Engine structure

A piston is a part that, together with a cylinder and a cylinder head,...

A crankshaft is a main engine part that is a cylinder-related main mov...

A cylinder is a component that forms a combustion chamber together wit...

A connecting rod, also referred to as a con rod, is a component that c...

A flywheel is one type of balance wheel attached to the crankshaft. S...

An air-fuel mixture is air mixed with fuel gas or atomized liquid fuel...

An intake valve is a valve on the side where air-fuel mixtures and air...

An exhaust valve is a valve on the side where exhaust gas is discharge...

An ignition spark is a spark created during ignition in a gasoline eng...

A fuel injection nozzle is an injection nozzle.

An intake valve is an inlet valve.

A nozzle is an injection nozzle in an engine.

Noise tends to increase when the number of mechanical components incre...

A valve mechanism, also referred to as valve train, is one of the main...

A valve is one engine mechanism used in four-stroke engines. A valve ...

A piston ring is a component that fits into a piston ring groove. Its ...

Single-cylinder is the presence of one cylinder.

Air-cooled is a method that cools engine main units through contact wi...

See "Injection pump."

A cylinder head is a component attached to the cylinder block through ...

Startability is whether or not an engine easy to start. Good or bad s...

A spark plug is a mechanism that adds a spark sent to an electrode gap...

A spark plug, also referred to as an ignition plug, is a component tha...

Camshafts are one of the basic components of an engine. Camshafts have...

The main driving system is one of the main parts of an engine. The ma...

The valve mechanism, also referred to as valve train, is one of the ma...

A cylinder block (crankcase) is one of the main parts of an engine tha...

See "Connecting rod."

Intake and exhaust valves are components included in the valve mechani...

A tappet is a component included in the valve mechanism, which is a ma...

A pushrod is one component of the valve mechanism. Pushrods are compo...

The rocker arm is one component of the valve mechanism. The center is...

A head gasket is a gasket inserted between the cylinder head and the c...

The cooling method is the method used to cool the cooling system. Alt...

The lubrication method is the method used to lubricate the lubrication...

Inline type (straight type) is one type of cylinder arrangement. Cyli...

V-type is one type of cylinder arrangement. Cylinders are arranged in...

Horizontally opposed is one type of cylinder arrangement. Cylinders a...

Inline/slanted is one type of cylinder arrangement. Cylinders are arr...

See "Cylinder."

A cylinder liner is a cylindrical component that fits into the cylinde...

See "Cylinder liner."

See "Cylinder liner."

See "Cylinder liner."

A water jacket is a hole inside an engine for coolant to pass through.

See "Overhead-valve (OHV)."

An injection nozzle is a component made up of a nozzle-piece and a noz...

A preheating device used in a diesel engine to compensate for the diff...

The piston head is the head section of the piston.

The skirt is the lower part of the piston.

A piston pin is a component that connects the piston and the connectin...

A piston pin boss is a location for attaching the piston pin on the pi...

A valve recess is a recess in the piston head. Since diesel engines h...

A ring groove is a location on the piston into which the piston ring f...

A compression ring is one component that fits into the ring groove on ...

An oil ring is one component that fits into the ring groove on a pisto...

The top ring is the compression ring that is attached first from the t...

The second ring is the compression ring that is attached second from t...

The third ring is the compression ring that is attached third from the...

Barrel-faced is one of the compression ring types that makes full cont...

Oil loss through piston is excess oil rising on the cylinder wall when...

Compression pressure is the pressure generated during the "compression...

Keystone is one of the compression ring types that is durable under he...

Ring stick is a phenomenon in which the ring sticks to the ring groove...

Taper-faced is one of the compression ring types where, since the oute...

Napier is one of the compression ring types that is even more effectiv...

An oil spoon is a part attached to the connecting rod cap that allows ...

The crank journal is the shaft part of the crank shaft that supports t...

The crank pin is the shaft part of the crank shaft for connecting the ...

The crank arm is the arm part of the crankshaft that connects the cran...

A balance weight is a weight on the crankshaft that balances weight an...

