Governor System; Electronic Governor Components; Digital Linear Actuator (Dla) - Kohler ECV940 Service Manual

GOVERNOR
These engines are equipped with an electronic governor or a mechanical governor.
ELECTRONIC GOVERNOR
Components
B
Governor Control
A
Unit (GCU)
E Connector
I Throttle Linkage
Electronic governor regulates engine speed at varying
loads. Typical electronic governor includes:
● Digital linear actuator (DLA).
● Throttle linkage.
● Linkage spring.
● Linkage retaining clip.
● Governor control unit (GCU).

Digital Linear Actuator (DLA)

Energizing bi-directional digital linear actuator coils in
proper sequence, causes threaded shaft to move out
of, or back into rotor, in precise linear increments. When
power is removed, actuator shaft remains in position.
DLA must initialize (fully extend) to move throttle plate to
closed position, and partially open for starting. Correct
adjustment of DLA is critical to achieve full range of
throttle plate movement. See Adjustment.
62 690 05 Rev. --
D
E
F
H
G
I
J
Digital Linear
B
Actuator (DLA)
Throttle Body
F
Assembly
Plastic Linkage
J
Retaining Clip
KohlerEngines.com
A
A
B
C
DLA Throttle Plate
C
Mounting Screws
Throttle Body Lever
G
Adapter
Governor control unit (GCU) senses engine speed
by pulse voltage inputs from EFI ECU module. GCU
regulates engine speed by variable input voltage from a
customer-supplied source.
NOTE: Actual speeds depend on application. Refer to
equipment manufacturer's recommendations.
Potentiometer Specifi cations
Wiper Voltage
0-1
1-9
9-16

Governor System

D Wiring Harness
H Linkage Spring
Engine Speed (RPM)
Low Speed Endpoint
Variable Speed Endpoint
High Speed Endpoint
45