Abstract: To efficiently cool accessory equipment used in controlling an electric motor of an electric vehicle. A storage box and a vehicle body cover are provided under a seat for a rider to sit thereon. The storage box and the vehicle body cover are formed in such a way as to surround the storage box. Driver units for controlling an electric motor as a power source are provided between the storage box and the vehicle body cover. The vehicle body cover is provided with intake ports for guiding headwind as cooling air for the driver units into the vehicle body cover and exhaust ports for discharging the headwind guided in through the intake ports to outside of the vehicle body cover.

Abstract: There is provided a vehicle frame structure for a motorcycle having an appealing appearance, which structure can be assembled lightweight and compact in size and at a reduced cost. The vehicle frame structure includes a head block (2) including a head tube (3), a main frame (11) forked leftwards and rightwards from the head block (2) to form a pair of main frame half portions (11a, 11b) extending rearwardly thereof, and swing arm brackets (8) extending downwardly from rear ends of the main frame half portions (11a, 11b). An inner frame portion (21) of the main frame (11) and the swing arm brackets (8) in their entirety or respective inner portions of the swing arm brackets (8) are integrally formed by an inner member (19) prepared from a metal casting, and at least an outer frame portion of the main frame (11) is formed by an outer member (20) prepared from a sheet metal.

Abstract: A motorcycle in which a fuel tank and a radiator are disposed on the lower side of a floor tunnel portion disposed in the area ranging from the rear side of a head pipe for steerably bearing a front wheel and a steering handle to the lower side of the front end of a rider's seat to make it possible to arrange component parts while effectively utilizing the space on the lower side of the floor tunnel portion.

Abstract: A motorcycle is provided having front and rear wheels. A frame is supported on and connected to the front and rear wheels. The frame includes a rear swing frame pivotally connected to a front frame. A seat and an engine are mounted to the frame. The engine is disposed between the front and rear wheels. A radiator is mounted to the rear swing frame and is disposed between the engine and the rear wheel. A fan assembly is connected to the radiator and is disposed rearward of the radiator. An inner fender is disposed between the radiator and the rear wheel.

Abstract: A motorcycle is provided having front and rear wheels. A chassis is supported on and connected to the front and rear wheels. An engine is mounted to the chassis and includes front and rear cylinder heads joined to an engine block. Front and rear mounting assemblies are provided for mounting the engine to the chassis. The rear mounting assembly includes a pair of laterally spaced-apart support plates secured between the engine and a top frame structure of the chassis. The support plates are disposed rearward of the rear cylinder head. A radiator is mounted to the chassis. A thermostat is connected between the engine and the radiator and is operable to control coolant flow from the engine to the radiator. The thermostat is disposed between the support plates.

Abstract: A radiator support structure in which in case a radiator is supported in a housed state between down pipes, the effective area of the radiator can be increased. A radiator is supported in a housed state between down pipes branched in two directions from a head pipe and extended downward. An upper part support is provided on the upper surface of the radiator, a lower part support is provided on the lower surface of the radiator, and the radiator is supported by the down pipes via the upper part support and the lower part support.

Abstract: An off-road vehicle has a frame. A pair of front wheels and a pair of rear wheels support the frame. The frame supports at least two seats. An engine powers the off-road vehicle and has a crankshaft. A transmission has an output shaft driven by the crankshaft. The output shaft drives the front and rear wheels. Each seat has a front end, a rear end and a bottom end. The crankshaft is positioned between the output shaft and the rear wheels. The crankshaft and the output shaft are disposed between a generally vertically extending first plane including the front end of the seat and a generally vertically extending second plane including the rear end of the seat. The crankshaft and the output shaft also are disposed below a generally horizontally extending third plane.

Abstract: A motorcycle is provided having front and rear wheels. A frame is supported on and connected to the front and rear wheels. The frame includes a rear swing frame pivotally connected to a front frame. A seat and an engine are mounted to the frame. The engine is disposed between the front and rear wheels. A radiator is mounted to the rear swing frame and is disposed between the engine and the rear wheel. A fan assembly is connected to the radiator and is disposed rearward of the radiator. An inner fender is disposed between the radiator and the rear wheel.

