The 275 Series Electric Actuator is designed to mount directly on Bosch 'P' and 'RP 21' Fuel Injection Pumps in p-lace of the mechanical governor. When the 275 Series is installed on the fuel pump, an integral high performance fuel control system without external linkages or brackets results. An external fuel rack return lever is provided to manually override the actuator's control. Also provided is an adjustable internal maximum fuel limit for calibration.
The 275 Series, a second generation design that is more powerful than its predecessor, is able to control up to 16 cylinder pump-arrangements. The actuator was designed with two isolated chambers that eliminates the possibility of any magnetic particles collecting and jamming the actuator. The upper chamber, which contains spray-oil, houses the actuator linkage and the lower chamber houses the electro-magnetic components. The 275 Series typically outlasts the life of a diesel engine's.
GAC & HT has a complete line of Camshaft Bearing Retainer Kits available for the 275 series to ensure an appropriate fi t and prevent leakage. The 275 Actuator can also be installed on Bosch 'MW" and 'A' Pumps. For the most common 275 series' variations and kits available see TABLE 1.
Description
The actuator is an electromagnetic servo device which can be integrated into a closed loop control system.
An engine control system can be described as follows.
An electrical signal is generated by a magnetic speed sensor which is proportional to engine speed.
This signal is sent into the electronic speed control unit which compares it to the preset engine speed setting.
If the magnetic speed sensor signal and the preset engine speed setting are not equal, a change in current from the
Speed control unit to the actuator will change the magnetic force in the actuator.
The rotation of the actuator shaft will then adjust the fuel to the engine and cause the engine speed to be equal to the
Preset engine speed setting.
Shaft rotation is proportional to the amount of actuator current and counterbalanced by the internal spring.
Since the design has no sliding parts and is totally sealed, outstanding reliability results.
A single compression spring is used to improve reliability.
Our company was set up in 1997. We own consummate one technology engineer team. We concentrate efforts on generators&diesel parts selling. We own many country patent technologies. In almost annual short time, our products of generators parts&diesel were enter a lot of important Chinese field and arrives at world everywhere outlet already. Rely on fine quality and reputation our products have gained very good valuation in the world.
One, our generators parts main following,
A, Various different accessory of Siemens 1FC2, 1FC4, 1FC5, 1FC6 series alternators. That made by Germany Siemens, CSIEM-CSIC China and HYUNDAI Korea.
B, AVRs(Automatic Voltage Regulator) and many kinds of genuine parts for STAMFORD alternators (BC, UC, HC, LV6 series) that Made in UK or China mainland.
C, AVRs(Automatic Voltage Regulator) for Marathon(USA) & LEROY SOMER (France) generators.
D, All kinds of genuine parts for CUMMINS, Volvo PENT, MAN and
DALHATSU diesels. Main is Electrical governors and actuators.
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We will provide the perfect service and technology hold out for free if you order our products.
Our quality control system has already pass United Kingdom international mass attestation centre ISO9001: 2000 UKAS quality system certification. Now they are used the different in many important field. Our valves have exported to a lot of countries of the world already. Such as Asia, Europe, America and Africa. They are very welcomed for high quality and best price.
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