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Three-stroke reciprocating piston type engine

A technology of reciprocating pistons and engines, applied in engine components, machines/engines, mechanical equipment, etc., can solve the problems of sealing and lubrication difficulties, three-stroke engine sealing and lubrication difficulties, etc. Layout, the effect of reducing manufacturing costs

Inactive Publication Date: 2013-07-03
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the deficiency that the piston shaft of the front piston of the above-mentioned three-stroke engine used for exhausting and sucking air is in the thermal expansion chamber when it is in operation, causing sealing and lubrication difficulties, the technical problem to be solved by the present invention is to provide a method that solves the sealing and lubrication problems of the three-stroke engine. Three-Stroke Reciprocating Piston Engines with Difficult Lubrication Problems

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Such as Figure 1 to Figure 7 and Figure 11 As shown, the single-cylinder three-stroke reciprocating piston engine of the present invention comprises crankcase 301, crankshaft 307 similar to traditional four-stroke engine, crankshaft connecting rod 308, main piston 309, cylinder 30, cylinder head 304 etc. are installed on cylinder heads 304 There is a top cover 306, the main piston 309 is connected with the crankshaft 307 through the crankshaft connecting rod 308, the cylinder head 304 is provided with the intake port 121, the intake valve 111 and the intake valve driving mechanism, and the cylinder 30 is provided with the exhaust port 122 and Exhaust valve 125 and exhaust valve driving mechanism, exhaust valve 125 and exhaust valve driving mechanism can adopt the same or similar mechanism as the prior art, but there is a special exhaust and suction mechanism, according to the three-stroke process described in the present invention Principle works.

[0073] The speci...

Embodiment 2

[0077] Such as Figure 8 As shown, the second embodiment is a three-stroke engine of the present invention with an electric ignition device added on the basis of the first embodiment. Its basic structure is the same as that of the first embodiment, but its auxiliary piston connecting rod 102 is a tubular hollow rod. The ignition device includes an ignition head 201 and an ignition needle 202. The ignition head 201 is arranged on the end of the auxiliary piston connecting rod 102 on the side of the auxiliary piston lower surface 101b, and the ignition needle 202 is installed in the auxiliary piston connecting rod 102 and connected with the auxiliary piston. The rod 102 is insulated, the needle of the ignition needle 202 and the ignition head 201 maintain an ignition gap, and the tail end of the ignition needle 202 is a movable contact 202a, which is connected with the static ignition controller 205 with the movement of the auxiliary piston connecting rod 102. The contact 204a i...

Embodiment 3

[0079] Such as figure 2 and Figure 11 As shown, the engine adopts the direct injection fuel supply mode in the cylinder. The fuel supplied by the fuel supply mechanism of the engine is directly sprayed into the thermal expansion chamber through the fuel nozzle 128. There is no ignition device, and the ignition is achieved by compression ignition. The air guide channel of the engine is composed of Four groups of cylinder air guide passages 123 and piston air guide passages 109 are uniformly distributed relative to the center line of the cylinder 30. The fuel supply mechanism is connected to the two fuel nozzles 128 at the joints of the air guide passage 109 . The fuel nozzle 128 can be fuel injection or gas injection according to different choices of fuel.

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Abstract

The invention discloses a three-stroke reciprocating piston type engine which has the advantages of a four-stroke engine and a two-stroke engine and overcomes the defects of the four-stroke engine and the two-stroke engine. An assistant piston for air exhaust and suction is arranged between a main piston and a cylinder cover of the engine; the assistant piston is driven by an assistant piston driving mechanism to finish air exhaust and suction functions in air exhaust and suction strokes; an upper chamber between the assistant piston and the cylinder cover is used for air suction, and a lowerchamber between the main piston and the assistant piston is used for air exhaust; with the lower chamber as a thermal expansion chamber, the assistant piston is pushed by the main piston to reset in the compression stroke and finish an assistant compression function; at the terminal stage of compression stroke, compressed air in the upper chamber is completely extruded into the thermal expansion chamber through an air guide channel and is subjected to compression ignition in the thermal expansion chamber directly or ignited by an ignition device; and the main piston finishes a working stroke and a compression stroke and helps the assistant piston reset. The three-strike reciprocating piston type engine has the advantages of low emission, high efficiency and high power per liter and is especially suitable for occasions requiring engines to have high power, small size, light weight and low emission.

Description

technical field [0001] The invention relates to a reciprocating piston internal combustion engine. Background technique [0002] Since the advent of the piston internal combustion engine, it has been the mainstream of the engine family, especially in the fields of vehicles, motorcycles, ships and other vehicles. [0003] Now widely used piston internal combustion engines are divided into four-stroke and two-stroke according to the working principle. In a traditional four-stroke or two-stroke engine, the definition of its stroke is: the process of the piston moving from one dead center to another dead center. A four-stroke engine converts thermal energy into mechanical energy through four working processes of intake air, compression, thermal expansion, and exhaust. Four strokes do work once, which is a working cycle of a four-stroke engine. The two-stroke engine does work once every two strokes, uses the intake air to exhaust in the later stage of thermal expansion, and com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B75/28F02B75/02F02M25/03
Inventor 郑安庆
Owner STATE GRID CORP OF CHINA
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