Kubota Corporation

Osamu Yoshii

Hiroki Oso

Tamotsu Kuno

Akihiko Kai

Kentarou Kita

Yuuji Takemura

Tomoya Hasegawa

Wataru Miyauchi

Tomoyoshi Sakano

Hidemasa Tsuji

It is an object of the invention to provide a multi-cylinder diesel engine in which a thermal damage of a common rail, and a rise in fuel temperature can be suppressed. In order to achieve the object, a multi-cylinder diesel engine in which, while the extension direction of a crank shaftis set to the anteroposterior direction, a common railwhich is directed in the anteroposterior direction is placed above an intake manifold, and an engine cooling fanis placed in front of the engine is configured so that the width direction of the engine which is perpendicular to the anteroposterior direction is set to the lateral direction, an air intake portionof the intake manifoldis placed on the outer lateral side of the both lateral sides of the common rail, the outer lateral side being opposite to a head cover, and the common railis placed in a place to which engine cooling air produced by the engine cooling fanis blown.

Multi-cylinder diesel engine

A fuel meter ( ) of a fuel injection pump is made movable for fuel metering through a governor lever ( ). A swing lever ( ) has a power input point (J) which engages with a boost actuator ( ). If the boost actuator ( ) operates in response to a delayed rise of a supercharged pressure (P), a power output point (K) of the swing lever ( ) inhibits the fuel meter ( ) from moving for fuel increase. A governor lever ( ) is connectably and separably opposed to the fuel meter ( ) from a fuel increase side and a start spring ( ) urges the fuel meter ( ) toward a starting fuel increase side. The swing lever ( ) has a pivot axis (Q) displaceable by an actuator ( ). When making a cold start, the actuator ( ) does not operate to thereby confine the fuel meter ( ) to a starting fuel increase position by the power output point (K) positioned on a fuel increase side. When making a warm start, the power output point (K) positioned on a fuel decrease side confines the fuel meter ( ) to a starting fuel decrease position (Ls).

Fuel limitation device for engine with supercharger

Growing community of inventors

Sakai, Japan

Osamu Yoshii