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Direct-current ventilation four-stroke engine

A four-stroke engine and four-stroke technology, applied to engine components, combustion engines, machines/engines, etc., can solve problems such as excessive scavenging, high heat load, and large flow resistance, and achieve high efficiency, small heat load, and smooth flow The effect of low resistance

Inactive Publication Date: 2013-01-16
ZEROQ SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Piston engines are divided into four-stroke engines and two-stroke engines. Generally speaking, four-stroke engines need to arrange two types of valves, intake valves and exhaust valves, on the cylinder head, which inevitably results in small gas flow flux and low flow rate. Large resistance; two-stroke engines discharge exhaust gas from the cylinder through scavenging and introduce fresh air into the cylinder. This method often has problems of incomplete or excessive scavenging and high heat load

Method used

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  • Direct-current ventilation four-stroke engine

Examples

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Embodiment 1

[0035] Such as figure 1 The shown direct current ventilation four-stroke engine includes a cylinder 1 and a piston 2, the piston 2 is arranged in the cylinder 1, the piston 2 cooperates with the cylinder 1, and on the side wall of the cylinder 1 Air inlet 3 is established, and described air inlet 3 is set as several, and exhaust valve 5 is established on described cylinder 1, and described exhaust valve 5 is subjected to described DC ventilation four-stroke engine to press vacuum charging stroke- —compression stroke—expansion power stroke—exhaust stroke The exhaust control mechanism 6 working in the four-stroke working mode is controlled, and the exhaust valve 5 is arranged on the cylinder head 4 of the cylinder 1 .

[0036] The specific working process is as follows: when the exhaust stroke of the last cycle of the piston 2 is over, the engine starts the vacuum charging stroke (that is, equivalent to the suction stroke of a traditional four-stroke engine), and at this time t...

Embodiment 2

[0038] Such as figure 2 The difference between the direct-flow ventilation four-stroke engine shown in Embodiment 1 is that the exhaust valve 5 is arranged on the side wall of the cylinder 1 corresponding to the top dead center of the piston 2 .

Embodiment 3

[0040] Such as image 3 The difference between the straight-flow ventilation four-stroke engine shown in Embodiment 1 is that two pistons 2 are arranged oppositely in one cylinder 1, and the piston 2 is arranged along the side wall of the cylinder 1. Two groups of intake ports 3 are arranged in the axial direction of the cylinder, and the exhaust valve 5 is arranged on the side wall of the cylinder 1 between the two groups of intake ports 3 .

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Abstract

The invention discloses a direct-current ventilation four-stroke engine. The engine comprises an air cylinder and a piston, wherein the piston is arranged in the air cylinder and is matched with the air cylinder; the side wall of the air cylinder is provided with an air inlet; the air cylinder is provided with an exhaust valve; and the exhaust valve is controlled by an exhaust control mechanism which enables the engine to work in a four-stroke operating mode including such four strokes as vacuum inflation stroke, compression stroke, expansion work stroke and exhaust stroke. According to the direct-current ventilation four-stroke engine disclosed by the invention, the air suction and exhaust circulation resistances are low, the thermal load is low, and the efficiency is high.

Description

[0001] technical field [0002] The invention relates to the field of internal combustion engines, in particular to a four-stroke engine. Background technique [0003] Piston engines are divided into four-stroke engines and two-stroke engines. Generally speaking, four-stroke engines need to arrange two types of valves, intake valves and exhaust valves, on the cylinder head, which inevitably results in small gas flow flux and low flow rate. High resistance; two-stroke engines discharge the exhaust gas from the cylinder in the form of scavenging, and introduce fresh air into the cylinder. This method often has the problems of incomplete or excessive scavenging and high heat load. Therefore, it is necessary to invent a novel engine with large air intake flux, low heat load and thorough ventilation. Contents of the invention [0004] In order to solve the above problems, the technical scheme proposed by the present invention is as follows: [0005] A direct-flow ventilation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B25/08F02B75/28F02F1/22F01L11/02F01L1/04F01N5/04
CPCY02T10/146Y02T10/16Y02T10/12
Inventor 靳北彪
Owner ZEROQ SCI & TECH
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