Patent ID: 7246592
Filing Date: 2007-07-24
Classification: F02B,F02M,Y02T

Abstract:
1. An intake manifold for an internal combustion engine including a first cylinder head and a second cylinder head each having at least one intake port, the first cylinder head and the second cylinder head defining a crank angle therebetween, the intake manifold comprising: a manifold body that defines a plurality of intake passages each connecting with each of the at least one intake port, each of the plurality of intake passages having an interior divided into a plurality of divisional passages; a butterfly valve that communicates and blocks at least one of the plurality of divisional passages; a plurality of tanks that is formed integrally with the manifold body for accumulating negative pressure generated in the manifold body, the plurality of tanks including a first tank and a second tank, which are provided respectively to the first cylinder head and the second cylinder head; and an actuator that is applied with negative pressure from the plurality of tanks for operating the butterfly valve, wherein the manifold body has a communication passage that communicates the first tank with the second tank.