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Parallel Hybrid

Parallel Hybrid System pairs the diesel engine with an electric motor. This configuration takes advantage of both, allowing for diesel-only, electric-only, peak shaving, and power boost operation.

Diesel + Electric Motor with Generator Power

Diesel + Electric Motor With Energy Storage

Best suited for vessels with long waits between jobs, slow speed operation, and operating in restricted areas.

Diesel + Single Electric Motor with Energy Storage (Veth)

This traditional diesel-electric propulsion system uses a Veth azimuth thruster and propulsion control system. It’s best suited for vessels operating in restricted areas and zero-emission zones.

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Parallel Hybrid

Diesel + Electric Motor With Energy Storage

This parallel hybrid system uses standard Twin Disc propulsion control. It’s best suited for vessels with long waits between jobs, high percentage of slow speed operation, and operating in restricted areas and zero emission zones. Twin Disc technology enables implementation into any standard QuickShift® marine transmission.
Overview
  • Parallel hybrid using diesel and electric power
  • During low-power operation, the e-motor uses excess diesel power to generate electricity
  • In high-demand phases, electric power can boost diesel power
Transmission
  • Based on standard marine transmission, with same footprint and selection criteria and proven worldwide support
  • No trailing pump needed; transmission is lubricated as diesel or e-motor drives it
  • Efficient design minimizes losses
MasterClutch™
  • Provides power generation through PTO/PTI in forward, neutral, and reverse
  • Prevents engine back-driving during electric-only operation
  • Allows all features of QuickShift® transmission
PTI Gearbox
  • Drives transmission primary shaft (same as engine) with MasterClutch™ providing disconnect
  • Allows for standard speed/smaller e-motor through motor speed reduction
  • Offset to propeller shaft enables installation of large motors
  • Reductions from 1.0:1 to 2.5:1
  • Integrated sea water pump cools transmission during electric propulsion
  • PTO available for onboard hydraulics (e.g., steering pump)

Diesel + Dual Electric Motors with Energy Storage

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Twin Disc supports you with complete hybrid systems as well as specific components. Our specialists work with your technical experts to determine the optimal configuration and components. Talk to us today about moving forward to a better system, and a better bottom line.

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