Forward-thinking automakers and automotive suppliers know how critical it is to secure greater efficiency

Meeting global mandates will require implementing advanced combustion technologies – including combining DSF controls with Miller-cycle engines.

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.

Miller Cycle

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?

eDSF Torque

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.

With mDSF, the CO2 reduction benefits of Miller-cycle engines more than double. Only Tula offers maximum fuel efficiency gains at the lowest relative cost.

Advantages of mDSF vs Miller Cycle

Need more information about mDSF
or other Tula fuel efficiency solutions?

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