MECHANISM
1. Engine body
1.1 Closed breather
1.1.1 Function of closed breather
Closed breather system has been adopted to prevent
the release of blow-by gas into the atmosphere.
After its oil content is filtered by oil shield (4), the blow
by gas in fed back to the intake manifold through
breather valve (3) to be used for re-combustion.
(1) Breather tube
(2) Cylinder head cover
(3) Breather valve
(4)
Oil shield
(5) Rubber packing
1.2 Half-floating head cover
1.2.1 Outline of half-floating head cover
(for D1305-E4B/E4BG)
The rubber packing (2) is attached to keep the cylinder
head cover (1)
approximately 0.5 mm (0.02 in.) off the
cylinder head. This decreases the noise from the
cylinder head.
(1) Cylinder head cover (2) Rubber packing
1.3 Governor
1.3.1 Structure of three lever type fork
lever (for standard type)
The governor system is a mechanical governor that
used the flyweight (5).
The flyweight (5)
is mounted on the governor shaft that
rotates at the same speed as the crankshaft.
Since the feature of this mechanism removes the
engine speed directly as a centrifugal force of weight,
the speed control that the change in the engine
rotational speed is sensitively transmitted to fork lever
assembly (A) enabling high accuracy.
The fork lever assembly of this engine consists of fork
lever 1 (6), fork lever 2 (9), and the floating lever (7). A
slide plate is installed in fork lever 1. The governor
spring (3) is hooked to fork lever 2 (9).
The floating lever (7) installs the torque pin (8) of the
output drop prevention at the overload. The start spring
(2) is hooked to a slide plate, and holds the control rack
in the direction of the full fuel position.
Fork lever 2 (9) and the floating lever are installed in
fork lever 1 (6) with the fork lever shaft (4). The max.
torque limiter (1) limits the amount of the fuel injection
at the overload with the torque pin.
MECHANISM
1. Engine body 4. ENGINE
05-E4B SERIES,05-E4BG SERIES
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