Abstract: A vehicle is capable of maintaining a cooling capacity of a heat exchanger constant. The vehicle includes ahead pipe, a main frame connected to the head pipe so as to extend rearwardly and downwardly, an engine arranged below the main frame and including a cylinder having a cylinder shaft, which is inclined forwardly and obliquely upward at a predetermined angle, leg shields that cover the front of legs of a driver of the vehicle, a radiator arranged within the leg shields to cool the engine, and a reservoir tank arranged below a lower surface of the cylinder of the engine within the leg shields and connected to the radiator.

Abstract: A motorcycle having a radiator positioned between an engine and a rear wheel and including an air management system for guiding cooling air to the radiator. The air management system includes a pair of top ducts, a middle duct, a bottom duct and a pair of rear ducts. The top and middle ducts extend over the engine, while the bottom duct extends below the engine. The rear ducts are disposed rearward of the engine.

Abstract: The cooling system of a skid-steer loader provides for heat exchangers, e.g. liquid, oil coolers, mounted in the upper portion of an engine compartment and in direct communication with a forced air flow. Circulating air is drawn into the engine compartment from the rear, is carried over the engine and is blown out through the heat exchangers to cool the liquid within the heat exchangers. The housing of a centrifugal fan is rigidly coupled to the engine block and the fan is also directly coupled to the engine flywheel. This allows for closer tolerances between the fan and its housing which results in higher efficiency because this dual coupling to the engine inhibits differential vibration between the fan and the housing. Interconnection between the heat exchangers and fan housing is via a flexible bellows and an air diffuser.

Abstract: An integrated engine guard oil cooler is mounted to a motorcycle. The cooler is a hollow tube having an inlet, an outlet, a plurality of cross-sectional restrictions in its interior, and a plurality of radial cooling fins on its exterior. The tube has a shape such that, when the inlet and the outlet are mounted on opposite sides of the lower frame of a motorcycle, the tube extends outwardly from each side of the frame, then extends upwardly, and then extends inwardly to join and form an enclosed passageway. When the inlet and the outlet communicate with the oil reservoir of the engine, oil flows through the tube with successive pressure increases and pressure decreases as it passes the cross-sectional restrictions and heat from the oil is transferred to the ambient air through the radial cooling fins.

Abstract: A chassis frame for a vehicle such as a motorcycle is provided with an engine mounted at the chassis frame and an engine guard near the engine spaced apart between chassis frame and the engine to protect the engine. The engine guard protrudes toward the chassis frame. An inclined surface is formed inside the chassis side of the engine guard so as to be oppositely faced against the engine, and an air guide passage is formed between the inclined surface and the engine. During operation of the vehicle, the air or wind passes through the air guide passage to enhance the cooling of the engine. The aforementioned arrangement prevents the disturbance or prohibition of the flow of engine cooling air during operation of the motorcycle while also enabling a relatively high degree of freedom in design with respect to an outer appearance of the engine guard and vehicle.

Abstract: A method for managing oil temperature for a vehicle engine comprises the steps of (a) determining a preferred temperature window for oil in operation of the vehicle, comprising a first, lower temperature, and a second, higher temperature; (b) pumping oil from the vehicle engine to a control valve controlling oil passage into a radiator, and bypassing the radiator via a by-pass passage in the control valve more than seventy-percent of the oil to return to the vehicle engine without passing through the radiator upon cold start-up; (c) closing the bypass passage at the first oil temperature, forcing all oil entering the control valve to pass through he radiator before returning to the vehicle engine; (d) starting a forced-air fan at the second temperature to urge ambient air through air passages of the radiator, thereby enhancing ability of the radiator to cool the oil passing through.

Abstract: A fluid cooling arrangement for a motorcycle including a fluid cooler with an outer housing and an inner plate. The outer housing includes an outer face and an inner face. The inner plate is mounted to the inner face of the outer housing. A continuous fluid passage is defined between the inner face and the inner plate, and the fluid passage extends between a fluid inlet and a fluid outlet. The fluid cooler mounted to a primary drive of a motorcycle. The primary drive connects an output shaft of the engine with an input shaft of a transmission. The fluid inlet is in fluid communication with a source of heated fluid from the engine.

