirt section 9 in the present embodiment, the skirt section lower plane of piston 15 are located at same level with key seat lower plane 16, as shown in Figure 3.

Although the foregoing describing specific embodiment of the present utility model, those skilled in the art in the art should Work as understanding, these are merely illustrative of, various changes or modifications can be made to these embodiments, new without departing from this practicality The principle of type and essence.Scope of the present utility model is only limited by the claims that follow.

Claims (3)

1. a kind of Sydney Atkinson piston, avoids the piston crown cheated and skirt section including avoiding hole with air inlet side with exhaust side, its It is characterised by, be additionally provided with cross projection in the upper surface of piston crown, the cross raised spark plug that is provided centrally with is kept away Allow hole, the outward flange setting of cross raised outward flange top surface along along piston, cross raised both sides angle is provided with Air inlet side avoids hole and exhaust side avoids hole.

2. it is characterised in that described cross projection, it is rectangular to Sydney Atkinson piston as claimed in claim 1 Shape, another side is symmetrical sector.

3. Sydney Atkinson piston as claimed in claim 1 is it is characterised in that the lower plane of piston skirt and key seat lower plane position In same level.