Exhaust pipe structure of vehicle with low floor
First Claim
1. 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, andthe 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.
1 Assignment
0 Petitions
Accused Products
Abstract
A low floor vehicle is a scooter-type motorcycle in which a power unit with a longitudinal V-type engine is mounted below a low floor. The power unit is substantially U-shaped when the power unit is viewed from the top by configuring the transmission unit of the power unit so that the transmission unit is connected to the engine on one side of the V-type engine, is extended backward on one side of the vehicle and drives a chain drive mechanism so as to drive a rear wheel from the other side of the vehicle in the vicinity of a pivot of a swing arm for the rear wheel. A first exhaust pipe connected to a rear cylinder in a bank of the V-type engine is extended backward from the cylinder, the rear end is extended downward via space which is an opening substantially U-shaped when the opening is viewed from the top, the lower end is extended backward and the rear end is connected to a second exhaust pipe connected to a front cylinder in the bank of the V-type engine.
22 Citations
14 Claims
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1. A exhaust system for a vehicle with a low floor, the system comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. A motorcycle with a low floor, the motorcycle comprising:
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a longitudinal V-type engine, at least a part of the engine being mounted below the low floor; a first exhaust pipe connected to the a rear cylinder of the engine; a second exhaust pipe connected a front cylinder of the engine; a collecting pipe configured to collect the first and second exhaust pipes; a transmission unit, the transmission unit extending rearward on one side of the motorcycle and driving the motorcycle from the other side of the vehicle; and a chain drive mechanism for driving a rear wheel, the chain drive mechanism being driven by the transmission unit so as to drive the rear wheel, wherein the transmission unit, the engine and the chain drive mechanism form a U-shape when viewed from above, the U-shape defines an opening, and the first exhaust pipe extends downward through the opening and then extends rearward to the collecting pipe. - View Dependent Claims (7, 8, 9)
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10. An exhaust system for a vehicle with a low floor, the system comprising:
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a longitudinal V-type engine, at least a part of the engine being mounted below the low floor; a first exhaust means for connection to a rear cylinder of the engine and for exhausting gases from the rear cylinder; a second exhaust means for connection to a front cylinder of the engine and for exhausting gases from the front cylinder; a collecting means for collecting the first and second exhaust means; a transmission means extending rearward on one side of the motorcycle and for driving the motorcycle from the other side of the vehicle; and a chain drive mechanism for driving a rear wheel, the chain drive mechanism being driven by the transmission means so as to drive the rear wheel, wherein the transmission means and the engine form a U-shape when viewed from above, the U-shape defines an opening, and the first exhaust means extends downward through the opening and then extends rearward to the collecting means. - View Dependent Claims (11, 12, 13, 14)
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Specification