The splash lubricating system is a lubrication method that drops an oi...

Oil clearance is a gap for oil distribution that prevents the metal on...

The lubrication system distributes and circulates engine oil to all ar...

A force-feed system is a type of lubrication system that uses pressure...

A combination splash force-feed system, also referred to as combinatio...

The oil pump is driven by a component such as the camshaft or cranksha...

An oil strainer is a type of filter made from fine wire mesh. Some typ...

An oil filter is a component which removes impurities found inside eng...

A relief valve is a component that controls the maximum oil pressure i...

An oil pressure switch is a component that operates to illuminate a wa...

Cartridge oil filters integrate an element and case and are installed ...

The oil cooler minimizes oil temperature increases while the engine is...

The cooling system cools high-temperature parts such as the cylinder h...

Hopper-cooled cooling systems are one type of water-cooled cooling sys...

Condenser cooling systems are one type of water-cooled cooling system....

The water pump pumps coolant to the crankcase water jacket by rotating...

A thermostat is a component of forced-circulation cooling systems that...

A radiator cap is a part that works to ensure that the internal pressu...

A reserve tank is a tank that is connected to the radiator cap via an ...

The intake system consists of an air cleaner that removes dust from ai...

An air cleaner is one component of the intake system. The air cleaner...

An intake manifold is one component of the intake system. The intake ...

The exhaust system takes combustion gases generated during the combust...

An exhaust manifold is one component of the exhaust system. It collect...

A muffler is one component of the exhaust system and is used to reduce...

A turbocharger is a supercharger that uses energy provided by engine e...

An intercooler is a heat exchanger that cools the air fed by the turbo...

A supercharger is the same as a turbocharger. See "Turbocharger."

Boost compensators are used in turbocharged engines to compensate the ...

The exhaust process is one process of the internal EGR system during w...

The exhaust gas recirculation (EGR) system is a technology used to red...

The exhaust gas recirculation system is the same as the EGR system. Se...

Internal EGR is a type of exhaust gas recirculation in which a two-sta...

The intake process is one process of the internal EGR system which tak...

The EGR process is one process of the internal EGR system during which...

A reed valve is one component that makes up the mechanical external EG...

EGR gas is the exhaust gas returned to the intake side by the exhaust ...

See "Exhaust manifold."

See "Exhaust manifold."

The fuel system is an important component of gasoline engines that is ...

The fuel filter is used to filter fuel. The fuel filter is equipped wi...

See "Fuel filter."

High pressure fuel is fuel that has been pressurized by the injection ...

See "Injection pump."

See "Injection nozzle."

A feed pump is a mechanism in diesel engine fuel systems that feeds fu...

The injection pump controls the amount, timing, delivery rate, and dis...

Inline injection pumps are one type of injection pump in which a numbe...

The delivery valve is one component of the injection pump. The delive...

The fuel feed pump is the same as the feed pump. See "Feed pump."

Unlike inline injection pumps which pump fuel to each cylinder, distri...

See "Injection nozzle."

See "Injection nozzle."

In the case gasoline engines, EFI (Electronic Fuel Injection) systems ...

The injection timing is the moment at which fuel is injected in a dies...

The governor automatically adjusts the fuel supply in response to load...

The mechanical governor controls the fuel injection quantity depending...

See "Mechanical governor."

See "Mechanical governor."

See "Mechanical governor."

See "Mechanical governor."

See "Mechanical governor."

For the speed control lever, see "Mechanical governor."

The electronic governor electronically controls the operation of the i...

See "Electronic governor."

The starter rotates the crankshaft to start a stopped engine and gener...

See "Starter."

Pull-start starters are one type of manual starter and are started by ...

Lever type starters are one type of manual starter and are started by ...

Automatic decompressors are sometimes equipped to pull-start starters....

See "Lever type."

See "Lever type."

Regulators are installed when using a generator with a large power gen...

Because magnetos are by definition magnetic AC generators, they are co...

The AC dynamo is one component of the power generation system. Simila...

An alternator is an electrical component used to charge the battery. V...

See "Cooling system."