US 7,461,635 B2
Vertical multi-cylinder diesel engine
Akira Maegoya, Sakai (Japan); and Takatoshi Imai, Sakai (Japan)
Assigned to Kubota Corporation, Osaka (Japan)
Filed on Mar. 14, 2005, as Appl. No. 11/79,862.
Claims priority of application No. P 2004-079675 (JP), filed on Mar. 19, 2004.
Prior Publication US 2005/0205066 A1, Sep. 22, 2005
Int. Cl. F02M 69/46 (2006.01); F02M 35/10 (2006.01)
U.S. Cl. 123—456  [123/58.1; 123/468; 123/469; 123/184.21; 123/184.38] 10 Claims
OG exemplary drawing
 
1. A vertical multi-cylinder diesel engine comprising:
a cylinder block having a width taken between lateral sides of the cylinder block in a horizontal direction;
a common rail positioned toward one of the lateral sides of the cylinder block;
a passage forming means disposed over and spaced above the common rail so as to cover the common rail from above, the passage forming means being formed into a box-shaped structure with no branch pipe which projects in the horizontal direction from a lateral side surface of a cylinder head and extends along the horizontally lateral side surface thereof and having a width and length greater than that of the common rail and being generally vertically in line with the common rail;
a crank shaft spanning between a front and rear of the engine;
an engine cooling fan arranged at the front of the engine in front of the common rail, the engine cooling fan moving cooling air between the common rail and the passage forming means;
a gear train interlockingly operating a pump for the common rail and arranged at the rear of the engine, the gear train being accommodated in a gear-train accommodation portion part of which horizontally projects, the horizontal projection portion having a front surface to which the pump for the common rail is attached, the front surface of the horizontal projection having a portion closer to the cylinder block than a portion for attaching the pump for the common rail, which faces a rear end portion of the common rail from behind the common rail; and
the common rail having, at an end portion of the common rail from a rear end portion, both horizontally lateral sides, one of which is opposite to the cylinder block side, the pump for the common rail being disposed on the opposite side and opposing to the rear end portion of the common rail from a horizontally lateral side of the common rail.