Fuji Jukogyo Kabushiki Kaisha

Yasuhito Yamaki

Yoshimitsu Tateno

Hiroaki Kaneko

Katsumi Nakazato

Kunio Aiage

An engine exhaust apparatus comprises a sound suppressing section for lowering the exhaust noise level as an exhaust gas discharged from the exhaust port passes through it. The exhaust apparatus is provided with an ejector section for introducing secondary air into the exhaust gas delivered from the sound suppressing section and mixing the gases, and a post-treatment section for purifying the gas mixture delivered from the ejector section. The exhaust gas discharged from an exhaust manifold gets into the ejector section through the sound suppressing section, and is then purified in the post-treatment section. Therefore, the ejector effect cannot be reduced by the sound suppressing section which is subject to high flow resistance. Thus, the exhaust noise level can be lowered with the ejector effect of the introduction of the secondary air improved considerably, and low cost and simple construction can be enjoyed.

Engine exhaust apparatus

An automatic control system for a gasoline-powered internal combustion engine of a load device, in which a switching unit is responsive to an input signal produced in response to a given operating condition of the load device and generates an operating signal by which an ignition coil is energized. A first driving unit is responsive to the operating signal and generates an output signal by which a starter device is energized. The first driving unit is also responsive to a speed discriminator signal generated by a speed sensing unit when the engine speed reaches a predetermined value and generates no output so that the starter device is de-energized when the engine speed reaches the predetermined value. A second driving unit is also responsive to the operating signal from the switching unit and generates an output signal for a predetermined time interval so that a throttle valve of an engine carburetor is closed for the predetermined time interval determined by the output signal from the second driving unit. In the absence of the output signal from the second driving unit, the throttle valve is opened to a predetermined degree of opening, whereby the engine is allowed to continuously operate.

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Tokyo, Japan

Yasuhito Yamaki