Patent ID: 7263962

Claim:
An intake system of an engine, having the engine and a transmission arranged side-by-side in a widthwise direction of a vehicle, an intake manifold attached rearward of the engine, the intake manifold having a top surface formed lower than a top surface of the engine, an air cleaner positioned above the intake manifold with an element positioned between upstream-side and downstream-side casings, and a lower half body that defines a space and that is joined to a lower surface of an engine cover covering upper parts of the engine and the intake manifold so as to form the upstream side casing, an intake duct for introducing the outside air to the upstream-side casing, and a resonance chamber casing joined to the upstream-side casing through a communication pipe, comprising: a rear wall section extending downwardly formed in the lower half body that is joined to a rear end of the engine cover; a mounting frame section formed in the rear wall section for attaching the element; the upstream-side casing formed forward of the rear wall section; the intake duct having a downstream end connected to a front surface of the upstream-side casing adjacent to the transmission; the intake duct extending widthwise of the vehicle and having an upstream end opened to a side edge of the engine cover adjacent to the transmission; the resonance chamber casing joined to a side departing from the transmission through the communication pipe forward of the upstream-side casing; and the resonance chamber casing formed to extend along the full width of the engine cover so as to cover the front of the intake duct.