Cylinder Deactivation

Jacobs' Cylinder Deactivation (CDA) system aids in meeting stringent fuel economy standards such as the new ultra-low NOx standards and drive cycle testing.

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Jacobs Vehicle Systems Cylinder Deactivation Technology

Performance benefits of Jacobs’ CDA system

  • Fuel economy improvements through reduced pumping losses and friction
  • Faster engine and aftertreatment system warm-up
  • Improves efficiency in firing cylinders during low load operation
  • Improves emissions by keeping the aftertreatment system hot during low load operation
  • Minimizes cooling of aftertreatment during coasting
  • Hydraulically actuated mechanism integrates into pushrod or bridge
  • Modular and compatible with High Power Density® engine brake technology
  • An optional feature of Jacobs’ Lost Motion VVA
Cylinder Deactivation performance graph

How Jacobs’ CDA works

Cylinder Deactivation leverages Jacobs’ well-established componentry to disable engine valves in selected cylinders allowing a large engine to have the fuel economy of a smaller engine. Also, higher exhaust temperatures in operating cylinders maintain aftertreatment temperatures at low load conditions and start-up.

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Download this information package for more details and technical information about Jacobs’ Cylinder Deactivation system.