BENDIX SR-7 SPRING BRK MODULATING VALVE 애플리케이션 - 페이지 4
{카테고리_이름} BENDIX SR-7 SPRING BRK MODULATING VALVE에 대한 애플리케이션을 온라인으로 검색하거나 PDF를 다운로드하세요. BENDIX SR-7 SPRING BRK MODULATING VALVE 9 페이지. Spring brake modulating valve
페이지 인쇄
CONTROL LINE PRESSURE
SECONDARY RESERVOIR
CONSTANT PRESSURE
INLET / EXHAUST VALVE OPEN
FIGURE 5 - CHARGING LESS THAN 107 PSI
CHARGING SPRING BRAKE ACTUATORS
BELOW 107 PSI (FIGURE 5)
With the air brake system charged and the parking brakes
released (by pushing the dash valve button in), air enters
the park control port. This opens the SR-7
air pressure to the spring brake chambers. As illustrated,
air pressure in the chambers is below 107 psi (nominally).
CONTROL LINE PRESSURE
SECONDARY RESERVOIR
CONSTANT PRESSURE
INLET / EXHAUST VALVE SEATED
FIGURE 6 - CHARGING GREATER THAN 107 PSI
4
à
à
à
™
valve to supply
à
à
à
BALANCE PORT
CONTROL PORT
DELIVERY TO SPRING BRAKES
à
CHARGING SPRING BRAKE ACTUATORS ABOVE
107 PSI (FIGURE 6)
Once the SR-7
™
valve delivery pressure reaches 107 psi
(nominal), the inlet and exhaust are closed (valve lap
position). This maintains the spring brake hold-off pressure
at 107 psi (nominal).
BALANCE PORT
CONTROL PORT
DELIVERY TO SPRING BRAKES
à