TH63597B - Dealing with gas flows in motorcycles - Google Patents

Abstract

DC60 (01/08/46) This description refers to a motorcycle with an intake path for air entering a single-cylinder or single-cylinder group engine through an opening located at the front of the motorcycle. Ideally, this path is straight, leading from the opening into the air intake box. The engine has one throttle body per cylinder, with one or more throttle bodies mounted on a surface, ideally facing forward of the engine. Furthermore, it describes a motorcycle with a single-cylinder or single-cylinder group engine featuring a single exhaust header per cylinder, mounted on a surface, ideally facing rear of the engine. One or more of these headers feed air to the first stage of the exhaust pipe, a continuation from the engine to the muffler, positioned along the length of the motorcycle's chassis, adjacent to the seat post. This description specifically refers to a motorcycle with an intake path for air entering a single-cylinder or single-cylinder group engine through an opening at the front of the motorcycle; ideally, this path is straight. From that opening, air enters the air intake box. Such an engine will have one throttle body per cylinder, with one or more of these throttle bodies mounted on a surface, ideally, facing forward of the engine. Furthermore, it has been revealed that motorcycles with single-cylinder or single-cylinder group engines have one exhaust header per cylinder, mounted on a surface, ideally, facing rear of the engine. One or more of these headers feed air to the first stage of the exhaust pipe, which is a continuation from the engine to the muffler and is positioned aligned with the seat post of the motorcycle along its entire length on the chassis.

Claims (23)

1. A motorcycle has an intake path for bringing air into the engine through an opening located at the front of the motorcycle. Ideally, this path should be a straight line. From this opening, air enters the air intake box, which has an opening for the engine's intake manifold. This intake manifold is mounted on a surface, ideally facing forward towards the engine. 2. Motorcycles under claim 1 that have only one cylinder or only one group of cylinders. 3. The motorcycle under claim 1, where the longitudinal axis of the cylinder, or each cylinder, is tilted toward the rear of the motorcycle. 4. The motorcycle under claim 3, where the axis is tilted rearward at an angle between 10E and 25E, which in the desired configuration would be an angle between 13E and 15E. 5. Motorcycles under any of the preceding claims where the ID route includes an inbound section adjacent to the origin side of the route. 6. A motorcycle as per any of the preceding claims, which consists of more than one cylinder and a separate intake manifold for each cylinder of the engine. 7. A motorcycle under any of the preceding claims where the ID route includes an extended portion. 8. The motorcycle under claim 7, where the spreading portion spreads out to an equal cone angle between 5E and 10E, which in the desired form should spread out to an angle of 7E. 9. A motorcycle as per any of the preceding claims, whereby the ID route passes through the motorcycle's center platform. 10. Motorcycles under claim 9, in the event that claims 6 through 8 are met, where the said center mount becomes part of the extended portion of the said intake path. 11. A motorcycle under claim 9 or claim 10, whereby the said headlight mount consists of an aerodynamically shaped housing around the motorcycle's handlebar axis. 12. A motorcycle as per any of the preceding claims, which has a channel provided at the point of maximum impact force while the motorcycle is mostly moving in a straight line. 13. A motorcycle under any of the preceding claims where the air container has a volume greater than 5 liters. 14. A motorcycle under claim 13 where the air container has a volume greater than 7.5 liters. 15. A motorcycle under claim 13 where the air container has a volume greater than 10 liters. 16. A motorcycle under claim 13, whereby the said air container has a volume of 12 liters. 17. A motorcycle under one of the preceding claims shall have one exhaust header per cylinder in the engine, mounted on a surface which is ideally facing the rear of the engine, where such header feeds air to the exhaust pipe which is a continuation from the engine to the muffler, where such exhaust pipe is positioned along the seat of the motorcycle for most of its length. 18. A motorcycle consisting of an engine with a single cylinder or a single group of cylinders, comprising one exhaust header per cylinder in the engine, mounted on a surface which is ideally facing the rear of the engine, with such headers feeding air to the exhaust pipe which is a continuation from the engine to the muffler, which is positioned along the length of the motorcycle seat for most of its length. 19. A motorcycle as per claim 17 or claim 18, where the muffler is installed in the rear of the motorcycle, behind the seat. 20. A motorcycle according to any of the claims 17 through 19 where such engine consists of more than one cylinder, each feeding into an individual exhaust header and several first-stage exhaust pipes which are part of such exhaust system, where all these first-stage exhaust pipes are positioned adjacent to the seat support along its entire length for the majority. 21. A motorcycle under claim 20 where the exhaust pipe consists of a second stage pipe at the beginning of the muffler, where the first stage pipes converge into the second stage pipe. 22. Any motorcycle under any of the claims 17 through 20 shall have more than one muffler, each muffler mounted in the rear of the motorcycle, with the exhaust pipes branching out into three separate pipes that supply air to each muffler. 23. A motorcycle under claim 22 where the second stage exhaust pipe extends to a position between at least two mufflers before being folded in half back to the front of the motorcycle.