MAN tests Bosch technology
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• German truck builder MAN is pushing ahead with its research into new technology. The company is testing F90 tractors fitted with the Bosch Electronic Diesel Control (EDC) system, and is developing composite springs for CVs.
MAN announced its interest in electronic fuel injection management systems at the last Frankfurt show, and now has 50 F90 tractive units equipped with Bosch's EDC system on trial with German operators.
The vehicles chosen for testing are the MAN 17.292 and 17.332 tractors powered by the 123kW (286hp) and 243kW (326hp) versions of MAN's 11.97-litre charge-cooled D2866LF engine.
According to technical boss Dr Klaus Schubert, the EDC system is in charge of fuel metering, but not injection advance, and is fitted on the 17.292 and 17.332 because of the nature of their fuel injection pump layout.
The MAN installation of electronic diesel control is similar to that used on the Scania 143-470 with a "drive-by-wire" layout (there is no mechanical link between the fuel pump and throttle pedal).
Although MAN's EDC tests are restricted to the 11.97-litre F90s, Schubert says the system could be developed for the vee-ten-engined 17.462.
MAN is developing an uprated 187kW (250hp) version of its 6.5-litre six-cylinder D0826 engine — rated at 138kW (186hp) and 169kW (230hp) in the M90 middleweight range — for use in its articulated buses.