Rear-engine design In automobile design, a rear-engine design layout places the engine at the rear of the vehicle. The center of gravity of the engine itself is past the rear ...

Engine Roller rocker explained A roller rocker is a rocker assembly that uses bearings instead of metal sliding on metal. A cam/rocker assembly uses a normal cam, but the ...

Rotary engine History Use in cars History Although rotary engines were mostly used in aircraft, a few cars and motorcycles were built with rotary engines. Perhaps the first was ...

How to Replace a Serpentine Drive Belt A serpentine belt drives the accessories like the air conditioner compressor,power steering pump and alternator. Over time these belts will ...

Starter ring gear A starter ring gear, sometimes called a starter ring or ring gear, is a medium carbon steel ring with teeth that is fitted on the periphery of a flexplate or ...

Inline Straight 12 engine A straight-12 engine or inline-12 engine is a twelve-cylinder internal combustion engine with all twelve cylinders mounted in a straight line along the ...

Inline Straight twin engine A straight-twin engine, also known as as straight-two, inline-twin, vertical-twin, or parallel-twin is a two-cylinder piston engine which has its ...

Tappet Internal combustion engines The term tappet is widely used in relation to internal combustion engines, but imprecisely. It is most commonly encountered as a maintenance ...

Camshaft Timing belt A timing belt or timing chain is a part of an internal combustion engine that synchronizes the rotation of the crankshaft and the camshaft(s) so that the ...

Timing Roller Chain Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and ...

Transverse engine A transverse engine is an engine mounted in a vehicle so that the engine's crankshaft axis is perpendicular to the long axis of the vehicle. Many modern front ...

Two-stroke engine Saab Two-stroke 3 cylinder engine A two-stroke, two-cycle, or two-cycle engine is a type of internal combustion engine which completes a power cycle in only one ...

V4 engine A V4 engine is a V form engine with four cylinders and three main bearings. Automobile use The V4 engine has not been widely used in cars, with Lancia, Ford and ZAZ the ...

V8 engine A V8 engine is a V engine with eight cylinders mounted on the crankcase in two banks of four cylinders, in most cases set at a right angle to each other but sometimes ...

Engine Multi-valve History In automotive engineering a multi-valve or multivalve engine is one where each cylinder has more than two valves. A multi-valve engine has better ...

Engine Valve timing In a piston engine, the valve timing is the precise timing of the opening and closing of the valves. In four-stroke cycle engines and some two-stroke cycle ...

Variable valve lift Variable valve lift is a technology which is increasingly used in automotive piston engines. It varies the height that a valve opens, in order to improve ...

Engine Variable valve timing In internal combustion engines, Variable valve timing (VVT), also known as Variable valve actuation (VVA), is any mechanism or method that can alter ...