Compound Turbocharging Vs Hlava Sequential Turbo Manifold

Sequential Turbo Manifold Advantage in Compound Turbocharging

Compound Turbocharging involves the integration of two turbochargers in a sequence of compressed air from a larger low-pressure turbocharger leading to the small high-pressure turbocharger that then multiplies that pressure even further which can create high levels of boost but also extreme high charge temperatures which will then be introduced to an already very hot engine that can lead to an unpredictable combustion process and reliability concerns. One of the expressed “benefits” in compound turbocharging systems is the high levels of boost that are created. The problem with this is that even though the pressure is higher, the air, as previously stated, is much hotter which means the air has less usable energy, making that high level of boost pressure far less effective. Cooler intake temperatures lead to more effectively efficient power being delivered, as cooler air provides more usable energy, leading to a more stable and complete combustion process. This means that with colder air temperatures, more power can be generated per pound of boost relative to hotter intake temperatures. The Hlava Sequential Turbo Manifold allows both turbochargers to be utilized at efficient points in their compressor maps and deliver highly effective boost as the turbochargers are only controlled by exhaust gas flow, which allows them to deliver boost with unusually low intake temperatures. Lower than any other traditional form of turbocharging, let alone compounds, which means the boost carries more usable energy in the air.

            Despite the utilization of a smaller turbocharger with a larger one, achieving seamless coordination between two turbochargers of varying sizes can be challenging with current compound turbocharging. Compound systems are restricted by their poor fluidity often times, leading to the high-pressure turbocharger being pushed beyond its designed limits which leads to even higher intake temperatures than what you would already see in the charge system.  The fluidity of the HST manifold is far superior than that of compound systems. Which means the intake can sustain a much lower temperature, leading to a more effectively efficient boost delivery.  

           Because of the lack in fluidity of compound turbocharging system, the sequence from one turbocharger to another does not offer a much larger range of effective boost in the RPM band. More than some forms of turbocharging? Yes, but not even close to the largest range. The Hlava Sequential Turbo Manifold allows the application of a very small frame turbocharger that will activate very early in the RPM band that would bring you up to the secondary larger turbochargers effective range. This then gives you an interlapping range of effective boost on the largest range of an RPM band ever seen by any forced induction system.

        Tuning a compound turbocharged system requires intricate adjustments to both turbochargers. With the use of a compound turbocharging setup, much of the exhaust gas is wasted. Adding further complexity to the tuning process and potentially requiring specialized expertise will add a lot of extra cost to make it function properly. When it comes to tuning, the Hlava Sequential Turbo Manifold is a much, MUCH easier process. Tuning can be cut down to be as simple as ignition and fuel map adjustments as the turbochargers are not forced to hit a target boost level, leaving out the tuning that would further need to be done in order to force the system to create a specified boost level. This also can aid in cutting down on overall costs as no part of the system will be working harder than designed, giving the components in both the engine and the turbocharging system a much better chance of lasting longer. However, if you would like to set a target boost level, the necessary components may be added to the apparatus without voiding the benefits of utilizing the Hlava Sequential Turbo Manifold.

          When deciding to utilize forced induction, there are multiple things to consider when you want optimal performance efficiently. In the face of these considerations, the Hlava Sequential-Turbo Manifold emerges as a groundbreaking solution that combines the best of both worlds – a near instantaneous response, consistent performance, and efficiency – without the complications associated with compound turbocharging.  As the automotive landscape continues to evolve, the HST manifold represents a revolutionary leap towards a more accessible, versatile, and high-performance forced induction experience.

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