Máy đào HuynDai R250 - P5.4

Shop manual máy đào HuynDai R250: An toan, cấu trúc, sơ đồ điện, thủy lực,

GROUP 4 POWER BOOST SYSTEM

Main control valve

E| Am: 4 Bl am

Be] swing |] FB] Boom

\

spool

Engine

LITI of"

Fuel injection actuator

pump

LH control lever

Power boost

button

—

c

5

a

g

®

E

s

=

S

Đ

Engine speed sensor

EPPR valve [\]

Power boost button signal

Power Mode

©

H ‘CO Mode switch signal

Drive signal - Drive signal * ty

- When the power boost switch on the left control lever knob is pushed ON, the maximum digging power is increased by 10%

- When the power set is at H or S and the power boost function is activated, the power boost solenoid valve pilot pressure raises the set pressure of the main relief valve to increase the digging power

Description

it is canceled after 8 sec

* Default - Power boost solenoid valve : OFF

5-7