Engine Body; Cylinder Block; Cylinder Head - Kubota Z400-B Handbuch

ENGINE BODY
O109F013
[1]
CYLINDER BLOCK
The engine has a highly durable tunnel-type cylinder block
in which the bearings, pistons, crankshaft and camshaft are
installed.
There are two types of cylinder block. One has dry-type
cylinder liners and the other has no liners. The cylinder
liners are pressure-fitted into the cyl inder block for the
models of Z400-B, D600-B and V800-B.
O109}u14
[2] CYLINDER HEAD
(1) Inlet and Outlet Port
The cylinder head has cross-flow type inlet/exhaust ports,
which lower the heat conduction from the exhaust port to
the inlet port. The low heat conduction keeps the inlet air
from being heated and expanded by the exhaust gas.
(1)
I nlet Port
(2) Outlet Port
1
2
(2) Combustion System
Exclusive spherical combustion system "TVCS" (Three
Vortex Combustion System) - whirls the air and mixes it
with the fuel effectively to accelerate combustion and reduce
fuel consumption.
Sheathed type glow plugs are installed in the combustion
chamber to ensure easy engine starti ng even at _15
0
C
(5° F).
The injection nozzles are of the throttle type.
(1) Glow Plug
(2) Injection Nozzle
(3) Combustion Chamber
OI09FOI5
M-3