Two-Stage Parallel Turbos for Diesel Engines
In our Two-Stage parallel systems, two turbos work in sequence, delivering significant gains in power and torque in engines typically 2.0L or bigger.
Balancing power & efficiency at every speed
Our Two-Stage parallel turbo for diesel engines was an industry first when we released it in 2006. Since then, it’s increasingly in-demand among auto manufacturers seeking enhanced performance, fuel efficiency, and emissions control. Our Two-Stage parallel turbos for diesel engines are available for engines typically 2.0L or bigger.
Two-Stage Parallel Turbos for Diesel Engines Benefits
Our Two-Stage parallel turbo for diesel engines offers superior performance within a compact design. Benefits include:
Two-Stage Parallel Turbochargers for Diesel Engines
Key Features
In our Two-Stage parallel system, two turbos work in sequence to improve engine performance. Our high-temperature, high-durability turbine control valve is designed to ensure rapid transition between the different modes of turbo operation.
From ignition to 2400 rpm:
- The primary turbo activates (vanes vary from fully closed to almost fully open)
- The turbine valve and the compressor discharge valve remain closed
- The compressor recirculation valve stays open
From 2400 rpm to 2800 rpm:
- The secondary turbo activates (vanes close slightly during transition, then open again)
- The turbine valve begins to open
- The compressor discharge valve opens
Beyond 2800 rpm:
- Both turbos are in full sequential mode (vanes are fully open)
- The turbine valve stays open
- The compressor discharge valve is open
Ultra-Efficient Clean Diesel Platforms Can Benefit Greatly from Garrett’s Downsized, High-Temperature VNT Boosting Technology
Garrett’s sixth generation variable geometry turbo architecture (VNT) is helping auto manufacturers harness the performance potential of higher temperature diesel powertrains.
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