Cpv Equipped Delivery Valve - Kubota WSM 07-E3B Series Workshop Manual

07-E3B SERIES, WSM

(2) CPV Equipped Delivery Valve

The Constant Pressure Valve (CPV) is a mechanism
that maintains uniform residual pressure in the high
pressure pipe. It stabilizes overall delivery quantity
characteristics and
characteristics at low speeds.
 At high fuel pressure
The delivery valve (1), the steel ball (5) and the
snapper valve (6) are moved up together. The delivery
valve seat surface (2) opens when the fuel pressure
becomes more than the delivery valve set pressure.
 At after injection
The delivery valve (1), the steel ball (5) and the
snapper valve (6) are moved down and the delivery valve
seat surface (2) closes. The steel ball still opens on the
way and the fuel returns to the injection pump side. The
steel ball (5) closes the delivery valve hole when the fuel
pressure becomes less than the snapper valve set
pressure.
(1) Delivery Valve
(2) Seat Surface
(3) Valve Seat
(4) Orifice
(5) Steel Ball
(6) Snapper Valve
M-16
ENGINE
especially delivery quantity
(7) Snapper Valve Spring
(8) Snapper Valve Seat
A : Current Delivery Valve
B : CPV Equipped Delivery
Valve
W1015816
KiSC issued 06, 2020 A