| US 7,610,903 B2 | ||
| Multicylinder internal combustion engine | ||
| Hayato Maehara, Saitama (Japan); Shinji Saito, Saitama (Japan); Satoru Nojima, Saitama (Japan); Takaaki Tsukui, Saitama (Japan); and Takeru Abe, Saitama (Japan) | ||
| Assigned to Honda Motor Co., Ltd., Tokyo (Japan) | ||
| Filed on Sep. 19, 2007, as Appl. No. 11/902,192. | ||
| Claims priority of application No. 2006-256004 (JP), filed on Sep. 21, 2006. | ||
| Prior Publication US 2008/0072869 A1, Mar. 27, 2008 | ||
| Int. Cl. F02D 7/00 (2006.01); F02D 7/02 (2006.01) | ||
| U.S. Cl. 123—481 [123/198 F] | 23 Claims |
| 1. A multicylinder internal combustion engine comprising:
a cylinder head with engine valves arranged therein;
valve actuators for openably operating said engine valves, respectively;
a cylinder head cover forming, in combination with said cylinder head, a valve actuator chamber with said valve actuators
accommodated therein, at least some of said valve actuators being deactivatable to disable their corresponding cylinders;
and
a crankshaft,
wherein said multicylinder internal combustion engine is a V-shaped internal combustion engine provided with a front bank
and rear bank, and the cylinders on opposite ends of the crankshaft are set as full-time operating cylinders, being located
in the front bank, and the cylinders in the vicinity of a center of the crankshaft are set as deactivatable cylinders, being
located in the rear bank;
wherein each of the full-time operating cylinders are connected to a position on the crankshaft further toward the end of
the crankshaft than each of the deactivatable cylinders is connected.
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