Abstract: A planing boat, particularly of a small size, is provided with an airbag system. The airbag system includes at least one bag-shaped airbag body, a housing which accommodates the airbag body, a detector for detecting a collision of the boat, an expanding unit which inflates the airbag body at the time of collision of the boat, and a controller for controlling the detector and the inflation of the airbag body. In a preferred embodiment, the airbag system includes a first airbag body in the handle cover which is blown up from the handle bar to a rear side of the boat and a second airbag body in the handle cover which is blown up toward a front side of knees of a rider.

Abstract: A planing boat, particularly of a small size, is provided with an airbag system. The airbag system includes at least one bag-shaped airbag body, a housing which accommodates the airbag body, a detector for detecting a collision of the boat, an expanding unit which inflates the airbag body at the time of collision of the boat, and a controller for controlling the detector and the inflation of the airbag body. In a preferred embodiment, the airbag system includes a first airbag body in the handle cover which is blown up from the handle bar to a rear side of the boat and a second airbag body in the handle cover which is blown up toward a front side of knees of a rider.

Abstract: A snowmobile with an intercooler includes a four-stroke-cycle engine unit disposed in an engine room covered by an engine hood, and the engine unit includes an engine body, a turbocharger, an intercooler for cooling an intake-air, which is pressurized and heated up by the turbocharger, and an electric motor-driven cooling fan provided for the intercooler for introducing an outside air to the intercooler through which the air after cooling the intercooler is discharged toward the inside of the engine room.

Abstract: A snowmobile with an intercooler includes a four-stroke-cycle engine unit disposed in an engine room covered by an engine hood, and the engine unit includes an engine body, a turbocharger, an intercooler for cooling an intake-air, which is pressurized and heated up by the turbocharger, and an electric motor-driven cooling fan provided for the intercooler for introducing an outside air to the intercooler through which the air after cooling the intercooler is discharged toward the inside of the engine room.

Abstract: A planing boat, particularly of a small size, is provided with an airbag system. The airbag system includes at least one bag-shaped airbag body, a housing which accommodates the airbag body, a detector for detecting a collision of the boat, an expanding unit which inflates the airbag body at the time of collision of the boat, and a controller for controlling the detector and the inflation of the airbag body. In a preferred embodiment, the airbag system includes a first airbag body in the handle cover which is blown up from the handle bar to a rear side of the boat and a second airbag body in the handle cover which is blown up toward a front side of knees of a rider.

Abstract: A planing boat, particularly of a small size, is provided with an airbag system. The airbag system includes at least one bag-shaped airbag body, a housing which accommodates the airbag body, a detector for detecting a collision of the boat, an expanding unit which inflates the airbag body at the time of collision of the boat, and a controller for controlling the detector and the inflation of the airbag body. In a preferred embodiment, the airbag system includes a first airbag body in the handle cover which is blown up from the handle bar to a rear side of the boat and a second airbag body in the handle cover which is blown up toward a front side of knees of a rider.

Abstract: A planing boat, particularly of a small size, is provided with an airbag system. The airbag system includes at least one bag-shaped airbag body, a housing which accommodates the airbag body, a detector for detecting a collision of the boat, an expanding unit which inflates the airbag body at the time of collision of the boat, and a controller for controlling the detector and the inflation of the airbag body. In a preferred embodiment, the airbag system includes a first airbag body in the handle cover which is blown up from the handle bar to a rear side of the boat and a second airbag body in the handle cover which is blown up toward a front side of knees of a rider.

Abstract: A snowmobile four-cycle engine arrangement, includes: a four-cycle engine arranged in an engine compartment formed in the front body of a snowmobile with its crankshaft laid substantially parallel to the body width and having a cylinder case inclined forwards with respect to the vehicle's direction of travel. The engine employs a dry sump oil supplying system and an oil tank separate from the engine is provided. Another snowmobile four-cycle engine arrangement includes: a four-cycle engine having a cylinder head at its top, arranged in the engine compartment and inclined forwards with respect to the vehicle's direction of travel with an intake path provided on the upper portion of the engine body. An intercooler for cooling the intake air is arranged in a tunnel created inside the body frame for accommodating a track belt.

Abstract: A snowmobile with an intercooler includes a four-stroke-cycle engine unit disposed in an engine room covered by an engine hood, and the engine unit includes an engine body, a turbocharger, an intercooler for cooling an intake-air, which is pressurized and heated up by the turbocharger, and an electric motor-driven cooling fan provided for the intercooler for introducing an outside air to the intercooler through which the air after cooling the intercooler is discharged toward the inside of the engine room.

Abstract: A snowmobile with an intercooler includes a four-stroke-cycle engine unit disposed in an engine room covered by an engine hood, and the engine unit includes an engine body, a turbocharger, an intercooler for cooling an intake-air, which is pressurized and heated up by the turbocharger, and an electric motor-driven cooling fan provided for the intercooler for introducing an outside air to the intercooler through which the air after cooling the intercooler is discharged toward the inside of the engine room.

Abstract: A snowmobile with an intercooler includes a four-stroke-cycle engine unit disposed in an engine room covered by an engine hood, and the engine unit includes an engine body, a turbocharger, an intercooler for cooling an intake-air, which is pressurized and heated up by the turbocharger, and an electric motor-driven cooling fan provided for the intercooler for introducing an outside air to the intercooler through which the air after cooling the intercooler is discharged toward the inside of the engine room.