Abstract: A heat deflector for a Harley-Davidson™ v-twin engine motorcycle or a similarly designed and styled motorcycle having a similar v-twin engine. The heat deflector is mounted above the rear cylinder of the v-twin engine and between the leg of a user and the rear cylinder of the v-twin engine. The heat deflector deflects hot air away from the leg of the user and away from saddlebags that may be mounted behind the leg of the user bilaterally on the rear wheel of the motorcycle. The heat deflector provides greater comfort for a user on a long distance drive. It is constructed to blend seemlessly with the appearance of the motorcycle and it reduces condensation in saddlebags. The heat deflector of this invention provides much of the comfort of an alternative designed motorcycle with a fairing enclosing the engine while retaining the distinctive appearance of the Harley-Davidson™ or a Harley-Davidson™ type v-twin engine motorcycle.

Abstract: The motorcycle frame involves a “bridge frame” in which a motor oil reservoir is incorporated. The bridge frame has two longitudinal tubes arranged at a distance from each other and basically symmetrically to the central longitudinal plane of the motorcycle, the one end of which, respectively, is connected with the steering head bearing tube, and which are connected with each other in the region between the steering head bearing tube and its other end through a front cross tube near the steering head bearing and a rear cross tube. The longitudinal support tubes and the cross tubes form a closed fluid system, which is used as a motor oil reservoir.

Abstract: Apparatus of unitary construction and including an oil filter support, an oil cooler and an oil filter is employed to filter and cool engine oil, the oil passing along a serpentine path in the oil cooler after being filtered and before being returned to the motorcycle.

Abstract: A multi-cylinder internal combustion engine draws oil from an oil reservoir with an oil pump, and supplies oil to individual areas of the engine, after passing the oil through an oil filter and an oil cooler. A filter case containing an element of the oil filter is mounted to a side surface of the engine to facilitate the removal and replacement of the case. The oil cooler and a balancer are each respectively mounted to a front central portion of the internal combustion engine to enable oil cooling by an air-cooling effect of a running airflow, and to balance weight in the left-right direction of the internal combustion engine. Oil discharged from the oil cooler is introduced to a substantially central portion of the main gallery, to achieve uniformity of oil pressure supplied to individual bearing portions and uniformity of cooling of the individual bearing portions.

Abstract: A motor vehicle with a forward-mounted engine and a forward-situated air intake has a tubular chassis element running in the longitudinal direction of the vehicle. Between the air intake and the chassis element there is a guide arrangement for leading air into and through the chassis element past at least one major vehicle component, advantageously the vehicle's gearbox, situated inside the chassis element. Downstream from that major vehicle component there is an air outlet.

Abstract: A thermostat housing assembly for a motorcycle engine includes a body portion defining a cavity and an inlet port communicating with the cavity. The inlet port is configured to be directly connected to a water jacket outlet. The thermostat housing assembly further includes a return port communicating with the cavity and configured to be coupled to a return line. A thermally-responsive valve in the cavity selectively prevents and allows communication between the cavity and the return port. Preferably, the thermostat housing assembly further includes a second inlet port communicating with the cavity and configured to be directly connected to a second water jacket outlet. Further preferably, the first and second inlet ports are substantially parallel to each other and the first inlet port is longer than the second inlet port. Each inlet port includes a connector for connecting the inlet port to a water jacket outlet.

Abstract: An apparatus for feeding fresh ambient air to an internal combustion engine of a motor vehicle, includes a front lamp assembly with an ambient air intake tract associated with the lamp assembly for providing an air communication passage between an exterior of the motor vehicle and an engine compartment. The air intake tract is adapted to direct an ambient air to an engine compartment bypassing an engine cooling radiator. The air intake tract is in the form of a flattened funnel secured to a lamp housing.

