Patent ID: 7044253

Claim:
A exhaust system for a vehicle with a low floor, the system comprising: a power unit provided with a longitudinal V-type engine mounted at least partly below the low floor, the power unit comprising a transmission unit, a chain drive mechanism for driving a rear wheel, and the chain drive mechanism and the power unit, which includes the V-type engine and the transmission unit, being substantially U-shaped when the power unit is viewed from above, the U-shape defining an opening; and a first exhaust pipe connected to a rear cylinder in a bank of the V-type engine, the first exhaust pipe extending downward through the opening and then extending rearward with a rear end of the first exhaust pipe connecting to a second exhaust pipe at a collection member, the second exhaust pipe being connected to a front cylinder in the bank of the V-type engine, wherein the transmission unit is configured so that the transmission unit is connected to the engine on one side of the V-type engine, is extended backward on the one side of the vehicle, and drives the chain drive mechanism, so as to drive the rear wheel from the other side of the vehicle in the vicinity of a pivot of a swing arm for the rear wheel.