A crossflow cylinder head is a cylinder head that features the intake and exhaust ports on opposite sides. The gases can be thought to flow across the head. This is in contrast to cylinder head designs that have the ports on the same side. The cylinder head from a GMC van. ... In automotive engineering, an intake manifold or inlet manifold is a part of an engine that supplies the fuel/air mixture to the cylinders. ... In automotive engineering, an intake manifold or inlet manifold is a part of an engine that supplies the fuel/air mixture to the cylinders. ...
A crossflow head gives better performance, but the popular explanation put forward for this — that the gases don't have to change direction and hence are moved into and out of the cylinder more efficiently — is largely erroneous since there is no continuous flow because of opening and closing of the valves. The main reason for a crossflow's performance is that the ports and valves can be larger and its physical separation of the hot exhaust manifold keeps the air in the intake manifold cooler. Most modern engines are of a crossflow design. Engine tuning is the adjustment, modification or design of internal combustion engines to yield more performance, either in terms of power output or economy. ... poppet valve A poppet valve is the type of valve system used in most piston engines, used to seal the intake and exhaust ports. ...
"Crossflow" is often used to refer specifically to Ford's Kent Crossflow 4-cylinder OHV engine. This unit has been used in cars from the 1960s up to the present day, albeit with the addition of fuel injection and modern engine management. Ford may mean a number of things: A ford is a river crossing. ... In automotive engineering, an overhead valve internal combustion engine is one in which the entry and exit valves and ports are contained in the cylinder head. ... Fuel Injection is a method to meter fuel into an internal combustion engine. ...
Internally the cylinderhead has passages for the fuel/air mixture to travel to the inlet valves from the intake manifold, for exhaust gases to travel from the exhaustvalves to the exhaust manifold, and for antifreeze (coolant) to cool the head and engine.
A V engine usually has two cylinderheads, one at each end of the V, although Volkswagen, for instance, has recently produced a V6 where the angle between the cylinder banks is so narrow that it utilizes a single head.
The cylinderhead is key to the performance of the internal combustion engine, as the shape of the combustion chamber, inlet passages and ports (and to a lesser extent the exhaust) determines a major portion of the volumetric efficiency and compression ratio of the engine.
A crossflowcylinderhead is a cylinderhead that features the intake and exhaust ports on opposite sides.
This is in contrast to reverse-flow cylinderhead designs that have the ports on the same side.
A crossflowhead gives better performance, but the popular explanation put forward for this — that the gases don't have to change direction and hence are moved into and out of the cylinder more efficiently — is largely erroneous since there is no continuous flow because of opening and closing of the valves.
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