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US 12,397,870 B2Granted
Straddle-type vehicle
AssigneeZhejiang CFMOTO Power Co., Ltd.
InventorsQianjin Li, Zhiyong Chen, An He, Ying Fang
Life of this patent
Estimating the term…
Abstract
A straddle-type vehicle (100) includes a frame (20) and an engine (10) mounted on the frame (20), the engine (10) includes a cylinder head (11) positioned toward the rear end of the frame, and located below a saddle seat (80). The cylinder head faces toward the rear end of the frame, which allows the heated cylinder head of the engine and the exhaust pipe connected to the cylinder head to avoid contact with the vehicle the user's legs while riding the vehicle, so the effect of heat emitted from the cylinder head on the rider's experience is reduced.
Claims26
A straddle-type vehicle comprising:
- a frame defining a front end and a rear end;
- wheels including front and rear wheels supporting the frame;
- an engine mounted on the frame for providing power to the vehicle, which comprises a main body and a cylinder head connected to the main body and positioned above the main body, the cylinder head having an exhaust channel for discharging exhaust gas;
- an intake and exhaust system, comprising an intake assembly for supplying air to the engine and an exhaust assembly for discharging exhaust gas generated by the engine, the exhaust assembly having an exhaust pipe connected to the cylinder head and a muffler connected to the exhaust pipe;
- a brake system associated with the wheels;
- a transmission system on the frame for transmitting power from the engine to the wheels;
- a fuel system for providing fuel to the engine, wherein the fuel system comprises a fuel tank located forwardly of the engine;
- and
- a saddle seat supported on the frame and located above the engine;
- wherein the engine is oriented with its cylinder head positioned toward the rear end of the frame, and the opening direction of the exhaust channel faces toward the muffler;
- wherein a center point of the fuel tank is located at an elevation lower than a highest point of the cylinder head;
- and
- wherein the muffler defines:
- a resonance cavity;
- an exhaust cavity;
- and
- an air intake cavity located between the resonance cavity and the exhaust cavity;
- wherein the exhaust pipe is connected to the air intake cavity such that exhaust gas enters into the resonance cavity through the air intake cavity, and then flows into the exhaust cavity.
15 more elements
A straddle-type vehicle comprising:
- a frame defining a front end and a rear end;
- wheels including front and rear wheels supporting the frame;
- an engine mounted on the frame for providing power to the vehicle which comprises a main body and a cylinder head connected to the main body and positioned above the main body, the cylinder head having an exhaust channel for discharging exhaust gas;
- an intake and exhaust system, comprising an intake assembly for supplying air to the engine and an exhaust assembly for discharging exhaust gas generated by the engine, the exhaust assembly having an exhaust pipe connected to the cylinder head and a muffler connected to the exhaust pipe;
- a brake system associated with the wheels;
- a transmission system on the frame for transmitting power from the engine to the wheels;
- a fuel system for providing fuel to the engine, wherein the fuel system comprises a fuel tank located forwardly of the engine;
- and
- a saddle seat supported on the frame and located above the engine;
- wherein the engine is oriented with its cylinder head positioned toward the rear end of the frame, and the opening direction of the exhaust channel faces toward the muffler;
- wherein a center point of the fuel tank is located at an elevation lower than a highest point of the cylinder head;
- and
- wherein the straddle-type vehicle further comprises a battery, with the main body positioned between a transmission of the transmission system and the battery.
10 more elements
A straddle-type vehicle comprising:
- a frame defining a front end and a rear end;
- wheels including front and rear wheels supporting the frame;
- an engine mounted on the frame for providing power to the vehicle, which comprises a main body and a cylinder head connected to the main body and positioned above the main body, the cylinder head having an exhaust channel for discharging exhaust gas;
- an intake and exhaust system, comprising an intake assembly for supplying air to the engine and an exhaust assembly for discharging exhaust gas generated by the engine, the exhaust assembly having an exhaust pipe connected to the cylinder head and a muffler connected to the exhaust pipe;
- a brake system associated with the wheels;
- a transmission system on the frame for transmitting power from the engine to the wheels;
- a fuel system for providing fuel to the engine, wherein the fuel system comprises a fuel tank located forwardly of the engine;
- and
- a saddle seat supported on the frame and located above the engine;
- wherein the engine is oriented with its cylinder head positioned toward the rear end of the frame. and the opening direction of the exhaust channel faces toward the muffler;
- wherein a center point of the fuel tank is located at an elevation lower than a highest point of the cylinder head;
- and
- wherein a bottom of the main body is provided with an inclined shock absorber for supporting the engine, wherein a bottom plate with at least one flat surface supports the engine from a lower portion of the frame, and wherein a cross-section of the bottom plate has an inverted v-shape.
10 more elements
A straddle-type vehicle comprising:
- a frame defining a front end and a rear end;
- wheels including front and rear wheels supporting the frame;
- an engine mounted on the frame for providing power to the vehicle, which comprises a main body and a cylinder head connected to the main body and positioned above the main body, the cylinder head having an exhaust channel for discharging exhaust gas;
- an intake and exhaust system, comprising an intake assembly for supplying air to the engine and an exhaust assembly for discharging exhaust gas generated by the engine, the exhaust assembly having an exhaust pipe connected to the cylinder head and a muffler connected to the exhaust pipe;
- a brake system associated with the wheels;
- a transmission system on the frame for transmitting power from the engine to the wheels;
- a fuel system for providing fuel to the engine;
- and
- a saddle seat supported on the frame and located above the engine;
- wherein the engine is oriented with its cylinder head positioned toward the rear end of the frame. and the opening direction of the exhaust channel faces toward the muffler;
- wherein a center point of the fuel tank is located at an elevation lower than a highest point of the cylinder head;
- and
- wherein the muffler defines;
- a resonance cavity;
- an exhaust cavity;
- and
- an air intake cavity between the resonance cavity and the exhaust cavity;
- wherein the exhaust pipe is connected to the air intake cavity;
- and
- wherein exhaust gas enters into the resonance cavity through the air intake cavity, and then flows into the exhaust cavity.
17 more elements
A straddle-type vehicle comprising:
- a frame defining a front end and a rear end;
- wheels including front and rear wheels supporting the frame;
- an engine mounted on the frame for providing power to the vehicle, which comprises a main body and a cylinder head connected to the main body and positioned above the main body, the cylinder head having an exhaust channel for discharging exhaust gas;
- an intake and exhaust system, comprising an intake assembly for supplying air to the engine and an exhaust assembly for discharging exhaust gas generated by the engine, the exhaust assembly having an exhaust pipe connected to the cylinder head and a muffler connected to the exhaust pipe;
- a brake system associated with the wheels;
- a transmission system on the frame for transmitting power from the engine to the wheels;
- a fuel system for providing fuel to the engine;
- and a saddle seat supported on the frame and located above the engine;
- wherein the engine is oriented with its cylinder head positioned toward the rear end of the frame, and the opening direction of the exhaust channel faces toward the muffler;
- wherein a center point of the fuel tank is located at an elevation lower than a highest point of the cylinder head;
- and
- wherein the transmission system comprises a transmission and wherein the straddle-type vehicle further comprises a battery mounted from the frame on a side of the main body opposite from the transmission.
9 more elements
Dependencies are inferred from the claim text.