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Free piston type engine and starting method thereof

A piston engine, free technology, used in free piston engines, machines/engines, mechanical equipment, etc.

Inactive Publication Date: 2013-07-10
ROUSH AUTOMOBILE SYST SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Free piston type engine and starting method thereof
  • Free piston type engine and starting method thereof
  • Free piston type engine and starting method thereof

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0027] Such as figure 1 with 2 A cross-sectional view of a free-piston engine of the present invention is shown. The free-piston engine 10 includes a first cylinder 12 and a second cylinder 14 axially aligned with the first cylinder 12 . Both cylinders are arranged in the first cylinder liner 16 and the second cylinder liner 17 or in the body. The first piston group, ie the first inner piston 18 and the second inner piston 20 , are connected to each other via push rods 22 . The first inner piston 18 of the first piston group reciprocates in the first cylinder 12 while the second inner piston 20 of the first piston group reciprocates in the second cylinder 14 . The second group of pistons, namely the first outer piston 24 and the second outer piston 26 are connected to each other by a first ti...

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Abstract

The invention discloses a free piston type engine and a starting method thereof. The method comprises the steps of (1) using a driver to drive a piston to move so as to sufficiently open an air inlet and supply air to an air cylinder; (2) using the driver to provide periodic force to act upon the piston and gradually increasing air inlet pressure in a cyclic mode on the premise that the air inlet is not opened; and (3) injecting fuel into the air inlet so as to produce air-oil mixtures inside the air cylinder. The free piston type engine and the starting method thereof have the advantages that the driver is used for moving the piston to an opening position of the air inlet to start the engine, thus, the entered air is stored in the air cylinder, and the fuel enters the air cylinder and is burnt in the air cylinder; and the air is compressed through the minimum driving force, so that the pressure and the temperature meet the spontaneous combustion requirements.

Description

technical field [0001] The invention relates to the starting of an internal combustion engine, in particular to a free-piston engine and a starting method thereof. Background technique [0002] A free-piston internal combustion engine consists of one or more pistons that reciprocate within a combustion cylinder. The crankshaft is not interconnected with the pistons. Instead, each piston moves with the force generated by the combustion of the fuel-air mixture in the combustion cylinder. The pressure created by combustion in one cylinder can be used to compress the fuel-air mixture in another cylinder. Or a drive system could be used to compress the air-oil mixture after the expansion stroke. The drive system also reciprocates the piston when starting the engine before the combustion of the fuel-air mixture in the cylinder occurs. [0003] Since there is no shaft on the free-piston engine that connects the piston to coordinate the reciprocating motion of the piston, and al...

Claims

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Application Information

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IPC IPC(8): F02B71/00F02B71/02
Inventor 左朝凤陈新李传友陈立新陈榜
Owner ROUSH AUTOMOBILE SYST SHANGHAI CO LTD