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Engine Fuel Injection System

A fuel injection system and engine technology, which is applied to engine components, machines/engines, engine lubrication, etc., can solve problems such as high cost, complicated crankcase paths, and insufficient lubricating oil for the inner wall of the upper cylinder of the crankshaft, and achieves structural The effect of simple, excellent lubrication

Active Publication Date: 2017-12-29
SUZHOU CLEVA PRECISION MACHINERY & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology uses a special oil tank around rotating blades mounted on the crankshaft to create an oil mist, but designing the engine this way is wider, heavier and more expensive
There are also engines that spray lubricating oil to lubricate the crankcase, but the oil injection port is usually located on the crankshaft, resulting in insufficient lubricating oil on the inner wall of the cylinder on the upper part of the crankshaft, which affects the lubrication effect
[0003] Engine lubricating oil is usually stored in the lubricating oil tank. When the engine is started, the lubricating oil enters the crankcase from the lubricating oil tank for lubrication. The existing engine is usually provided with an oil injection port on the crankshaft, and the lubricating oil is sprayed into the crankcase through the oil injection port. , the defect is that the crankshaft is located at the lower part of the cylinder, and the oil sprayed from the oil injection port on the crankshaft is not enough to fully lubricate the cylinder wall
At the same time, the path from the lubricating oil tank to the crankcase is complicated and inconvenient to process

Method used

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Embodiment Construction

[0019] The present invention will be further described below in combination with specific embodiments.

[0020] As shown in the figure, the four-stroke engine of the preferred embodiment of the present invention includes a crankcase 1 , an oil pan 2 , a cam chamber 3 , a rocker chamber 4 and an air filter 6 . The oil pan 2 is used to store lubricating oil. Above the oil pan 2 is the crankcase 1. The crankshaft 10 is arranged in the crankcase 1 and engaged with the piston 7 in the cylinder 8. The oil pan 2 and the crankcase 1 communicate through the oil supply passage 21. A distributing chamber 5 is provided below the crankcase 1, and the crankcase and the distributing chamber are communicated through the first oil delivery channel 15. The distributing chamber 5 can separate oil and gas, and the separated liquid lubricating oil flows into the oil pan 2 through the small hole at the bottom of the separation chamber. The remaining gaseous lubricating oil passes through, and the s...

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PUM

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Abstract

The invention discloses an engine oil injection system, which comprises an oil supply passage connecting an oil pan and a crankcase, through which lubricating oil enters the crankcase, one end of the oil supply passage is an oil injection port, and the oil injection port is arranged on a cylinder On the side wall, and located below the bottom dead center of the piston, the engine fuel injection system provided by the invention can fully lubricate the engine cylinder wall and crankcase, simplify the passage from the lubricating oil tank to the crankshaft, and facilitate manufacturing.

Description

[0001] The invention relates to an engine fuel injection system. Background technique [0002] Like portable lawn mowers (shearers) and backpack working machines for grass and trees, traditional two-stroke and four-stroke small general-purpose engines have been widely used as engines that drive operators to carry or carry work machines. engine. Due to stricter pollutant emission regulations, there is an increasing need to change the driving source from a two-stroke to a four-stroke engine. However, the four-stroke engine has a more complex lubrication system, which makes the engine Not very effective. Lubrication has become the main design problem of each engine manufacturer, and now only Honda Company is used for mass production of four-stroke engines that can work under various inclination angles according to the patented technology of EP835987. The technology uses a special oil tank around rotating blades mounted on the crankshaft to create an oil mist, but designing the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F1/20F02F7/00
CPCF01M1/08F01M1/04F01M2001/126F02B63/02
Inventor 孔钊郭宁陈干冯可亚
Owner SUZHOU CLEVA PRECISION MACHINERY & TECH