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In an internal combustion engine, a head gasket provides the seal between the engine block and cylinder head(s). Its purpose is to seal the combustion gases within the cylinders and to avoid coolant or engine oil leaking into the cylinders. [1] Leaks in the head gasket can cause poor engine running and/or overheating.
At the Geneva Auto Show 2011, Saab unveiled their last concept vehicle: the Saab PhoeniX was fitted with the 1.6-litre, turbocharged BMW Prince engine with 147 kW (200 PS). [6] [7] On 25 June 2014 1.6-litre turbo Prince engine won its eighth consecutive International Engine of the Year Award in the 1.4 to 1.8-litre category. In 2014 the Prince ...
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.
A crossflow T-head sidevalve engine The usual L-head arrangement Pop-up pistons may be used to increase compression ratio Flathead with Ricardo's turbulent head. A flathead engine, also known as a sidevalve engine [1] [2] or valve-in-block engine, is an internal combustion engine with its poppet valves contained within the engine block, instead of in the cylinder head, as in an overhead valve ...
The Prince G-1 was the improved GA-4, and was rated at 1.5 L, but displaced 1.5 L; 90.6 cu in (1,484 cc) thanks to an entirely different 75 by 84 mm (2.95 by 3.31 in) bore and stroke. This undersquare arrangement was similar to the designs Nissan licensed from Austin Motor Company , though this is probably coincidental.
An unusual form of four-stroke model engine that uses what is essentially a sleeve-valve format, is the British RCV series of "SP" model engines, which use a rotating cylinder liner driven through a bevel gear at the cylinder liner's "bottom", which is actually at the aft end of the cylinder; and, even more unusually, have the propeller shaft ...
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This happens because the 2 cylinders which share the port are not equally spaced in terms of firing order. For example, the Leyland Mini with its 1-3-4-2 firing order has the 1 and 2 inlets siamesed and the 3 and 4 inlets siamesed. First the number 3 sucks the mixture out of the port, then there is less left for number 4.