Yanmar Co., Ltd.

Tohru Ogawa

Masamichi Tanaka

Satoshi Hattori

Junichi Samo

A fuel injection pumpcomprises a thermoelement CSDfor advancing injection timing in a cold temperature condition. The CSDuses a pistonfor opening and closing a sub portformed in a plunger barrelAn electronic governoris provided with a mechanism for decreasing an injected fuel quantity when an engine starts in a cold temperature condition. The mechanism shifts a rack position in a fuel-decrease direction in a cold temperature condition, and switches the rack position to a normal position in a normal temperature condition. A timing TR for shifting the rack position is set before or simultaneous to a timing TC for switch-off of the CSD

Fuel injection pump

A start assister () of a fuel injection pump, comprising a piston () inlayed into a housing (H), an upper chamber () formed over the piston (), lower chamber () formed under the piston (), wherein a sub port () is opened and closed by sliding of the piston (), and a fuel injection timing is advanced by closing the sub port (). A thermo-element () for sliding the piston is arranged on one side of the piston () in sliding direction. A telescopic pin () of the thermo-element () is arranged in a low-pressure chamber () divided into the upper chamber and the lower chamber, and a connection pin () is interposed between the telescopic pin () and the piston ().

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Osaka, Japan

Tohru Ogawa