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Toyota A engine

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The Toyota A Series engines are a family of inline-fourinternal combustion engines with displacement from 1.3 L to 1.8 L produced by Toyota Motor Corporation. The series has cast ironengine blocks and aluminum cylinder heads. To make the engine as short as possible, the cylinders are siamesed. The development of the series began in the late 1970s, when Toyota wanted to develop a completely new engine for the Toyota Tercel, the successor of Toyota's K engine.

Toyota TercelToyota TercelThe Toyota Tercel (Japanese: トヨタ・ターセル, Hepburn: Toyota Tāseru) is a subcompact car manufactured by Toyota from 1978 until 1999 across five generations, in five body configurations sized between the Corolla and the Starlet.Toyota K engineToyota K engineThe Toyota K series is an inline-four engine that was produced from 1966 through 2007. It is a two-valve pushrod engine design. It was originally built from the Toyota Kamigo plant in Toyota City factory in Japan. All K series are non-crossflow engines – the inlet and exhaust manifolds are on the same side. They have cast iron blocks and aluminium alloy heads, with a crankshaft supported by five main bearings.Internal combustion engineInternal combustion engineEngine in which fuel combusts with an oxidizerDiagram of a cylinder as found in an overhead cam 4 stroke gasoline engine: C – crankshaftE – exhaust camshaftI – inlet camshaftP – pistonR – connecting rodS – spark plugV – valves.Siamesed cylindersSiamesed cylindersSiamesed cylinders are engine cylinders arranged in such a way that they have no channels between them to allow water or other coolant to circulate. Cylinders are generally arranged in this manner when the engine block is of limited size or when stability of the cylinder bores is of concern, such as in racing engines. The advantage is that the engine block will be reduced in size, or the bore can be increased in size.Engine blockEngine blockIn an internal combustion engine, the engine block is the structure that contains the cylinders and other components. The engine block in an early automotive engine consisted of just the cylinder block, to which a separate crankcase was attached. Modern engine blocks typically have the crankcase integrated with the cylinder block as a single component. Engine blocks often also include elements such as coolant passages and oil galleries.Engine displacementEngine displacementEngine displacement is the measure of the cylinder volume swept by all of the pistons of a piston engine, excluding the combustion chambers. It is commonly used as an expression of an engine's size, and by extension as an indicator of the power (through mean effective pressure and rotational speed) an engine might be capable of producing and the amount of fuel it should be expected to consume.Fuel efficiencyFuel efficiencyFuel efficiency (or fuel economy) is a form of thermal efficiency, meaning the ratio of effort to result of a process that converts chemicalpotential energy contained in a carrier (fuel) into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per application, and this spectrum of variance is often illustrated as a continuous energy profile.Cast ironCast ironCast iron is a class of iron–carbonalloys with a carbon content of more than 2% and silicon content around 1–3%. Its usefulness derives from its relatively low melting temperature.Overhead camshaft engineOverhead camshaft engineAn overhead camshaft (OHC) engine is a piston engine in which the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion chamber in the engine block. Single overhead camshaft (SOHC) engines have one camshaft per bank of cylinders. Dual overhead camshaft (DOHC, also known as "twin-cam") engines have two camshafts per bank.ToyotaToyotaToyota Motor Corporation (Japanese: トヨタ自動車株式会社, Hepburn: Toyota Jidōsha kabushiki gaisha; IPA: [toꜜjota], English: , commonly known as simply Toyota) is a Japanese multinational automotive manufacturer headquartered in Toyota City, Aichi, Japan. It was founded by Kiichiro Toyoda and incorporated on August 28, 1937. Toyota is the largest automobile manufacturer in the world, producing about 10 million vehicles per year.Straight-four engineStraight-four engineAn inline-four engine (also referred to as a straight-four engine) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. Most automotive four-cylinder engines use an inline-four layout, and the term "four-cylinder engine" is often used synonymously with inline-four engines.Cylinder headCylinder headIn a piston engine, the cylinder head sits above the cylinders, forming the roof of the combustion chamber. In sidevalve engines the head is a simple plate of metal containing the spark plugs and possibly heat dissipation fins. In more modern overhead valve and overhead camshaft engines, the head is a more complicated metal block that also contains the inlet and exhaust passages, and often coolant passages, valvetrain components, and fuel injectors.

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