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Air inlet device with two air inlet channels for two-stroke engine

A technology of dual air inlets and air intake devices, which is applied to exhaust devices, engine components, machines/engines, etc., can solve the problems of long time, long distance for fresh air to reach the end of the flow channel, etc., to optimize tissue combustion and avoid The effect of blocking air flow and increasing air intake

Inactive Publication Date: 2011-11-02
CHINA NORTH IND GRP NO 70 RES INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the above-mentioned deficiencies, and provide a method that solves the problems that the fresh air in a single air inlet reaches the end of the flow path too long, and the time is too long, which fully improves the air intake and reduces the Two-stroke engine dual-port intake device with pressure loss

Method used

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  • Air inlet device with two air inlet channels for two-stroke engine
  • Air inlet device with two air inlet channels for two-stroke engine
  • Air inlet device with two air inlet channels for two-stroke engine

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Embodiment Construction

[0009] A two-stroke engine double intake port air intake device, which comprises an intake piston 1, a cylinder liner 3 and an exhaust piston 6, the intake piston 1 and the exhaust piston 6 are arranged in the cylinder liner 3, and the outside of the cylinder liner 3 An annular air inlet 2 and an annular exhaust port 5 are arranged on the circumference of the circle, the double exhaust passage 7 is arranged on the annular exhaust port 5, the fuel injector installation port 4 is arranged on the cylinder liner 3, and the double exhaust passage 7 The airway cross-sectional area shrinkage rate is 10-12mm 2 / mm, fresh air enters from both ends of the double air inlet 7.

[0010] Such as figure 1 As shown, the intake piston 1 and the exhaust piston 6 move toward each other to compress the air together, fresh air enters from both ends of the double intake duct 7, enters the cylinder through the annular intake port 5 of the cylinder, and the air duct is designed as a reduced type. T...

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Abstract

The invention relates to a air inlet device with two air inlet channels for a two-stroke engine, which comprises an air inlet piston (1), a cylinder sleeve (3) and an exhaust piston (6), wherein the air inlet piston (1) and the exhaust piston (6) are arranged in the cylinder sleeve (3); an annular air inlet (2) and an annular exhaust opening (5) are circumferentially arranged on the excircle of the cylinder sleeve (3); double exhaust channels (7) are arranged on the annular exhaust opening (5); an oil sprayer installation opening (4) is arranged on the cylinder sleeve (3); the air channel cross-sectional area shrinkage rate of the double exhaust channels (7) is 10-12mm<2> / mm; and the fresh air is charged from both ends of double air inlet channels (7). The invention has the advantages of improving air inlet amount, reducing the pressure loss, preventing the problem of airflow congestion caused by overlarge initial airflow speed and ensuring the formation of isobaric airflow in the air channel.

Description

technical field [0001] The invention belongs to the field of diesel engines, and in particular relates to a double-intake port intake device for a two-stroke engine. Background technique [0002] During the ventilation process of the two-stroke engine, unlike the four-stroke engine, there is a piston forced exhaust process, and the fresh air and the exhaust gas will inevitably be mixed to a certain extent. In order to clean the exhaust gas, most of the mixed air must be removed. The gas is discharged, so that part of the fresh air is directly discharged out of the cylinder without participating in the combustion, so the air consumption of the two-stroke engine is more than that of the four-stroke engine. According to statistics, the fresh air consumption of the four-stroke diesel engine is 6.79~8.83kg / kW·h , while the two-stroke diesel engine is 10.19 ~ 11.55kg / kW h. And the duration of air exchange of two-stroke engine is 120-160° crank angle, while the time of air exchang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B75/28F02F1/22F02M61/14F02M35/104F01N13/00
Inventor 李建新于红胜张东英
Owner CHINA NORTH IND GRP NO 70 RES INST
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