Abstract: An air management system for a motorcycle including a first air channel and a second air channel. The first air channel defines a first passageway extending through a body of the motorcycle, the first passageway having an inlet located on a first side of the motorcycle and an outlet located under a seat of the motorcycle. The second air channel defines a second passageway passing through the body of the motorcycle, the second passageway having an inlet located on a second side of the motorcycle and an outlet in communication with an engine air inlet. The first and second passageway inlets are relatively symmetrically disposed relative to a longitudinal axis of the motorcycle. The first air passageway delivers cooling air to a radiator that is disposed beneath the motorcycle seat, while the second air passageway delivers air to the engine air inlet. An air filter is disposed in a terminal portion of the second air channel and is oriented relatively transverse to the motorcycle axis.

Abstract: An automotive engine-cooling fan assembly uses pairs of overlapping fans to improve flow uniformity through the heat exchanger cores and to maximize the amount of fan power that can be achieved with limited motor sizes. One fan of each pair has upstream supports and the other has downstream supports, and these supports are so configured to minimize the axial dimension of the assembly. The use of banded fans maximizes fan performance, and blade skew minimizes fan noise.

Abstract: To provide a cooling apparatus for a vehicle enabling protection of a cooling device by effectively utilizing a vehicle frame. The cooling apparatus, which is attached to a vehicle including a vehicle frame and a steering member provided at a front upper portion of the vehicle frame, has a heat exchanger, which performs thermal exchange with the outside air. The heat exchanger is provided within an area formed with a vertical plane passing through a front end of the vehicle frame and a horizontal plane passing through an upper end of the steering member.

Abstract: A fender assembly and associated air transfer and dirt protection system for an off-the-road sports racing motorcycle. The fender assembly incorporates an upper portion and a lower portion which are mated to define an air transfer duct which extends from a forward region of the upper portion upper surface to an air exit opening at that same upper surface which is located adjacent the air receiving surface of an engine radiator. The fender assembly is configured for co-pivotal movement with the steering fork assembly of the motorcycle such that the duct will supply coolant air into the radiator notwithstanding the pivotal or steering movement of the forward wheel of the vehicle. A venturi restrictive region is formed within the air transfer duct to enhance the velocity of air exiting into the radiator. To control the buildup of mud at the underside of the fender, the upper portion of the fender is configured of a polymeric material, which incorporates an upwardly disposed pigmented layer.

Abstract: A frame of a motorcycle is designed to allow for a simplified layout of an intake passageway. The frame includes left and right main frames. Rear ends of the left and right main frames are connected to upper parts of left and right pivot plates. Upper parts of the pivot plates have left and right upwardly extending sections jutting up higher than the rear ends of the main frames. A rear cross member is suspended between the left and right upwardly extending sections. An upper surface of the rear cross member supports a rear section of a fuel tank. A rear shock absorber bracket is provided on the rear cross member for supporting an upper part of a rear shock absorber. A space is defined beneath the rear cross member. An intake passageway, including a carburetor and a connecting tube, as well as an exhaust pipe and the rear shock absorber, are arranged in this space.

Abstract: A motorcycle that includes a frame, a steering assembly, front and rear wheels, and an engine/transmission assembly. The motorcycle also includes an engine cooling fan that creates a flow of cooling air across the engine. The motorcycle also includes an air box and an air box delivery system that provides air to the air box. The air box is mounted to the frame and includes an air filter, an inlet located outside of the filter, and an outlet located inside of the filter such that air entering the inlet passes through the filter before exiting through the outlet. The air box delivery system includes a passage that is substantially perpendicular to a longitudinal axis of the frame and in fluid flow communication with the air box, the passage directing the flow of air upwardly into the air box.

Abstract: A fender assembly and associated air transfer and dirt protection system for an off-the-road sports racing motorcycle. The fender assembly incorporates an upper portion and a lower portion which are mated to define an air transfer duct which extends from a forward region of the upper portion upper surface to an air exit opening at that same upper surface which is located adjacent the air receiving surface of an engine radiator. The fender assembly is configured for co-pivotal movement with the steering fork assembly of the motorcycle such that the duct will supply coolant air into the radiator notwithstanding the pivotal or steering movement of the forward wheel of the vehicle. A venturi restrictive region is formed within the air transfer duct to enhance the velocity of air exiting into the radiator. To control the buildup of mud at the underside of the fender, the upper portion of the fender is configured of a polymeric material, which incorporates an upwardly disposed pigmented layer.

