DAF is introducing several updates to the 12.9-litre Paccar MX engine, in a bid to help operators achieve greater fuel efficiency and lower operating costs.
Among the additions are new pistons, optimised fuel injection and a fully encapsulated exhaust manifold unit that together are said to ensure substantially lower fuel consumption and CO2-emissions.
The 12.9-litre Paccar MX engine is fitted to the popular DAF CF85 and XF105 truck models, and is known for its reliability and performance.
The engine also has an excellent reputation for fuel efficiency. While further optimising this, DAF says it first concentrated on those measures that are valuable at partial load, which is how trucks drive 80% of the time.
As a result, the 360bhp, 410bhp and 460bhp versions of the MX engine all have new pistons that have better thermal qualities and need less cooling.
This means a smaller oil pump is sufficient for maximum efficiency and less friction loss. At the same time, the injection angles and engine management system have been re-optimised.
Elsewhere, other innovations have been implemented to improve fuel efficiency, and reduce CO2 emissions and the total cost of ownership even further.
For example, the engines in the DAF CF85 and the XF105 switch off automatically after five minutes of idling. Also, as well as the standard 16-speed gearbox there is now a lighter, manual 12-speed gearbox, so the driveline can be even better matched to the application.
