摘要:
The purpose of the present invention is to provide a fuel injection device and diesel engine whereby it is possible to reduce the amount of fuel oil supplied to a combustion chamber when a valve is closed. A fuel injection device (10) is provided with a housing (14), a needle valve (26), a spool valve (44) provided to a distal end of the needle valve (26), and a vertical groove (23) formed in a different position from fuel injection holes (16a-16d) and communicated with a fuel supply path (24), a fuel oil introduction space (27) through which fuel oil passes being formed in the spool valve (44), the fuel oil introduction space (27) being communicated with the vertical groove (23) and the fuel oil introduction space (27) moving to a position of communication with the fuel injection holes (16a-16d) when the fuel supply passage (24) is open, and an external peripheral face of the spool valve (44) confronting the fuel injection holes (16a-16d) and the fuel oil introduction space (27) moving to a position of non-communication with the fuel injection holes (16a-16d) when the fuel supply path (24) is closed.
摘要:
A thrust bearing segment that can improve the load-bearing ability of a thrust bearing is provided. A thrust pad (18) supports a thrust collar (17) while resisting a load in a rotation axis direction acting on the thrust collar (17) provided on the crankshaft (2) and has a recess circumferentially provided in at least one of an outer circumferential edge having an outer circumferential surface facing radially outward with respect to the rotation axis and an inner circumferential edge having an inner circumferential surface facing radially inward with respect to the rotation axis.
摘要:
Bending of a lubricant branch pipe can be reduced as much as possible, the pipe length of the lubricant branch pipe can be reduced as much as possible, and pressure loss of the lubricant that flows in the lubricant branch pipe can be reduced. A central axis of a first oil channel (15), which passes through a main-bearing cap (9) in a plate-thickness direction thereof, and a central axis of a second oil channel (16), which passes through a base-plate saddle (12) in a plate-thickness direction thereof, intersect at 0 degree to 45 degrees; a central axis at one end of a lubricant branch pipe (20), which is connected to an inlet portion of the second oil channel (16), and a central axis of the lubricant branch pipe (20) excluding the one end also intersect at 0 degree to 45 degrees; and the lubricant branch pipe (20), excluding one end thereof, extends in a straight line in the widthwise direction of the base plate.