Multi-cylinder engine for vehicle
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsTetsuya Tosaka, Toshio Shimada, Tadashi Kato, Takashi Kanbe
Life of this patent
Estimating the term…
Abstract
To provide a multi-cylinder engine for a vehicle, in which a pair of cylinder bore rows, each including a plurality of cylinder bores disposed in parallel to each other, are disposed in such a manner as to be perpendicular to a crank shaft disposed substantially in the horizontal direction. Accordingly, a relatively large space can be ensured under a cylinder head. Cam shafts corresponding to cylinder bore rows are disposed over a pair of planes containing the axial lines of cylinder bores constituting the cylinder bore rows, respectively.
Claims7
A multi-cylinder engine for a vehicle, comprising:
- a crank shaft disposed in a substantially horizontal direction in the multi-cylinder engine;
- a pair of cylinder bore rows arranged perpendicular to the crank shaft, each of said pair of cylinder bore rows including a plurality of cylinder bores disposed in parallel with each other;
- cam shafts corresponding to said cylinder bore rows are spaced from and disposed above a pair of planes containing axial lines of said cylinder bores, respectively, wherein each one of said cam shafts operates intake valves and exhaust valves that are disposed substantially above a respective one of said pair of planes;
- and
- cams for directly opening/closing intake valves and exhaust valves disposed in cylinder heads of each of said cylinder bores are provided on said cam shafts, respectively,
- wherein said engine is mounted on said vehicle with said cylinder bore rows disposed in an approximately V-shape, and said crank shaft extends in a longitudinal direction of said vehicle.
A vehicle, comprising:
- a multi-cylinder engine mounted in said vehicle;
- a crank shaft disposed in a substantially horizontal direction in the multi-cylinder engine;
- a pair of cylinder bore rows arranged perpendicular to the crank shaft, each of said pair of cylinder bore rows including a plurality of cylinder bores disposed in parallel with each other;
- cam shafts corresponding to said cylinder bore rows are spaced from and disposed above a pair of planes containing axial lines of said cylinder bores, respectively, wherein each one of said cam shafts operates intake valves and exhaust valves that are disposed substantially above a respective one of said pair of planes;
- and
- cams for directly opening/closing intake valves and exhaust valves disposed in cylinder heads of each of said cylinder bores are provided on said cam shafts, respectively,
- wherein said engine is mounted on said vehicle with said cylinder bore rows disposed in an approximately V-shape, and the crank shaft of said engine extends in a longitudinal direction of said vehicle.
A vehicle, comprising:
- a multi-cylinder engine mounted in said vehicle;
- a crank shaft disposed in a substantially horizontal direction in the multi-cylinder engine;
- a pair of cylinder bore rows arranged perpendicular to the crank shaft, each of said pair of cylinder bore rows including a plurality of cylinder bores disposed in parallel with each other;
- cam shafts corresponding to said cylinder bore rows are spaced from and disposed above a pair of planes containing axial lines of said cylinder bores, respectively, wherein each one of said cam shafts operates intake valves and exhaust valves that are disposed substantially above a respective one of said pair of planes;
- and
- a transmission mechanism configured such that endless chains are wound around a drive sprockets fixed on one end portion of the crank shaft and sprockets fixed on one end portion of said cam shafts;
- wherein said engine is mounted on said vehicle with said cylinder bore rows disposed in an approximately V-shape, and the crank shaft of said engine extends in a longitudinal direction of said vehicle.
Dependencies are inferred from the claim text.