Abstract: The present invention provides a motorcycle that includes a frame, a steering assembly, front and rear wheels, and an engine/transmission assembly. The motorcycle also includes an engine cooling fan that creates a flow of cooling air across the engine. The motorcycle also includes an air box and an air box delivery system that provides air to the air box. The air box is mounted to the frame and includes an air filter, an inlet located outside of the filter, and an outlet located inside of the filter such that air entering the inlet passes through the filter before exiting through the outlet. The air box delivery system includes a passage that is substantially perpendicular to a longitudinal axis of the frame and in fluid flow communication with the air box, the passage directing the flow of air upwardly into the air box.

Abstract: A motorcycle comprising a frame; an engine mounted to the frame; a steering assembly interconnected with the frame; a front wheel rotatably mounted to the steering assembly; a swingarm mounted to the frame, the swingarm including a hollow portion adapted to contain oil for use in the engine; and a rear wheel rotatably mounted to the swingarm. A removable plate closes the hollow portion of the swingarm, and first, second, and third fittings are associated with the plate. An oil breather tube may be interconnected with the first fitting, an oil pickup tube interconnected with the second fitting, and an oil return tube interconnected with the third fitting. A fixed-position caliper mounting boss is provided on the swingarm, and the swingarm includes a fixed axle for the rear wheel such that the caliper is properly spaced with respect to the rear wheel.

Abstract: An air management system for a motorcycle including a first air channel and a second air channel. The first air channel defines a first passageway extending through a body of the motorcycle, the first passageway having an inlet located on a first side of the motorcycle and an outlet located under a seat of the motorcycle. The second air channel defines a second passageway passing through the body of the motorcycle, the second passageway having an inlet located on a second side of the motorcycle and an outlet in communication with an engine air inlet. The first and second passageway inlets are relatively symmetrically disposed relative to a longitudinal axis of the motorcycle. The first air passageway delivers cooling air to a radiator that is disposed beneath the motorcycle seat, while the second air passageway delivers air to the engine air inlet. An air filter is disposed in a terminal portion of the second air channel and is oriented relatively transverse to the motorcycle axis.

Abstract: A thermostat housing assembly for a motorcycle engine includes a body portion defining a cavity and an inlet port communicating with the cavity. The inlet port is configured to be directly connected to a water jacket outlet. The thermostat housing assembly further includes a return port communicating with the cavity and configured to be coupled to a return line. A thermally-responsive valve in the cavity selectively prevents and allows communication between the cavity and the return port. Preferably, the thermostat housing assembly further includes a second inlet port communicating with the cavity and configured to be directly connected to a second water jacket outlet. Further preferably, the first and second inlet ports are substantially parallel to each other and the first inlet port is longer than the second inlet port. Each inlet port includes a connector for connecting the inlet port to a water jacket outlet.

Abstract: An intake apparatus is provided for an engine of a vehicle. The intake apparatus can introduce fresh air under the vehicle's large running wind pressure. The intake apparatus also allows the opening area and profile of an air inlet to be selected freely. The intake apparatus includes a pair of intake ducts 13 for introducing the air into the engine and an air-introducing duct 15 connected to respective upstream ends of the intake ducts 13 to provide the air inlet 14. The air-introducing duct 15 is formed independently of a cowling 16 fitted to a front of the vehicle. The air-introducing duct 15 has its leading end 15a positioned ahead of a leading end 16a of the cowling 16.

Abstract: An engine cooling apparatus adopting a separate type radiator so as to make it possible to reduce the number of parts and simplify the internal structure of a water pump by connecting left and right radiators to a water pump. One end of a laterally-extending connecting pipe mounted across the engine in right and left directions is connected to a water pipe provided at an outlet tank of a left radiator, while the other end thereof is coupled with a joint pipe provided at an outlet tank of a right radiator. Water supplied from the left radiator flows through the laterally-extending connecting pipe and meets water flow from the right radiator in the outlet tank. A water pump sucks the water collected in the outlet tank through a water duct via a water pipe provided in the lower part of the outlet tank, and pressurizes the water and supplies it to a water jacket of the engine.

