CN2670615Y - Environmental protective oil-saving piston - Google Patents

Abstract

The utility model discloses an environmental protective oil-saving piston, comprising a piston body (1) and a first ring shore (4), which is characterized in that an external cone surface is arranged at the upper part of the first ring shore (4), and the first ring shore (4) is made into an association of a cylinder face and a conical surface. The utility model is the environmental protective oil-saving piston that the combustion of the piston head is complete, HC discharge is reduced and engine oil is effectively detained to flee upwards and enter into a combustion-chamber, and the utility model has simple structure, convenient manufacture and dependable performance.

Description

A kind of environmental protection fuel-saving type piston

Technical field

The utility model relates to a kind of piston, particularly relates to a kind of environmental protection fuel-saving type piston.

Background technique

The head of piston body and the shape of slot part all are the cylinder bodily forms at present, slot part at piston body adopts the sealing of three ring groups, form annular space between the circle at first compression ring in cylindrical body piston between the firing chamber and the cylinder, because its gap is less, mixed gas in this annular space often burns insufficient, produce harmful HC discharging, and in compression and working stroke, the mixed gas that enters this gap is less to the downward pressure of compression ring, can not effectively stop to scurry on the machine oil to enter the firing chamber, increase the consumption of machine oil.

The model utility content

Technical problem to be solved in the utility model provides a kind of piston crown sufficient combustion, reduces the HC discharge amount and can effectively stop and scurry the environmental protection fuel-saving type piston that enters the firing chamber on the machine oil.

The technological scheme that the utility model adopts in order to solve the problems of the technologies described above is: a kind of environmental protection fuel-saving type piston, comprise piston body and top land thereof, it is characterized in that: the top car of described top land has outer conical surface, makes top land form the association of cylndrical surface and conical surface.

As a kind of improvement of the present utility model, the oblique angle α of the outer conical surface on the top of described top land is 0.05 °～60 °.

Adopt the environmental protection fuel-saving type piston of technique scheme, owing to outer conical surface is arranged at the top of top land car, make top land form the association of cylndrical surface and conical surface, thereby the top land of piston body and the annular space between the cylinder wind circle have been increased, effectively improved the burning in this sideshake, reduced harmful HC discharge amount, and in compression and working stroke, the mixed gas that enters the annular space has higher downward pressure to stop to scurry on the machine oil to compression ring and enters the firing chamber, has reduced the consumption of machine oil, has improved the Economy of gasoline, reduce exhaust pollution and human body is endangered, and it is simple in structure, easily manufactured, not additional any device, cheap.

In sum, the utility model is a kind of piston crown sufficient combustion, reduces the HC discharge amount and can effectively stop to scurry on the machine oil and enter firing chamber and environmental protection fuel-saving type piston simple in structure, easily manufactured, reliable performance.

Description of drawings

Accompanying drawing is the utility model structural representation.

Embodiment

Referring to accompanying drawing, the utility model comprises piston body 1, wrist pin 2, snap ring 3, first compression ring 5, second compression ring 6, oil ring 7, on the top land 4 of piston body 1, be 4 ° outer conical surface less than the position of the top land 4 height oblique angle α that gets on the bus, make top land 4 form the association of cylndrical surface and conical surface from the distance h of the upper side of its top and first annular groove.

Car has outer conical surface on the top of top land 4, make top land 4 form the association of cylndrical surface and conical surface, both made top land 4 keep best minimum clearance, the top land 4 of piston body 1 and the annular space between the interior circle of cylinder have been increased again, effectively improved the burning in this sideshake, reduced harmful HC discharge amount, and in compression and working stroke, the mixed gas that enters the annular space has higher downward pressure to stop to scurry on the machine oil to compression ring and enters the firing chamber, has reduced the consumption of machine oil, has improved the Economy of gasoline, reduce exhaust pollution and human body is endangered, and it is simple in structure, easily manufactured, not additional any device, cheap.

Claims (2)

1, a kind of environmental protection fuel-saving type piston comprises piston body (1) and top land (4) thereof, and it is characterized in that: the top car of described top land (4) has outer conical surface, makes top land (4) form the association of cylndrical surface and conical surface.

2, a kind of environmental protection fuel-saving type piston according to claim 1, it is characterized in that: the oblique angle α of the outer conical surface on the top of described top land (4) is 0.05 °～60 °.