Honda Giken Kogyo Kabushiki Kaisha

Masahiro Kawamata

Kosuke Asao

Akihiko Kobayashi

Naoki Nozaki

Yoshiaki Hamada

Hitoshi Furuhashi

Tsuneo Kajikawa

Katsumi Ebara

Takayuki Okawada

Yukio Kamo

To improve the low-temperature resistance of a blow-by gas treatment device. An air cleaner is connected through a carburetor to the intake side of a cylinder portion constituting an engine in a four-wheel buggy. A blow-by gas induction pipe is provided to connect a crankcase and one side surface of the air cleaner, so as to induce a blow-by gas from the crankcase to a return chamber defined in the air cleaner at one side portion thereof. An exhaust pipe extends rearwardly from the exhaust side of the cylinder portion along a part of the induction pipe, and is connected to a muffler. The muffler is located in the vicinity of the return chamber in the air cleaner, so as to warm the return chamber by the heat radiated from the muffler, thereby ensuring good returnability of the blow-by gas even at low temperatures. The exhaust pipe similarly warms the induction pipe.

Blow-by gas treatment for engine

An object of the present invention is to provide a speedometer capable of distinctly indicating traveling speeds in a range of traveling speeds at which a vehicle travels in most of the time. A speedometer has a scale plate provided with a main speed scale of a substantially semicircular shape. The overall scale range of the main speed scale is divided by division points into four equal sections, and scale marks 5, 10, 15 and 45 mph are marked on the main speed scale at the division points, respectively. A low-speed range, i.e., a working speed range, of 0 to 15 mph extends in 3/4 of the overall scale range and the working speed range is graduated in quinary divisions of 5 mph. Therefore, speed indications in the low-speed range can accurately be read with an increase number of digits.

Speedometer for vehicle

A frame structure for a saddle-seat vehicle supports a plurality of wheels, with at least one of the wheels being steerable, and with at least one of the wheels being driven by a power unit. The frame structure includes a main frame member. The main frame member has a generally cylindrical cross-section and is formed as a one-piece continuous tubular member. The main frame member includes a left portion, a right portion, and a curved front portion interconnecting the left portion with the right portion. The curved front portion is located above and forwardly of the power unit. A heat plate is located between the left portion and the right portion, and rearwardly of the curved front portion. The heat plate includes a plurality of lip portions which overlay the left portion, the right portion, and the curved front portion of the main frame member. The lip portion includes a pair of elastic bushings which are located between the lip portion and the left and right portions of the main frame member. A plate bracket fastens the heat plate to the main frame member. A fuel tank is located above the heat plate and the plate bracket and is spaced therefrom by the pair of elastic bushings and by a third elastic bushing provided on the heat plate. This spacing provides an air gap between the heat plate and fuel tank for cooling the heat plate. A steering column bracket is attached to the curved front portion of the main frame member.

All terrain vehicle frame structure

A crank shaft of a power unit is disposed in the longitudinal direction of a vehicular body. Accessories provided at either end portion of the crank shaft are covered with a front cover and rear covers which are removable from a casing. Front and rear drive shafts are disposed to be lower than the axial line of the crank shaft. A fan unit and an air cleaner are disposed to be higher than the axial line, so that front and rear operating spaces for inserting an impact wrench are formed in front of and in back of the front cover and the rear covers. The maintenance is performed through the operational spaces.

Structure and method for easy access to and maintenance of accessories

An air intake tube is provided for attempting to prevent, as much as possible, the entry of mud or water splashed by the front wheels of a vehicle having a structure with an engine, an air cleaner arranged adjacent to and at the back of the engine and a fuel tank positioned above the engine. The engine and other elements are mounted at an intermediate portion of a body frame having its front portion suspending the front wheels and its rear portion suspending the rear wheels. An air intake tube extends from the air cleaner toward the fuel tank. In the rear wall of the fuel tank, there is formed inwardly an accommodation recess extending backward, and the air intake tube has its open top end projecting into the accommodation recess.

Growing community of inventors

Saitama, Japan

Masahiro Kawamata