Glossary ofEngine Parts

1. Aftercooler Core (后冷器芯): A heat exchanger that cools the compressed air from the turbocharger before it enters the engine. Installed in the intake system. Example:

   Caterpillar CAT 3412 Engine

   uses

   Aftercooler Core 2W-6593

   . Part Number:

   2W-6593

2. Alternator (交流发电机):  A generator that converts mechanical energy to electrical energy, charging the battery and powering electrical systems. Mounted on the engine. Example:

   Caterpillar CAT C2.2 Engine

   uses

   12V 40A Alternator 394-3492

   . Part Number:

   394-3492

3. Belt Tensioner (皮带张紧器): A device that maintains the correct tension on engine belts, ensuring proper function of driven components. Located on the engine's accessory drive system. Example:

   Caterpillar CAT C7 Engine

   uses

   Belt Tensioner 222-2880

   . Part Number:

   222-2880

4. Breather (通气阀): A valve that allows gases to escape from the crankcase while preventing contaminants from entering. Located on the valve cover or crankcase. Example:

   Caterpillar CAT C18 Engine

   uses

   Breather 183-3873

   . Part Number:

   183-3873

5. Dipstick (油尺): A rod used to measure the oil level in the engine's oil pan.  Inserted into the dipstick tube on the engine block. Example:

   Caterpillar CAT C2.2 Engine

   uses

   Dipstick 293-4781

   . Part Number:

   293-4781

6. Floating Seal (浮动油封): A type of mechanical seal used in rotating joints to prevent leakage of fluids. Used in various locations like final drives and transmissions. Example:

   Caterpillar CAT C18 Engine

   uses

   Floating Seal 188-2103

   . Part Number:

   188-2103

7. Joystick Controller (操纵杆控制器): An input device used to control the movements and functions of heavy machinery. Located in the operator's cabin. Example:

   Caterpillar CAT 3126 Engine

   Excavator uses

   Joystick Controller 297-4587

   . Part Number:

   297-4587

8. Piston (活塞): A component that reciprocates within the cylinder, converting combustion pressure into mechanical motion. Located inside the engine cylinders. Example:

   Caterpillar CAT C9 Engine

   uses

   Piston 385-1657

   . Part Number:

   385-1657

9. Push Rod (推杆): A rod that transmits motion from the camshaft to the rocker arms in an overhead valve engine. Located in the valve train system. Example:

   Caterpillar CAT C9 Engine

   uses

   Push Rod 264-6156

   . Part Number:

   264-6156

10. Tappet (挺杆/气门推杆): A component in the valve train that transmits motion from the camshaft to the pushrods or valves. Located between the camshaft and pushrods or valves. Example:

    Caterpillar CAT 3066 Engine

    uses

    Tappet 222-8183

    . Part Number:

    222-8183

11. Turbocharger (涡轮增压器): A forced induction device that increases engine power by compressing intake air. Mounted on the exhaust manifold and intake system. Example:

    Caterpillar CAT C13 Engine

    uses

    Turbo GTB4088L Turbocharger 397-6195

    . Part Number:

    397-6195

12. Valve Cover (气门室盖): A cover that seals the top of the cylinder head, protecting the valve train components. Located on top of the cylinder head. Example:

    Caterpillar CAT C9 Engine

    uses

    Valve Cover 263-7825

    . Part Number:

    263-7825