No steps, the Deutz way
Launching the 8280 TTV in autumn 2020 (see profi 11/2020), Deutz-Fahr finally closed the gap between the 7 and 9 series, although the 8280 TTV with its 2.92m wheelbase is more or less identical to the 7250 TTV, the key difference being the transmission. However, in order to achieve the extra gee-gees of up to 211kW/287hp, our test machine hosts the TTCD version of the 6.1 LO6 Deutz six-cyl unit, whereas the 181kW/247hp 7250 gets a TCD motor.
Differences? Well, for starters there’s an extra turbo concealed beneath the bright green bonnet of the 8280. But that’s far from the only point of separation: the pressure in the common rail injection system is also ramped up to 2,000 bar, versus 1,600 in the 7250; and durable steel pistons are used instead of aluminium ones.
Another special feature is the second water cooler, which, in addition to the transmission and hydraulic oil, cools down the air of the first charge stage before the usual air-to-air intercooler comes into play downstream of the second turbo (with up to 3.8 bar boost pressure). The engineering team hasn't gone for a variable geometry turbo to avoid any potential issues.
High output…
All sounds rather intriguing, but what does it mean on the dynamometer? As usual we packed our test 8280 off to the DLG to gather the numbers. On the dyno, an impressive 193.5kW arrived at the rear pto at a rated
