Structure for mounting the same type of camshafts on different t

Details Structure for mounting the same type of camshafts on different t Structure for mounting the same type of camshafts on different t

1990-05-21

1991-09-24

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Overhead camshaft

123DIG1, 123193H, 384434, F01L 104

Patent

active

050505440

ABSTRACT:
A structure for mounting the same type of camshafts on two different types of cylinder heads which have reversed order of intake valve/exhaust valve arrangement, the same type of camshafts being mounted on the two types of cylinder heads so as to be staggered longitudinally by an amount delta. In the structure, thrust planes formed in the two types of cylinder heads also are staggered with respect to each other by the amount delta. Further, a single type of thrust bearing cap is provided which has a bolt hole spaced longitudinally from the transverse centerline of the bearing cap by one-half the amount delta. The bearing cap mounted to one type of cylinder head is in reversed orientation relative to the bearing cap mounted to the other type of cylinder head. This structure enables common use of the same camshaft manufacturing line and the same engine assembly line for the two types of cylinder heads.

REFERENCES:
patent: 1556859 (1925-10-01), L'Orange
patent: 2179709 (1939-11-01), Brecht
patent: 2853063 (1958-09-01), Leach
patent: 4121558 (1978-10-01), Sakakibara et al.
patent: 4135478 (1979-01-01), Rassey
patent: 4199202 (1980-04-01), Maeda
patent: 4610224 (1986-09-01), Fujita
patent: 4729348 (1988-03-01), Okada et al.
patent: 4915066 (1990-04-01), Koshimoto et al.

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