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Surbo System's Energy Analysis For Turbo Diesel Engines

Here is a study of what happens when the Surbo acts on a turbodiesel-engined vehicle. It explains why the Surbo can bring the engine to its rpm red line with just 1/2 accelerator pressure, when most turbodiesel vehicles need full accelerator pressure for the same. The reasons are the Surbo's vortex suction, the resultant air pressure accumulation, better air scavenging through the Surbo Sytem's components (in {}), and therefore higher velocity of exhaust gases which drive the turbocharger's turbine harder and from a lower rpm. You may also read the related page How Surbo Works For Diesels for easier understanding.

Diagram below shows the air pressure accumulation within the Surbo system as the Surbo is activated through Stages 1 to 3.

This diagram shows the air flow through a Surbo-assisted diesel engine

where P1 is the initial inlet vacuum, P2 is the Surbo's pressure setting, and P3 is the back pressure formed by the temporarily decreased acceleration.

Stages/ {Surbo System Component} {Surbo (red), presses air into grey pipe} {Oil chamber, in orange} {Governer, controlled by accelerator, in white box} {Intake manifold, in light grey} {Engine, bottom block in pink} {Exhaust, no colour. Exhaust gases flow around turbocharger, spinning it so that it compresses air}
initial acceleration (Stage 1) air flows straight through is pressed to inject diesel for acceleration normal absolute pressure is sole energy source
pressure accumulation (Stage 2) begins to cross-jet and form vortex fills up with engine back pressure is held still for 1 second to reduce engine acceleration, to generate a back pressure towards the Surbo fills up with engine back pressure cylinder pressure increases due to lessened acceleration but air still rushing in exhaust back pressure increases, ready to blast air out. Turbocharger picks up speed due to exhaust pressure
vortex (Stage 3) spins air at full speed acts as air pressure accumulator is pressed slightly more and varied slightly around half way point half accelerator pressure means half as much diesel injected higher cylinder compression because of moderately increased air pressure blasts air out instantly because exhaust already under full back pressure. Turbocharger spins faster than usual, for increased boost.
scavenging: pulling gases through (Stage 3 and afterwards) vortex's suction pulls air in harder than before half accelerator pressure prevents over-fueling and smoke higher air density imparts more force to air to overcome flow friction losses abundance of air to completely burn the diesel injected higher mass flow to push through exhaust and spinning turbocharger harder than before

Read the similar study for petrol vehicles.

Related pages:

  • List of diesel vehicles fitted with Surbo
  • How Surbo works for diesel vehicles
  • How to increase engine power for diesel vehicles
  • Surbo system's energy analysis for diesel engines
  • How Surbo transforms your car:

    Benefits using Surbo

    10% fuel saving with mixed driving and more on highways

    Faster acceleration, especially from standstill for automatic cars

    Higher top speed, which means easier cruising

    Higher RPM capability, rev limit possible with just 1/2 throttle!

    Instant automatic gear kickdown

    Safer, more confident overtaking

    Better hill climbing power

    Less diesel smoke, even with more speed

    Reduced CO2 emissions from vehicles

    Money saved, more than from fuel savings

    Transferability. Use your Surbo on your next car

    Lifetime warranty on both the Surbo and installation

    Technical Details

    What is Surbo?

    The Twin Surbo, 2 Surbos in series for even more low rpm torque

    Surbo versus other engine accessories and parts

    When the Surbo is most useful

    Dynamometer Test Results

    How Surbo increases engine compression at low rpm and prevents excessive compression at high rpm

    How Surbo increases engine efficiency

    How Surbo prevents harmful engine knocking

    How Surbo may help your engine so it can last longer

    FAQ: Frequently asked questions

    How Surbo works for diesel engines

    How Surbo's increased air density enhances diesel technology, and raises peak RPM

    Diagram: Surbo's effect on the whole vehicle

    Diagram: Surbo on petrol turbocharged engines

    Diagram: Surbo on diesel engines

    Diagram: Surbo on turbo diesel engines

    Vehicles using Surbo

    Some vehicles recommended for Surbo

    Automatic cars fitted with Surbo

    Manual cars fitted with Surbo

    Surbo5 for larger engines

    Petrol turbo cars fitted with Surbo

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