WO2020147678A1 - Générateur linéaire à combustion interne à pistons opposés et à trois temps - Google Patents

Générateur linéaire à combustion interne à pistons opposés et à trois temps Download PDF

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Publication number
WO2020147678A1
WO2020147678A1 PCT/CN2020/071764 CN2020071764W WO2020147678A1 WO 2020147678 A1 WO2020147678 A1 WO 2020147678A1 CN 2020071764 W CN2020071764 W CN 2020071764W WO 2020147678 A1 WO2020147678 A1 WO 2020147678A1
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WO
WIPO (PCT)
Prior art keywords
piston
cylinder
intake valve
air
cylinder barrel
Prior art date
Application number
PCT/CN2020/071764
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English (en)
Chinese (zh)
Inventor
田维
李锦会
伍欢
韩志强
吴学舜
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西华大学
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Application filed by 西华大学 filed Critical 西华大学
Publication of WO2020147678A1 publication Critical patent/WO2020147678A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type

Definitions

  • the invention belongs to the field of piston internal combustion engines, in particular to an opposed piston three-stroke internal combustion engine with a linear generator set, which can be used to organize the combustion process of an ignition type and a compression ignition type free piston internal combustion generator set.
  • the present invention provides an opposed piston three-stroke internal combustion linear generator set.
  • the technical solution adopted by the present invention is:
  • An opposed-piston three-stroke internal combustion linear generator set comprising a body, from which a coil winding, an armature and a main shaft are arranged in order from the main body to the inside of the machine body, and a main shaft position sensor is fixed on the main shaft;
  • a first cylinder barrel is fixed on the left side of the body, a first piston is arranged in the first cylinder barrel, and a first piston ring is arranged in the ring groove of the first piston; the left and right sides of the first piston are respectively A first cylinder chamber and a first air chamber; a first hydraulic exhaust valve and a first spark plug are fixed on the first cylinder barrel on the side of the first cylinder chamber, and the head of the first hydraulic exhaust valve faces the first In the cylinder chamber, a first air inlet is opened on the first cylinder barrel on the side of the first air chamber, and the first air inlet is provided with a one-way valve that only allows air to flow into the engine; the first piston is provided with The first intake valve, the head of the first intake valve faces the first cylinder chamber; a first timing cam is installed on the first cylinder barrel, and the first timing cam is connected to the first timing cam through the first camshaft. Electric motor, and the first camshaft is perpendicular to the first intake valve, and the position of the first timing cam
  • a second cylinder barrel is fixed on the right side of the body, a second piston is arranged in the second cylinder barrel, and a second piston ring is arranged in the ring groove of the second piston; the left and right sides of the second piston are respectively The second air chamber and the second cylinder chamber.
  • a second hydraulic exhaust valve and a second spark plug are fixed on the second cylinder barrel on the side of the second cylinder chamber.
  • the head of the second hydraulic exhaust valve faces the second In the cylinder cavity, a second air inlet is opened on the second cylinder barrel on the side of the second air cavity, and the second air inlet is equipped with a one-way valve that only allows air to flow into the engine;
  • the second piston is provided with The second intake valve, the head of the second intake valve faces the second cylinder cavity;
  • a second timing cam is installed on the second cylinder barrel, and the second timing cam is connected to the second timing cam through the second camshaft. Electric motor, and the second camshaft is perpendicular to the second intake valve, and the position of the second timing cam corresponds to the rear position of the second intake valve;
  • a first piston is fixed on the left side of the spindle, and a second piston is fixed on the right side to form an opposed piston; it also includes an electronic control unit ECU that receives information from the spindle position sensor, including position information and frequency information According to the information received from the spindle position sensor, the ignition timing of the first spark plug and the second spark plug, the fuel injection amount of the fuel injector, and the rotation of the first motor and the second motor are controlled.
  • first air inlets there are two first air inlets and two second air inlets.
  • Figure 1 is a schematic diagram of the structure of a three-stroke internal combustion linear generator set with opposed pistons according to the present invention.
  • an opposed-piston three-stroke internal combustion linear generator set has a structure including a generator part, a free piston internal combustion engine part and a control system, as follows:
  • Generator part including the body 1, from the body 1 to the inside of the body, a coil winding 2 (fixed part, fixed to the body 1), armature 3 (movable part) and a spindle 4 are arranged in sequence from the body 1 to the inside of the body.
  • the spindle position sensor is fixed on the spindle 4 5;
  • Free piston internal combustion engine part (including cylinder barrel, two sets of piston components, two sets of intake systems, two sets of exhaust systems, two spark plugs, etc.): a first cylinder barrel 102 is fixed on the left side of the body 1, the A first piston 110 is arranged in the first cylinder barrel 102, and a first piston ring 111 is arranged in the ring groove of the first piston 110; the left and right sides of the first piston 110 are the first cylinder cavity 103 and the first air cavity respectively 106; The first hydraulic exhaust valve 101 and the first spark plug 112 are fixed on the first cylinder 102 on the side of the first cylinder chamber 103 (the first hydraulic exhaust valve 101 is equipped with hydraulic components, which can drive the first A hydraulic exhaust valve 101 opens and closes; the first spark plug 112 is installed next to the first hydraulic exhaust valve 101), the head of the first hydraulic exhaust valve 101 faces the first cylinder chamber 103, and is in the first air chamber 106 The first cylinder tube 102 on this side is provided with a first air inlet 105, and the first
