Daimler Heavy-Duty Engine Platform
The Daimler Heavy-Duty Engine Platform (HDEP) is a line of diesel engine sold under the Detroit Diesel, Mercedes-Benz, and Mitsubishi Fuso brands. The global family of engines developed in Germany, Japan, and the United States share common parts and modules. The first engine in the HDEP line, the 14.8-litre Detroit Diesel DD15, was introduced in October 2007. Mitsubishi introduced their 12.8-litre 6R10 in 2010. Mercedes-Benz introduced their engines the following year.
The HDEP engine blocks are gray cast iron and the heads are compacted graphite iron. This material is very resistant to temperature fluctuations. The engines employ Daimler's BlueTech selective catalytic reduction (SCR) process in conjunction with exhaust gas recirculation (EGR), a diesel particulate filter (DPF) and a diesel exhaust catalyst (DOC) to reduce emissions. Detroit Diesel consolidates these features into one package known as the 1-Box package. The engines also employ high-pressure common rail fuel injection (dubbed the Amplified Common Rail Fuel System by Detroit Diesel and X-Pulse by Mercedes-Benz). A single stage asymmetric turbocharger helps save weight while improving performance.
The engines in North America met the EPA 2007 standards when launched. And thanks in large part to SCR, later met the EPA 2010 standards. For the 2013 model year, all Detroit heavy-duty engines feature enhanced BlueTec emissions system. New components include a liquid-only DEF delivery system. They also feature enhanced DDEC engine electronics that contribute to improved engine control, optimized management, and accurate fuel reporting for the customer. These North American engines meet the ODB13 and GHG14 standards.
The European engines were introduced in 2011 as Euro 6 compliant. Euro 5 and EEV options were also available until 2013. Mercedes-Benz introduced the next generation Euro 6 OM471 (12.8 litre) engine in July 2015. The updated engine boasts a three percent reduction in fuel consumption and an increase in torque.
The engines are available in displacements of 10.7, 12.8, 14.8, and 15.6 litres. They are sold under three different brands and are know by different names specific to the brand.
|Detroit Diesel||DD13||12.809 litres||
|Mercedes-Benz||OM 470||10.677 litres||
|OM 471||12.809 litres|
|OM 472||14.841 litres|
|OM 473||15.569 litres|
|Mitsubishi Fuso||6R10||12.809 litres||J09|
- World Premiere for the “Heavy-Duty Engine Platform” from Daimler Trucks (Press release). 19 October 2007. Daimler AG. Retrieved on 28 April 2012.
- Mercedes-Benz OM 471 – the latest generation: Squaring the circle: lower fuel consumption and CO2 emissions, more output and torque. Daimler AG. 02 July 2015.
- Detroit Diesel DD13 product page, detroitdiesel.com