Eaton Addresses Diesel Exhaust
Eaton is taking advantage of the fundamental architecture of a diesel engine to address exhaust gas emissions by deploying a switchable roller rocker arm on each cylinder that’s electro-mechanically actuated (not hydraulically) so that the exhaust gas recirculation system can kick in right away, even during cold starts, so that the selective catalytic reduction (SCR) system can do its job sooner rather than later. Called “iEGR”—for “Internal Exhaust Gas Recirculation”—the system, compared to systems that, say, utilize an electric heater (to heat the SCR system to 250°C or above so that it can do its job) or bigger NOx traps (to accommodate the gases) is said to require little space and uses the engine heat to do its job.
The switchable roller rocker arm, incidentally, uses rollers for the valve-lift event, which is said to be more efficient than sliding pad setups.
Mazda, the Little Car Company That Can, has been working on a number of important fronts of late.
If you’re shopping for a Mustang, you’re faced with a variety of choices, not simply in terms of the color or the wheels that you’re going to be applying to your ride, but in terms of which model you’re going to select.
There are two things that are true of automotive journalists: they like station wagons.