D88尊龙1、 曲柄連桿機構 曲柄連桿機構是發起機實踐工作循環，完成能量轉換的主要運動部件。它由機體組、活塞連桿組和曲軸飛輪組等組成。在做功過程中，活塞接受燃氣壓力在氣缸內做直線運動，經過連桿轉換成曲軸的旋轉運動，并從曲軸對外輸出動力，而在進氣、緊縮和排氣過程中，飛輪釋放能量把曲軸的旋轉運動轉化成活塞的直線運動。
1. The crank-connecting rod mechanism is the main moving part of the engine's practical work cycle to complete the energy conversion. It is composed of body group, piston connecting rod group and crankshaft flywheel group. In the process of work, the piston receives the gas pressure to move in a straight line in the cylinder, converts the connecting rod into the rotary motion of the crankshaft, and outputs power from the crankshaft to the outside. In the process of intake, contraction and exhaust, the flywheel releases energy to convert the rotary motion of the crankshaft into the linear motion of the piston.
2、 配氣機構 配氣機構的功用是依據發起機的工作次第和工作過程，定時開啟、關閉進氣門和排氣門，使可燃混合氣或空氣進入氣缸，并使廢氣從氣缸內排出，完成換氣過程。配氣機構大多數采用頂置氣門式配氣機構，普通由氣門組、氣門傳動組和氣門驅動組組成。
D88尊龙2. The function of valve train of valve train is to open and close the intake valve and exhaust valve regularly according to the working order and process of the engine, so that combustible mixture or air can enter the cylinder, and exhaust gas can be discharged from the cylinder to complete the ventilation process. The valve train mostly adopts the top valve train, which is generally composed of valve train, valve drive train and valve drive train.
D88尊龙3、 燃料供應系 汽油機燃料供應系的功用是依據發起機的請求，配制出一定數量和濃度的混合氣，供入 氣缸，并將熄滅后的廢氣從氣缸內排出到大氣中，柴油機燃料供應系的功用是把柴油和空氣分別供入氣缸，在熄滅室內構成混合氣并熄滅，后將熄滅后的廢氣排出。 沼氣發電機機
D88尊龙3. The function of the fuel supply system of gasoline engine is to prepare a certain amount and concentration of mixture for the cylinder according to the request of the initiator, and discharge the exhaust gas from the cylinder to the atmosphere. The function of the fuel supply system of diesel engine is to supply diesel oil and air to the cylinder separately, to form a mixture in the extinguishing chamber and extinguish it, and finally to exhaust the exhaust gas after extinguishing. Out. Biogas Generator
D88尊龙4、 光滑系 光滑系的功用是向作相對運動的零件外表保送定量的清潔光滑油，以完成液體摩擦，減小摩擦阻力，減輕機件的磨損，并對零件外表停止清洗和冷卻，光滑系通常由光滑油道、機油泵、機油濾清器和一些閥門等組成。
4. The function of smooth system is to deliver quantitative clean and smooth oil to the surface of parts in relative motion to complete liquid friction, reduce friction resistance, reduce wear and tear of parts, and stop cleaning and cooling the surface of parts. The smooth system is usually composed of smooth oil passage, oil pump, oil filter and some valves.
D88尊龙5、 冷卻系 冷卻系的功用是將受熱零件吸收的局部熱量及時分發進來，保證發起機在適合的溫度狀態下工作。水冷發起機的冷卻系通常由冷卻水套、水泵、風扇、水箱、節溫器等組成。
5. The function of cooling system is to distribute the local heat absorbed by the heated parts in time to ensure that the starter works at the most suitable temperature. The cooling system of water-cooled starter is usually composed of cooling water jacket, water pump, fan, water tank, thermostat, etc.
D88尊龙6、點火系 可以按時在火花塞電極間產生電火花的全部設備成為點火系。 In a gasoline engine, the combustible mixture in the cylinder is ignited by electric spark. For this reason, a spark plug is installed on the cylinder head of the gasoline engine, and the head of the spark plug deepens the extinguishing chamber. The ignition system is usually composed of batteries, generators, distributors, pre-point coils and spark plugs.
D88尊龙7、 啟動系 發起機由靜止狀態過渡到工作狀態，必需先用外力轉動發起機的曲軸，使活塞作往復運動，氣缸內的可燃混合氣熄滅收縮做功，推進活塞向下運動使曲軸旋轉，發起機才干自行運轉，工作循環才干自動停止。因而，曲軸在外力作用下開端轉動到發起機開端自動地怠速運轉的全過程，稱為發起機的啟動。完成啟動過程所需的安裝，稱為發起機的啟動系。 汽油機由以上兩大機構和五大系統組成，即由曲柄連桿機構、配氣機構、熄滅供應系、光滑系、冷卻系、點火系和啟動系組成；
D88尊龙7. Start-up system initiator transits from static state to working state. It is necessary to rotate the crankshaft of the initiator with external force to make the piston move back and forth, extinguish and contract the combustible mixture in the cylinder to do work, push the piston down to make the crankshaft rotate, the initiator can run itself, and the working cycle can stop automatically. Therefore, the whole process of the crankshaft turning to the start of the engine automatically idling under the external force is called the start of the engine. The installation required to complete the startup process is called the startup system of the initiator. The gasoline engine consists of the above two mechanisms and five systems, namely, crank connecting rod mechanism, valve distribution mechanism, quenching supply system, smooth system, cooling system, ignition system and starter system.
Diesel engine is composed of the above two major mechanisms and four major systems, namely, crank-connecting rod mechanism, valve distribution system, fuel supply system, smooth system, cooling system and starter system. Diesel engine is compression-ignited and does not require ignition system.
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