The Asper testbench allows you to perform procedures related to testing and checking Common-Rail injectors from manufacturers such as Bosch, Denso, Delphi, VDO (Siemens), Cummins, AZPI, as well as HEUI Caterpillar unit injectors installed on diesel engines of light and medium-sized automobiles, including high-speed engines of cars and trucks, buses, agricultural machinery and tractors.
The software allows coding BOSCH isa / ima cod, Delphi C2i / C3i / C4i*, Denso, VDO Siemens injectors.
Stand working pressure up to 2400 bar.
The Equipment is produced with 5.5 kW 380 V characteristics of the main drive:
The Equipment has a low noise level.
When starting the high-pressure pump, its smooth spin-up is ensured due to the use of a Schneider frequency converter in the stand.
The design of the CR test stand and the elements of its equipment meet the requirements of international standards in terms of static and dynamic parameters of ISO 4008/1 and ISO 4008/2.
Test fluid of ISO 4113 standard is used as a working fluid in the stand. The high pressure source is a high pressure fuel pump (HFP), which is driven by an asynchronous motor 4 kW, 1500 rpm. As a booster pump, a gear pump is used, which is integrated into the injection pump housing and has the same drive.
For coding Delphi injectors, a device is used that allows creating a vacuum in the injector backflow line. The set of the device that creates a vacuum includes a gear pump, a venturi tube and an electric motor. The device is installed at the bottom of the stand next to the refrigeration unit. Also, in the working (test) area at the top right, a pressure gauge is installed that measures the vacuum with an electrovalve providing vacuum access to the nozzle. In this case, the vacuum is regulated by a throttle valve installed under the monitor on the left. In the coding of Delphi injectors the response time sensor has been using for determine an injectior’s start time.
For thermal stabilization of the test liquid in the tank, the following are used:
- two radiators with forced air cooling for the backflow line from the injection pump and the backflow line from the pressure accumulator (rail).
- independent refrigeration unit with air heat exchanger.
- tubular electric heater 1000 W
Operating pressure up to 1800 bar. It is possible to increase the working pressure up to 2400 bar.
The Equipment has an electronic measurement system with the ability to check one nozzle.
The program with test plans is included in the package.
Features and characteristics of the stand:
- testing one injector with measuring by two channels, flow and overflow, the overflow has two lines for connecting
- electronic measuring system
- injector opening pulse frequency (60 – 1500 min-1);
- injector opening pulse duration (100 – 3000 µs);
- temperature control of the test liquid in the range of 0-100±1 deg.С
- regulation of test fluid pressure in the range: 0 – 2400 bar
- temperature control of the test liquid at the injector
- polycarbonate protective glass (h=10mm)
- dimensions: width 1190, depth 700 mm (*with the keybort bracket 900), height 1680
