Bosch Engineering IPC-450P Piezo test control system for common-rail systems OVERVIEW OF INJECTOR PUMP CONTROL (IPC) The operation of common-rail systems under test conditions takes high demands to measuring and testing technology regarding the reproducibility and reliability. The IPC product family from Bosch Engineering GmbH was specially designed for development, endurance testing and quality assurance. Due to different fields of applications it is possible that the IPC runs with single components of common-rail systems, such as high-pressure pumps, as well as entire common-rail systems including injectors and actuators of the high-pressure control circuit. IPC test control units are modular build of a control unit and power stage unit, and therefore enable adaption to the respective test requirements. The wiring harness included in the scope of delivery connects the sensors and actuators of the common-rail system with the test control unit. The scope of delivery also includes PC software that serves as a graphic configuration and operation interface. Communication with the test control unit takes place via a USB connection or CAN interface. Functions  Drive and control of complete common-rail systems, including rail pressure control  Modular system design; scalable number of piezo power stages  Parallel operation of six piezo power stages; freely configurable up to 9 partial injections per 720° CrS  Switching between charge and voltage regulation can be parameterized  Charge voltage individually adjustable for each injector  Current-Gradient-Control: Parameterizable presetting of the current gradient  “Flanken-Ende-Timing” (Last-Pulse-Timing)  Voltage-Degeneration-Feedback-Control  Internal revolution speed simulator  Control functionality implemented in FPGA => flexible changes of control methods can be implemented in SW  Integrated diagnostics functionality  Overvoltage protection and overcurrent shutdown  8 – 28 V operation  Active air-cooling  User-friendly calibration software  Integrated measurement data acquisition  CAN interface for remote operation (optional)  CE compliant IPC-450P TEST CONTROL UNIT The IPC-450P consists of a plug-in module with common-rail high-pressure system control and closed-loop control functionality (1 and 2 actuators) and communication interfaces (USB and CAN). Three power stage modules with two power stages each for injector actuation enable actuation of up to six piezo injectors (CRI3). As a special feature the IPC-450P enables the parallel operation of piezo power stages. The flexibility gained through simultaneous injector actuation opens up additional degrees of freedom for test planning and offers considerably shortened test times. Up to 9 partial injections per 72

Bosch Engineering – IPC-450P – Piezo test control system for common-rail systems TECHNICAL FEATURES The IPC-450P features a CrS/CaS input (60-2 pattern) to ensure angle-synchronous actuation. Supply voltage Crankshaft speed Number of piezo injectors Angle system 720° CrS (usable range depending on the position and duration of the control at the end of the segment) Speed input Crankshaft (inductive sensor) and camshaft signal (0 to 5 V); 60-2 method; alternative use of a VDÜ Minimum time between Injections (tiDiff) Minimum actuation period Injection angle Positioning accuracy of angle Buffer voltage...