Two-Stage Parallel Turbochargers for Diesel Engines

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

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Two-Stage Parallel Turbos for Diesel Engines

Balancing power & efficiency at every speed

Two-Stage Parallel Turbos for Diesel Engines Benefits

Improved vehicle acceleration, torque and power

Superior transient behavior

Reduced fuel consumption

Lowered a fter-treatment complexity and cost

Low thermal inertia