AVM2PC

The AVM2-PC Test Stand is an advanced personal computer based diesel fuel pump test stand that is designed
to save you time. In fact, it can save you as much as 50% of the time it takes to use another test bench.
The secret of the AVM2-PC is in its ease of use. Although it is a sophisticated piece of equipment, it allows the operator to use the test stand quickly,
so you can potentially test more diesel pumps using the AVM2-PC than you could using another test stand system. Combined with the ability to test
“All Makes” of fuel injection equipment, the AVM2-PC becomes the obvious choice.
The powerful computer at the heart of the stand has the well known, user friendly Windows™ operating system already installed. The AVM2-PC
control software, Magmah, has been written with speed and ease of operation in mind. In addition it is possible to select semi automatic operation from
an Auto Step test plan for a further saving of time.
User Friendly and Adaptable Design
Ease of use was a prime consideration in the design of the AVM2-PC range. This results in an adaptable and user-friendly test stand, with the facility
to handle virtually all automotive type in-line, rotary and common rail pumps up to 12 cylinders, as well as EUI, EUP and Common Rail injectors with
minimum stress and strain on the operator.
Advanced Video Metering
With the introduction of the PC based AVM2-PC, a development of the successful AVM test bench, Hartridge™ is able to offer the diesel specialist
the technology needed for the future. This stylish machine, incorporating uprated drive motors for improved torque at low rpm and improved test oil
cooling capacity, complies with ISO4008, EEC & UL/CSA standards. It benefits from in excess of 20 years video metering experience in applications
ranging from field service, research and development, to production.
With the ability to match the unrivalled speed of Hartridge™ video metering, the AVM2-PC system has the capacity to handle pumps up to 12 cylinders.
With its intelligent firing order learning, the AVM2-PC allows pumps to be connected to the test injectors in the most convenient way. Injector
changeover is now as quick as any non-sealed system, using an innovative "plug-in" design; while the injector mount has vertical and 180° adjustment.
In addition to presenting full information on pump or injector output, the 15” TFT also has the facility to show test data simultaneously. The test stand
is controlled using a standard keyboard and an optional printer is available to provide a colour hard copy record of pump or injector performance.
This can be performed at any time during a test, for example results can be gathered before and after adjustments.
These and many other outstanding features, such as DC drive and a standard PC architecture (allowing connection to networks or a modem and future
upgrades) make the AVM2-PC the ultimate test stand for future diesel fuel pump testing.
The high torque direct drive DC motor fitted to the AVM2-PC completely eliminates a transmission system leading to greatly reduced cost and
complexity of servicing. It also ensures that the full output torque of the drive motor is available at the drive coupling from 30 rpm. The 20hp (15kW)
motor drives through a large 1.8kgm2 (43Ibft2) flywheel which is directly coupled to an integral anti-backlash flex coupling. For safety, both the flywheel
and the coupling are enclosed. The drive system automatically compensates for load variations, to provide a constant, pre-selectable test speed
within a range of 30 to 4000 rpm. In addition, the rate of acceleration and deceleration (ramp rate) can be set by the operator.

Pump and Injector Mounting
A system using special adaptors, permits test injector change over as quickly as any non-sealed system - with a simple, plug in action. So that the test
injector mount can be repositioned without disturbing the pump mounting brackets, the articulated support arm is pivoted beneath the front of the table.
The bed is long enough to accommodate all automotive pumps up to 12 cylinders enabling users to set a comfortable working height.
Facilities
All AVM2-PC test benches incorporate features designed to provide ease of operation. These include vertical adjustment of the test injector mount -
allowing the use of the shortest high pressure lines now being specified. All connections and associated valves are grouped together on the bulkhead,
leaving a large unobstructed self-draining work area at the front of the table for tools and fittings.
The control of noise and vibration from the pump was also a major design consideration. This has been achieved by supporting the complete motor, pump
mounting bed plate and injector arm assembly on rubber isolation mounts. In addition, careful design of the injector mounting has been made to reduce
noise.
Servicing
All test oil supply and lube system components are located on the left hand side of the test stand, with all electrical/electronic services on the right hand
side. Full access is gained by removing two easily detachable panels from each side. Test and lube oil gravity drains are provided, together with easy
access to tanks for refilling and filter changing. All electronic circuits use very reliable solid-state technology. However, should component failure occur,
LED lights and error messages will indicate which board is malfunctioning and replacement is a simple plug-in operation.
Operation Using the Computer
Main Features
Flexible with Hartridge accessories – can test in-line, Rotary, Common Rail pumps and EUI, EUP and Common Rail Injectors
PC with Windows™ operating system
Pressure phasing to 80 bar
Anti-Backlash Coupling
Two variable DC supplies (0-24V @ 3 amp)
Cooled metering unit
Back leakage temperature measurement at pump outlet
Auxiliary socket for external calibrator control and point of injection sensors
Analogue speed trim for fine control of governors
Digital pressure displays
Drive "nudge" control
Auto Step test plan editor and execution
Compact dimensions compared with other machines
12 or 8 cylinder advanced video metering
20 hp (15 kW) DC high torque motor
1.8kgm2 (43Ibft2) flywheel
Display of pump output and test stand operating data via 15” TFT
Digital Dynamic phasing (optional)
Digital Dynamic timing (optional)
Digital Advance (optional)
Digital Boost (optional)
Digital Rack (optional)
Benefits
User friendly
Industry