Engine with pre-combustion chamber and working mode of engine

A pre-combustion chamber and engine technology, which is applied to combustion engines, internal combustion piston engines, engine components, etc., and can solve problems such as easy smoke and difficult ignition due to the mixed concentration of oil and gas

Active Publication Date: 2021-06-22
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To this end, an object of the present invention is to propose an engine with a pre-chamber, which is suitable for the combustion of methanol, gasoline, kerosene or diesel oil, while being able to solve the problems of

Method used

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  • Engine with pre-combustion chamber and working mode of engine
  • Engine with pre-combustion chamber and working mode of engine
  • Engine with pre-combustion chamber and working mode of engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 with 2 , the engine with pre-combustion chamber in this embodiment is a two-stroke heavy oil engine with pre-combustion chamber, comprising a body, the body includes engine block 1, piston 2, cylinder head 3, crankshaft 4 and connecting rod 5, and the engine The connecting relation between cylinder block 1, piston 2, cylinder head 3, crankshaft 4 and connecting rod 5 is identical with the connecting relation of the two-stroke engine in the prior art, has scavenging passage 6, air inlet on the engine block 1 It communicates with the exhaust port, the scavenging air channel 6 and the air intake port, and the air intake pipe 7 is installed at the air intake port, and the air intake pipe 7 is provided with a throttle body 8 for controlling the air intake volume, and the exhaust port is equipped with an exhaust valve. The air pipe 9 and the exhaust pipe 9 are provided with an exhaust post-processor 10, the main combustion chamber 11 is formed between the cylind...

Embodiment 2

[0041] see image 3 , the engine with the pre-combustion chamber in this embodiment is a four-stroke heavy oil engine with the pre-combustion chamber. The intake port and the exhaust port of the stroke heavy oil engine are all arranged on the cylinder head 3, and the exhaust port is provided with an exhaust valve 31, and the engine block 1 of the four-stroke heavy oil engine with a pre-combustion chamber has no scavenging passage 6, In addition, the injection advance angle of the main injector 14 is 330°-90° before the compression top dead center, that is, the rotation angle of the crankshaft 4 is 330°-90° before the compression top dead center, and the injection advance angle of the auxiliary injector 16 is compression 360°-180° before the top dead center, that is, the 4 rotation angles of the crankshaft are 360°-180° before the compression top dead center.

[0042] The working mode of the four-stroke heavy fuel oil engine with pre-combustion chamber disclosed in this embodi...

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Abstract

The invention discloses an engine with a pre-combustion chamber and a working mode of the engine, and relates to the technical field of engines. The engine with the pre-combustion chamber comprises an engine body, wherein the engine body is provided with the pre-combustion chamber, the pre-combustion chamber is communicated with a main combustion chamber of the engine body through a connecting channel, the pre-combustion chamber is provided with an auxiliary oil injector, a first spark plug and a glow plug, the main combustion chamber is provided with a main oil injector and a second spark plug, the first spark plug and the glow plug are used for igniting an oil-gas mixture in the pre-combustion chamber, the auxiliary oil injector is used for injecting oil into the pre-combustion chamber, the main oil injector is used for injecting the oil into the main combustion chamber, and the second spark plug is used for igniting the oil-gas mixture in the main combustion chamber. According to the engine with the pre-combustion chamber, the pre-combustion chamber, the main oil injector, the auxiliary oil injector, the first sparking plug and the second sparking plug are arranged on an air cylinder cover, ignition can be achieved when the concentration of mixed gas in the engine is any concentration, switching of working modes under different mixed gas concentrations is flexibly achieved, and the operation requirements of the engine under various working conditions are met.

Description

technical field [0001] The invention relates to the technical field of engines, more specifically relates to an engine with a pre-combustion chamber and its working method. Background technique [0002] Compared with the four-stroke engine, the two-stroke engine has the characteristics of small size, light weight, fewer parts, high modularity, high reliability and maintainability, and the two-stroke engine also has a larger power-to-weight ratio, so , two-stroke engines have been widely used in fields requiring high power-to-weight ratios, such as in the military and aviation fields. The engine can only be ignited, that is, ignited by a spark plug or a glow plug, otherwise the power-to-weight ratio is difficult to meet the requirements, and the direct injection of fuel in the cylinder is used to avoid fuel scavenging loss. However, when the direct injection method and spark ignition combustion method are used, the atomization time after fuel injection is short and the time ...

Claims

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Application Information

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IPC IPC(8): F02B19/10F02B19/18F02B75/02F02B77/04F02D9/08F02D41/00F02D41/30F02D41/38F02F1/24F02M61/14F02P19/02
CPCF02B19/108F02B19/1085F02B19/18F02B75/02F02F1/24F02F1/242F02M61/14F02D9/08F02D41/0002F02B77/04F02D41/3094F02D41/38F02P19/02F02B2075/025Y02T10/12
Inventor 曾科曾凯宁乐杨博习成训黄佐华
Owner XI AN JIAOTONG UNIV
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