ENGINE TECHNOLOGY
Two of Mahle’s newest technologies are the electrical cone stack separator (left), designed to separate oil from blow-by gases in crankcase
ventilation systems and the BlueDrain fuel filtration system, engineered to provide a high level of water and contaminant filtration and
automate the process of water disposal.
TAKING THE BROADER
APPROACH
Mahle’s development of a wide range of engine technologies target improved efficiency,
reduced emissions from commercial diesels
BY MIKE BREZONICK
As the manufacturers of com- mercial engines, vehicles and equipment react to the
ever-tightening demands concerning
emissions and fuel economy, much
of the attention has been focused on
add-on technologies, aftertreatment
systems such as diesel particulate filters (DPFs), diesel oxidation catalysts
(DOCs) and selective catalytic reduction (SCR) systems.
Yet as important as these tech-
nologies are to meeting the requisite
levels of NOx and particulates and the
upcoming limits on CO2 in the heavy-
duty truck market, one thing is clear
— there is no single “silver bullet”
technology that can address all of the
needed improvements. Rather, much
of the progress in meeting those tar-
gets comes down to enhancements
throughout the engine, including some
that would appear to have little direct
effect on emissions or efficiency.
