Kawasaki Jukogyo Kabushiki Kaisha

Yoshishige Sakai

Hayato Iwasaki

Yuto Sakane

Yuji Kamei

Hidekazu Iwasaki

Kenji Yoshimura

Ryo Morihashi

Shintaro Yoshihara

Youhei Nakajima

Yoshirou Tokunaga

Daichi Kubo

Tomohiro Ueno

Takayuki Imai

Hideaki Kurokawa

A method of improving corrosion resistance of a cylinder cover including a port that is an intake port or an exhaust port. The cylinder cover is configured such that an annular cooling water passage is formed between an inner peripheral surface of the port and a valve seat ring when the valve seat ring is inserted in the port. The method includes forming a weld overlay layer on each of sealed regions of the inner peripheral surface of the port by laser metal deposition using a welding material made of a nickel-based alloy, a copper alloy, stainless steel, or a titanium alloy, the sealed regions being positioned at both sides of the cooling water passage, respectively.

Cylinder cover and method of improving corrosion resistance thereof

A control system in a gas engine includes a water injection means which injects water toward an interior of a cylinder in the gas engine; a water injection control means which controls the water injection section; and a knocking occurrence ratio measuring means which measures a measurement value of a knocking occurrence ratio in the cylinder. The water injection control means controls the water injection means to set the amount of the water injected toward the interior of the cylinder, based on a deviation between the measurement value and a target value.

Gas engine, control system and control method for gas engine

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Miki, Japan

Yoshishige Sakai