Yanmar Co., Ltd.

Toshio Kamiyama

Masashi Sagara

Shinji Nishimura

Junichi Samo

Katsuyuki Shiota

Yasuhiro Kanazu

Jyunichi Samo

A governor device comprises a first lever connecting a governor lever to a rotary speed setting lever interlockingly, a second lever pivotally supported by the first lever, and a third lever pivotally supported by the second lever, regulated its rotation amount by the second lever and interlocked with a governor weight. A fuel injection compensation spring is provided between the first lever and the second lever so as to bias them for decreasing the rotary speed for a fixed amount at the time of low speed rotation. A compensation starting rotary speed setting device, which is a set load changing means for the fuel injection compensation spring, is provided on the first lever near the fuel injection compensation spring.

Governor device

The present invention provides an engine cover structure for an engine () whose cylinder head () is covered at three of front, rear, right and left sides thereof by a fuel tank (), an air cleaner () and a muffler (), respectively, comprising a cover () which covers the remaining one side and/or a top side of the cylinder head ().

Cover structure for engine

A diesel engineof the present invention comprises: a camshaftwith a cam; a fuel injection pumphaving a plunger; a tappet for driving the plunger; and a slide portion. The tappet includes a rollerand a roller tappet. The rollerserves as a rotor which abuts against the camso as to drive the fuel injection pump, and a roller tappetserves as a support portion for supporting the rotor. The slide portionslidably fits to the support portion. The roller tappethas a tappet guide serving as a projection for restriction of rotation, and the slide portionhas a guide grooveinto which the projection is fitted. Therefore, the rotor and the cam abutting against the rotor can be prevented from abrasion so as to maintain high accuracy in controlling slide stroke of the plunger.

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Osaka, Japan

Toshio Kamiyama