Multicylinder internal combustion engine with two inlet valves and two outlet valves
AssigneeDeutz Aktiengesellschaft
InventorManfred Breitenberger
Life of this patent
Estimating the term…
Abstract
The invention relates to a multicylinder internal combustion engine with two inlet valves and two outlet valves (12, 11), the outlet valves (11) being located on one side of an internal combustion engine and the inlet valves (12) being located on the other side. The outlet valves (11) and the inlet valves (12) are actuated by a camshaft via inlet rocker arms (4) and outlet rocker arms (5). In order to reduce the size of the cylinder heads (1) and the rocker housing (2), the inlet rocker arm (4) and the outlet rocker arm (5) are forked. Each forked rocker arm (4,5) actuates two similar valves (12,11) per cylinder (13). The axes (4a, 5a) of the inlet rocker arms (4) or outlet rocker arms (5) are staggered in relation to each other or preferably overlap.
Claims12
An internal combustion engine having a bank of at least two cylinders and further comprising:
- a cylinder head (1) including
- two intake valves (12) for each cylinder, said intake valves (12) being disposed on one side of a longitudinal vertical plane (14) of said engine defined by the axes (13) of said cylinders and
- two exhaust valves (11) for each cylinder, said exhaust valves (11) being disposed on the other side of said longitudinal vertical plane (14),
- a rocker arm housing (2) mounted on top of said cylinder head (1) with the juncture of said rocker arm housing (2) and said cylinder head (1) defining a parting plane (24),
- a forked intake rocker arm (4) for each cylinder operatively engaging said intake valves (12) of the associated cylinder,
- separate bearing journals (6) supporting said intake rocker arms (4) on said rocker arm housing (1) for pivoting about an intake rocker arm pivot axis (4a),
- a forked exhaust rocker arm (5) for each cylinder operatively engaging said exhaust valves of the associated cylinder and
- a continuous exhaust rocker arm support shaft (8) supporting all of said exhaust rocker arms (5) on said rocker arm housing (2) for pivoting about an exhaust rocker arm pivot axis (82)
- said exhaust rocker arm support shaft (8) being offset in a vertical direction from said bearing journals (6) supporting said intake rocker arms (4).
Dependencies are inferred from the claim text.