/ 125 BOOST AIR CONDITIONING AVL ConsysBoost The boost air conditioning system AVL ConsysBoost conditions the boost air temperature to a pre-definable value and keeps it within a tight tolerance range mainly for steady state applications, or at least those with constant demand values. The boost air from the turbo charger is indirectly conditioned by controlling the cooling water flow on the secondary side of the heat exchanger. CONTROL PRINCIPLE The boost air temperature control is indirectly performed by controlling the cooling water flow through the heat exchanger. A circulation pump ensures an adequate flow of cooling water in the heat exchanger even for low power applications. In addition, this pump improves control behavior by sending the heated cooling water return flow to the heat exchanger inlet. For simulating the pressure drop of different engine intercoolers, a manually operated valve is installed between the AVL ConsysBoost and the engine intake duct. APPLICATION The standard ConsysBoost 1,200 or 3,000 units are basically designed for stable temperature control during a steady state or dynamic engine operation. Alternative solutions, such as spray variants, are available for following a dynamic temperature profile. BENEFITS AT GLANCE • The precise adherence to a pre-defined boost air temperature significantly improves the reproducibility of measurements on turbo-charged combustion engines and, therefore, increases the testbed efficiency • The ability to simulate different pressure losses for different vehicle intercoolers allows use on a wide range of engines • The compact and mobile unit can be moved to different testbeds, saving investment costs by eliminating the need for extra units • Space-saving installation close to the engine by separating the conditioning part from the heat exchanger The AVL ConsysBoost is installed in the test room, close to the engine for a fast response time and good control stability. To save space around the engine, the intercooler and stand can easily be removed from the conditioning unit and located separately, close to the engine.
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