| Launching the EPS 708 test bench in early June was a big deal for Bosch Australia as it was one of the first countries in the world to launch the EPS 708 to the diesel market. Bosch says it has been very well received by diesel workshops as it is a standalone piece of equipment that is reasonably small, easy-to-use and quick to set up. With injection pressures on most modern common rail diesel engines around the 2000 bar and rising this new bench is the ‘benchmark’ and capable of pressures of up to 2500 bar. If pressures upward of 2500 come about, kits can be designed to extend its capability so this piece of equipment will not become obsolete in the near future. The EPS 708 diesel test bench is specially designed for testing most popular brands of common rail pumps and injectors including Bosch, Denso, Siemens and Delphi. Warranty evaluations are also possible for Bosch components. The working area of the test bench is covered by a robust hood, providing protection for the operator. As a result, a coupling cover for the drive mechanism is no longer required. This reduces the set-up time for pump assembly even further while increasing operator safety. The test bench motor cuts out immediately if the hood is raised during operation. Bosch is the first manufacturer in the world to introduce a retrofit package for workshop diesel testing to determine variations between individual injections through shot-to-shot deviation measurement. In comparison with conventional measuring systems this new procedure extends the test scope to cover specific fault scenarios. The technique renders multiple tests unnecessary and avoids repeated removal and installation of the vehicle’s injectors. Around 25 percent of common rail diesel engines in passenger cars are now fitted with Piezo injectors so Bosch has released the CRI Piezo test set for the EPS 708 and 815. In addition to leakage tests and injection measurements for different engine operating states, the test set can be used to monitor coupler filling and check the Piezo module for insulation faults. A new multi-clamping system for injectors reduces set-up times and enables flexible, precise working. Up to four common-rail injectors for commercial vehicles or six solenoid or Piezo common-rail injectors for passenger cars can be clamped to the EPS 708 at the same time. The multi-clamping system features a universal injection chamber for injectors as well as fast-action clamping. Its innovative design offers workshops many practical advantages, such as leak-free assembly of commercial vehicle injectors and cushioning of the individual injectors to protect the test pressure lines. Injection quantities are measured electronically, while the pressure feed for the pump and lubricant supply is also regulated electronically. Service intervals for test oil or filter replacement are monitored and displayed electronically. Additionally, the self-diagnostic system of the test bench provides the workshop with reliable information concerning unscheduled servicing requirements, such as an additional filter change. Hydraulic components are protected from contamination by an integrated filter in the new high-pressure rail. The rail is also equipped with an integrated cooling system to maintain a low temperature during continuous testing. |