Abstract: The part of the bodywork between the frame head pipe and the saddle is bent downwards and formed with a low-floor, step board at the bottom thereof. This bodywork is further formed with a tunnel structure forming an engine tunnel which is extended fore and aft and ridged upward around the center of the step board with respect to the left and right direction thereof, defining a step-through space. A pair of lower down tubes and a pair of upper down tubes, both on the right and left sides, are downwardly and rearwardly extended from the head pipe in front of the step-through space so as to frame a fuel tank and radiator, in the upper and lower positions, respectively. The fuel tank, which is arranged above the radiator, has a lower part, namely bulge portion, which bulges downwards over the upper edge of the radiator and toward the rear space of the radiator located below the fuel tank.

Abstract: The power unit for a motorcycle accodring to the present invention comprises an engine unit having a casing in which a crankshaft and a countershaft are rotatably supported in parallel to each other, and a transmission unit having a casing in which a transmission input shaft and a transmission output shaft are rotatably supported in parallel to each other to define a dry belt drive-type transmission device. Said transmission input shaft of the transmission unit is being connected to the countershaft of the engine unit so as to be rotatable together with the countershaft. A cooling fan chamber is provided at a joined portion of the casing of the engine unit to the casing of the transmission unit, said cooling fan chamber is communicated with inside and outside of the casing of the transmission unit. A cooling fan is disposed in said cooling fan chamber so as to rotate together with the connecting portion of the countershaft and the transmission input shaft in a vicinity of said connection section.

Abstract: A cooling device is efficiently arranged which simplifies and reduces the weight of piping for the cooling device by shortening the piping. A cooling water pump is arranged on a vertically elongated skid plate at one side of a crankcase. A reservoir tank is located on the other side of the crankcase. The reservoir tank is formed of synthetic resin or similar material. The reservoir tank is housed in a space between the skid plate and a front section of an ACG case of the reservoir tank.

Abstract: A vehicle has a connecting tube for air intake disposed on the same side of the vehicle as an exhaust pipe. The connecting tube and the exhaust pipe are disposed on opposite sides of one of right and left side pivot plates, the pivot plates supporting a swing arm.

Abstract: By providing a main flame extending from a head pipe and a radiator below a front part of the main frame in a motorcycle having the radiators arranged to the side of the vehicle, it becomes possible to arrange the radiator close to the main frame by providing an upper indentation in an upper corner of an upper tank towards the center of the vehicle. It also becomes possible to arrange the radiator close to an exhaust pipe by providing a lower indentation in a lower outer corner of the lower tank. An upper tank and a lower tank are the same molded part and can therefore be made with a single mold. Since the upper indented sections are provided, there is no interference between the main frame and the radiator. Since the lower indented sections are provided, there is no interference between the mainframe and an exhaust pipe. Furthermore, it is possible to increase the core surface area (heat radiation characteristics) of the middle of the radiator.

Abstract: The overall surface of the upper-cowl body and the headlamp cover attached to the front part thereof are formed with a streamlined, basic cross-sectional shape such as an arc, parabola or some analogous section, which curves with its tangent being gradually directed toward the rear, from the forward part to the rear outer sides. A pair of air intakes opening forward for guiding air for engine supercharging, cooling heat exchanger, etc., are provided on the outer sides of the headlamp cover while a pair of turn signal lenses are arranged on the outer sides of the openings of the air intakes, so that the lens surfaces are projected forward from the basic cross-sectional shape. Air flowing sidewards and rearward along basic cross-sectional shape is guided along the turn signal lens surfaces into the air intakes.

