ARRANGEMENT OF CYLINDERS
also classified according to the arrangement of the cylinders (fig. 2-10):
in-line with all cylinders cast in a straight line above the crankshaft; v-type
with two banks of cylinders mounted in a V-shape above the crankshaft; horizontal
opposed with cylinders arranged 180 degrees from other with opposing cylinders
sharing a common crankshaft journal; and radial with the cylinders placed in
a circle around the crankshaft.
is a common arrangement for both automotive and truck applications. It is commonly built
in four- and six-cylinder configurations.
is also a common arrangement for both automotive and truck applications. The V-type engine
in a six-cylinder configuration is suitable for front-wheel drive cars where the engine is
OPPOSEDThis engine is designed to fit into compartments where
height is a consideration. It is used for air-cooled configurations.
engine is designed almost exclusively for an aircraft engine.
are numbered. The cylinder nearest the front of an in-line engine is number 1. The others
are numbered 2, 3, 4, and so on, from front to rear. In V-type engines, the numbering
sequence varies by manufacturer. You should always consult the manufacturer's manual for
the correct order.
order (which is different from the numbering order) of the
cylinders of most engines is stamped on the cylinder block or on the manufacturers
nameplate. If you are unable to locate the firing order and no operation or instruction
manual is available, turn the engine over by the crankshaft and watch the order in which
the intake valves open.