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Internal combustion engine with high squish piston

An internal combustion engine, piston technology, applied in the field of internal combustion engines, which can solve the problems of reducing soot and oxidation, etc.

Active Publication Date: 2015-06-10
DEERE & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, conventional roof constructions have limited soot and oxidation reduction for ever-reducing emission limits, especially in soot-generating areas

Method used

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  • Internal combustion engine with high squish piston
  • Internal combustion engine with high squish piston

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Embodiment Construction

[0012] specific implementation plan

[0013] Such as figure 1 As shown, an engine 10 of the reciprocating internal combustion engine type is represented. The engine 10 works by propelling reciprocating piston motions through combustion strokes in the combustion chambers. Such as figure 1 As shown, the reciprocating motion of the piston is converted into rotary motion by the crankshaft. However, it should be apparent to those skilled in the art that the reciprocating motion of the piston can be exploited in the form of a linear generator, wherein the motion of the piston and ferromagnetic material produces an electrical output.

[0014] Engine 10 includes cylinder block 12 having a plurality of bores 14 for receiving reciprocating pistons 16, only one of which is shown. The cylinder bore 14 may be cast integrally with the cylinder block 12 or, as shown here, may be a separate liner to enhance the recovery process.

[0015] The piston 16 includes a cylindrical structure 18 ...

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PUM

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Abstract

A piston crown (32) for a diesel engine (10) in which the crown (32) has an annular recess (62) coaxial with an injector (44) injecting fuel in a radiated, non-swirl pattern. The recess (62) has an internal central crown portion (66) approximately parallel to the angle of the fuel injected and a curved outer section (70) to curve air compressed by the piston (16) significantly enough that it is directed back toward the central axis (A) and mixes with the fuel injected along the internal central crown portion (66) to promote mixing and reduction in soot formation.

Description

technical field [0001] The present invention relates to internal combustion engines, and more particularly to pistons for internal combustion engines. Background technique [0002] The shape of pistons in internal combustion engines has been the subject of design and development for decades. Especially in the field of compression ignition or diesel engines, the shape of that part of the piston exposed to the combustion process has been highly developed. This is because compression-ignition engines rely on the heat of compression to ignite quantitatively timed injections of fuel to provide proper combustion, which results in maximum efficiency and power. Combustion chamber design has received increased attention following the U.S. Environmental Protection Agency (EPA) regulations on emissions from internal combustion engines. [0003] It is common to provide a diesel engine combustion chamber within a cylinder with a reciprocating piston. The piston moves from maximum volu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F3/26
CPCF02B3/06F02B23/0651F02B23/0669F02B23/0672F02B29/0406F02B37/00F02B2275/14F02M26/23Y02T10/12
Inventor 克雷格·W·罗曼
Owner DEERE & CO