Abstract: A snowmobile four-cycle engine arrangement, includes: a four-cycle engine arranged in an engine compartment formed in the front body of a snowmobile with its crankshaft laid substantially parallel to the body width and having a cylinder case inclined forwards with respect to the vehicle's direction of travel. The engine employs a dry sump oil supplying system and an oil tank separate from the engine is provided. Another snowmobile four-cycle engine arrangement includes: a four-cycle engine having a cylinder head at its top, arranged in the engine compartment and inclined forwards with respect to the vehicle's direction of travel with an intake path provided on the upper portion of the engine body. An intercooler for cooling the intake air is arranged in a tunnel created inside the body frame for accommodating a track belt.

Abstract: A snowmobile four-cycle engine arrangement, includes: a four-cycle engine arranged in an engine compartment formed in the front body of a snowmobile with its crankshaft laid substantially parallel to the body width and having a cylinder case inclined forwards with respect to the vehicle's direction of travel. The engine employs a dry sump oil supplying system and an oil tank separate from the engine is provided. Another snowmobile four-cycle engine arrangement includes: a four-cycle engine having a cylinder head at its top, arranged in the engine compartment and inclined forwards with respect to the vehicle's direction of travel with an intake path provided on the upper portion of the engine body. An intercooler for cooling the intake air is arranged in a tunnel created inside the body frame for accommodating a track belt.

Abstract: In a snowmobile, a four-cycle engine is mounted in such a manner that its crankshaft is arranged along the body width direction and the central axis of a cylinder(s) is tilted rearward by angle ? with respect to the vertical direction of the body, forming a rear tilted engine. At least part of the engine intake system including an air cleaner box and throttle body, connected to the intake port(s) of the engine is accommodated in the space inside the topmost projected portion of the engine hood. Exhaust is led out to the muffler located in front of the cylinder(s) by the exhaust system connected to the exhaust port(s) at the front of the cylinder head. Further, the intake passage is arranged between the engine body and the steering post.

Abstract: In a snowmobile, an upper front half of a vehicle body of the snowmobile is covered to be openable by an engine hood in which an engine room is defined, an engine is disposed in the engine room, and a turbo-charger is mounted on the engine. In an engine structure of such snowmobile, a headlight is disposed above a rear portion of the engine hood, and the engine is arranged in a state inclined rearward downward so that a cylinder head of the engine is disposed below the headlight in a side view and the turbo-charger is arranged below the cylinder head.

Abstract: A snowmobile four-cycle engine arrangement, includes: a four-cycle engine arranged in an engine compartment formed in the front body of a snowmobile with its crankshaft laid substantially parallel to the body width and having a cylinder case inclined forwards with respect to the vehicle's direction of travel. The engine employs a dry sump oil supplying system and an oil tank separate from the engine is provided. Another snowmobile four-cycle engine arrangement includes: a four-cycle engine having a cylinder head at its top, arranged in the engine compartment and inclined forwards with respect to the vehicle's direction of travel with an intake path provided on the upper portion of the engine body. An intercooler for cooling the intake air is arranged in a tunnel created inside the body frame for accommodating a track belt.

Abstract: A snow vehicle which is capable of increasing the cooling efficiency of an intercooler thereof by reducing the influence of intense heat from a supercharger thereof, while suppressing the overall height of an engine thereof. An engine hood covers a front part of the body frame from above, and an engine room is formed under the engine hood. A supercharger is disposed in the engine room at a location forward of the engine, and an intercooler is disposed rightwardly of the engine. High-temperature air from the supercharger is cooled by the intercooler and supplied to the engine. An air inlet port is formed through a front left half of the engine hood, for taking in air for cooling the supercharger etc., and another air inlet port is formed through a front right half of the engine hood separately from the air inlet port, for taking in air for cooling mainly the intercooler and a battery.

Abstract: A planing boat, particularly of a small size, is provided with an airbag system. The airbag system includes at least one bag-shaped airbag body, a housing which accommodates the airbag body, a detector for detecting a collision of the boat, an expanding unit which inflates the airbag body at the time of collision of the boat, and a controller for controlling the detector and the inflation of the airbag body. In a preferred embodiment, the airbag system includes a first airbag body in the handle cover which is blown up from the handle bar to a rear side of the boat and a second airbag body in the handle cover which is blown up toward a front side of knees of a rider.

Abstract: A snowmobile with an intercooler includes a four-stroke-cycle engine unit disposed in an engine room covered by an engine hood, and the engine unit includes an engine body, a turbocharger, an intercooler for cooling an intake-air, which is pressurized and heated up by the turbocharger, and an electric motor-driven cooling fan provided for the intercooler for introducing an outside air to the intercooler through which the air after cooling the intercooler is discharged toward the inside of the engine room.

Abstract: In a snowmobile, a four-cycle engine has an alternator as a generator while the snowmobile body has heat exchangers through which the cooling water of the engine is cooled by heat exchange with external air and snow, in a front part and at the ceiling of a crawler house. The alternator is positioned between the four-cycle engine and the front heat exchanger. Further, an exhaust manifold is arranged at an upper position in front of the engine body while an approximately cylindrical oil filter is provided under the exhaust manifold and inclined forwards in the vehicle's direction of travel.