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)