  • a second cylinder barrel 202 is fixed on the right side of the body 1, a second piston 210 is provided in the second cylinder barrel 202, and a second piston ring 211 is provided in the ring groove of the second piston 210;
  • the left and right sides of the piston 210 are respectively a second air chamber 206 and a second cylinder chamber 203.
  • a second hydraulic exhaust valve 201 and a second spark plug 212 (No. 2) are fixed on the second cylinder barrel 202 on the side of the second cylinder chamber 203.
  • a hydraulic component is installed on the second hydraulic exhaust valve 201, which can drive the second hydraulic exhaust valve 201 to open and close; the second spark plug 212 is installed beside the second hydraulic exhaust valve 201), the second hydraulic exhaust valve The head of 201 faces the second cylinder cavity 203.
  • a second air inlet 205 is opened on the second cylinder barrel 202 on the side of the second air cavity 206.
  • the second air inlet 205 is installed with a device that only allows air to flow into the engine.
  • One-way valve; the second piston 210 is provided with a second intake valve 204, the head of the second intake valve 204 faces the second cylinder cavity 203; a second timing cam is installed on the second cylinder barrel 202 207.
  • the second timing cam 207 is connected to the second motor 209 through the second camshaft 208, and the second camshaft 208 is perpendicular to the second intake valve 204.
  • the second timing cam 207 is positioned at the same position as the second intake valve.
  • the position of the tail of the door 204 corresponds;
  • a first piston 110 is fixed on the left side of the main shaft 4, and a second piston 210 is fixed on the right side to form opposed pistons, that is, two pistons are installed opposite to each other at both ends of the main shaft 4, and the piston and the armature 3 are installed coaxially ;
  • Control system including the electronic control unit ECU, which receives information from the spindle position sensor 5, including position information and frequency information, and controls the first spark plug 112 and the second spark plug according to the received spindle position sensor 5 information
  • the ignition timing of 212, the fuel injection volume of the fuel injector, and the rotation of the first motor 109 and the second motor 209 (the first motor 109 and the second motor 209 drive the first camshaft 108 and the second camshaft 208 to rotate respectively, and finally
  • the distance between the timing cam on the camshaft and the tail of the intake valve can be changed, which is equivalent to changing the lift curve of the engine valve).
  • first hydraulic exhaust valve 101 there are two pairs of the first hydraulic exhaust valve 101, the first intake valve 104 and the first timing cam 107; the second hydraulic exhaust valve 201, the second intake valve There are also two pairs of 204 and second timing cam 207. There are two first air inlets 105, and there are also two second air inlets 205.
  • the intake and exhaust valves of one cylinder When the engine is stopped, the intake and exhaust valves of one cylinder must be fully closed. Take the fully closed valve of the first cylinder (the cylinder on the left in Figure 1) as an example. In the stop state, the first cylinder is fully closed and the cylinder contains premixed gas. At this time, the first cylinder is controlled to ignite and the pressure of the first cylinder rises. Push the moving part to the right, the second cylinder (the right cylinder in Figure 1) is compressed, and compressed to a suitable position, the second cylinder ignites, and the engine can be started by reciprocating.
  • the pressure in the first cylinder will rise sharply, which will eventually push the piston to the right; when the piston moves to a certain position, the first hydraulic exhaust valve 101 opens for exhaust, and the second intake valve 204 There is no definite relationship between closing and opening of the first hydraulic exhaust valve 101; after the second intake valve 204 is closed, the pressure in the second cylinder rises and ignites at a certain moment; at the same time, the second air chamber 206 becomes larger, and the air is under the action of vacuum Enter the second air chamber 206; at the same time, the first air chamber 106 becomes smaller. Because the air chamber has a one-way valve, the pressure in the first air chamber 106 will rise, which is equivalent to pressurization. When it moves to a certain position The first intake valve 104 opens, and air will surely enter the first cylinder under the action of positive pressure. After the second cylinder is ignited, the process similar to that of the first cylinder is repeated.
  • the cylinder of the engine includes 3 independent strokes: (1) Intake and compression strokes.
  • the intake valve on the piston opens, under the action of positive air pressure in the air chamber. , The air enters the cylinder cavity from the air cavity; after the intake valve is closed, the piston begins to compress the cylinder volume from the distal end.
  • the main function of this stroke is to compress the air to prepare for ignition.
  • the hydraulic exhaust valve opens and the engine starts to exhaust freely; After the free exhaust reaches a certain level, the intake valve opens, and under the action of the positive pressure air in the air cavity, air enters the cylinder cavity to sweep out the exhaust gas in the cylinder cavity.
  • Air intake and pre-compression stroke When the piston compresses the air in the cylinder cavity, the vacuum formed on the back of the piston draws air into the air cavity of the engine from the outside; when the high-pressure gas in the cylinder cavity does work on the piston, The back of the piston pre-compresses the air entering the engine air chamber.

