INDUSTRY AT A GLANCE
Forward-thinking automakers and automotive suppliers know how critical it is to secure greater fuel economy.
Meeting global mandates will require implementing advanced combustion technologies, from Miller-cycle engines to electrification and autonomous technologies.
Miller-cycle engines hold fuel economy promise, but on a stand-alone basis are limited by efficiency-performance trade-offs.
DSF® works synergistically with this advanced engine combustion strategy to strengthen its advantages while addressing its challenges.
mDSF more than doubles the fuel efficiency improvement of Miller-cycle engines on a stand-alone basis, while lowering the cost per percent improvement.
See why no other fuel efficiency solution offers
greater gains at a lower cost.
What are Miller-cycle engines
Modern 2-step Miller-cycle engines employ two valve strategies to achieve either high fuel efficiency (low load cam profile) or high power (high load cam profile). However, even these two-step systems are limited by the tradeoff between best fuel efficiency and maximum torque output.
What is mDSF
mDSF couples DSF with Miller-cycle engines to further increase each cylinder’s firing options. With the addition of DSF’s “no fire” (skip) option, mDSF enables maximum cylinder flexibility to deliver requested torque, always at peak engine efficiency and superior drivability.
Key solution components include:
- Miller-cycle engine
- Individual cylinder deactivation capability
- Engine controller with mDSF
How does DSF work in tandem with Miller-cycle?
mDSF enables a more efficient Miller-cycle across its full operating range without sacrificing drivability.
Tula’s proprietary mDSF SW dynamically controls each cylinder firing at high, low or skip, to match torque demand at optimum efficiency.