Cold Start Investigation

A difficult situation concerning emissions, but also that of heat availability in the passenger compartment, are represented by the cold start and the warmup from low negative temperatures.


The FKFS equipped an engine test bench with a cold chamber to measure and optimize these operating states. The test sample can be conditioned to a starting temperature of down to -23 °C. A dynamic dynamometric brake enables the simulation of any startup, starting and driving profiles. While intake air and ambient air are maintained at the desired ambient conditions, only that amount of heat is drawn from the coolant via the heat exchanger that is necessary for a predefined realistic warmup of the engine.


The goal of this method is the development of warmup strategies and the optimization of safety and comfort with increasingly more efficient engines.

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