Abstract: A radiator cover for covering the side of a radiator. The inside of the radiator cover forms an expelled air path with air being expelled to the outside of the vehicle from an expelled air port of a side section thereof. An intake path for the flow of fresh air is formed in a longitudinal direction and includes an intake port and a duct. An opening section is formed in part of the duct, the opening section being opened and closed by a louver actuated by an actuation member. Expelled air thereby controllably enters the opening section into the duct and is mixed with fresh air. Thus, fresh air can be effectively temperature controlled. The mixed air is expelled from the duct to the rear of the radiator cover.

Abstract: A motorcycle includes a muffler defining an air scoop for directing air toward the motorcycle's engine and transmission assembly. The muffler also has a substantially planar upper portion and a lower portion having a convex surface.

Abstract: A vehicle drive assembly with a drivable wheel pivotably connected to a body, about an axis substantially transverse to the body, by first and second swing arms. One of the swing arms houses a motor and includes a heat dissipating member in thermally conductive association with the motor. The heat dissipating member preferably a plurality of cooling fins exposed to ambient air. The motor is housed in an end of the first swing arm opposite the body, and has a shaft that is directly engaged to a transmission within the wheel. The transmission is contained within a gearbox housing that rotates with the wheel and is formed by left and right structural gearbox halves. A wheel rim, configured to carry a tire, is attachable only to the first gearbox half, and can slide over the second half when removed from the gearbox housing, allowing the transmission to remain assembled.

Abstract: The invention is an accessory for a motorcycle of the type having a nonvertical, slanted radiator with a first reservoir, a second reservoir, and a core between the first and second reservoirs, comprising: a cover portion having an upper end, a lower end, an opening between the upper and lower ends, and an outer surface having a lower boundary at the lower end; a projecting portion having an upper surface extending generally outwardly from the lower boundary and sloping upwardly in a generally inward direction; and a means for mounting the cover portion over the radiator so that the cover portion covers the first and second reservoirs and the opening is aligned with the core.

Abstract: A motorcycle includes a fuel cell assembly having a fuel tank and a cover disposed over the fuel tank. The cover includes a pair of air inlets, and an air channel is defined between the cover and the tank for the flow of air. Such air flow is directed along the sides of the motorcycle engine between the rider's legs and the engine. The motorcycle also includes an air scoop defining an air duct. The air scoop has an intake end and an outlet end. The air flowing through the duct is directed toward the rear cylinder of the motorcycle.

Abstract: In a motorcycle having a engine, a fuel tank provided above the engine, and a carburetor provided behind a cylinder of the engine, a stiffener plate and a wind deflector plate are provided at such a position as to cover the front side of an engine upper space defined between the top of the cylinder and the bottom of the fuel tank. The stiffener plate and the wind deflector plate are supported to a pair of right and left down frames. The wind deflector plate is secured together with horn stays for mounting horns. The wind deflector plate has louvers for deflecting and guiding an air flow to the cylinder.

Abstract: An air flow directing assembly for direction and concentration of air through the radiator of an all terrain vehicle, the air flow directing assembly consisting of a radiator shroud having an upper side, a right side, a left side, a forward end, and having a plurality of inwardly facing surfaces; an air dam fixedly attached to and extending inwardly from the inwardly facing surfaces of the radiator shroud; a right air deflecting fin fixedly attached to and extending forwardly and rightwardly from the forward end of the right side of the radiator shroud; and, a left air deflecting fin fixedly attached to and extending forwardly and leftwardly from the forward end of the left side of the radiator shroud.

Abstract: A cooling fan arrangement for a motorcycle having a radiator mounted on a left or right side of a water-cooled engine. The cooling fan is provided between the engine and the side-mounted radiator. The cooling fan arrangement efficiently cools the radiator by blasting cooling air from the engine side to radiator side without degrading the appearance of the motorcycle.

Abstract: A radiator grille is provided between the radiator and the front fender without elongating the wheel base of the motorcycle. The radiator grille includes a plurality of vertically long louvers. The forward projecting distance of the louvers is shorter for louvers near the body center and longer for louvers further away from the body center. As a result, the forward ends of the louvers are located outside the rotation locus inscribed by the rear of the front fender. Furthermore, the inclination angle formed between the louver and a vertical reference line is larger for outer louvers than for inner louvers.