Abstract

L'invention concerne un générateur linéaire à combustion interne, à pistons opposés et à trois temps comprenant un corps de machine (1) et les composants suivants disposés séquentiellement en allant vers l'intérieur du corps de la machine (1) : un bobinage (2), une armature (3) et un arbre principal (4). Un capteur de position d'arbre principal (5) est fixé à l'arbre principal (4). Deux pistons (110, 210) sont disposés de manière opposée aux deux extrémités de l'arbre principal (4) et installés de façon coaxiale à l'armature (3). Chaque piston est pourvu de parties correspondantes comprenant une soupape d'échappement hydraulique (101, 201), une soupape d'admission d'air (104, 204), une entrée d'air (105, 205) et une bougie d'allumage (112, 212). Les soupapes d'admission d'air sont disposées au niveau de deux pistons opposés, ce qui permet de surmonter le défaut de structure affectant un orifice de transfert d'un moteur à deux temps classique. De plus, la reconfiguration de la course du moteur permet de surmonter les inconvénients inhérents aux moteurs à deux temps classiques, améliorant ainsi les performances d'échappement et de consommation de carburant du moteur.
PCT/CN2020/071764 2019-01-16 2020-01-13 Générateur linéaire à combustion interne à pistons opposés et à trois temps WO2020147678A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910041480.9 2019-01-16
CN201910041480.9A CN109736945A (zh) 2019-01-16 2019-01-16 一种对置活塞三冲程内燃直线发电机组

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WO2020147678A1 true WO2020147678A1 (fr) 2020-07-23

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CN109736945A (zh) * 2019-01-16 2019-05-10 西华大学 一种对置活塞三冲程内燃直线发电机组
CN111365121B (zh) * 2019-12-31 2022-08-05 钱裕智 由预增压换排气自由活塞发动机驱动的直线增程发电机
CN111237078A (zh) * 2020-01-16 2020-06-05 西华大学 一种二冲程发动机的活塞连杆机构
CN111156079B (zh) * 2020-01-16 2021-07-20 刘昌国 一种单缸单冲程发动机驱动直线型增程器
CN113389611A (zh) * 2020-03-12 2021-09-14 赵天安 一种进气调节机构、一种发动机和一种气动马达
CN112112733A (zh) * 2020-09-22 2020-12-22 东风汽车集团有限公司 一种发动机的气门驱动结构及其使用方法
CN113047951B (zh) * 2021-03-12 2022-02-11 哈尔滨工程大学 一种基于分缸式热力学循环的自由活塞发电机

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