PROFESSIONAL MOTORSPORT

SIMULATION SOFTWARE

Regulations provide opportunities to test engine model

The older technical regulations in several classes tried to limit the engine power in several ways. These different approaches provide interesting opportunities to check the accuracy of the engine simulation model and are discussed on this page.

Next to that, over the last 10 years we developed the engines of some Porsche youngtimers we ran on programmable Bosch Motorsport MS4. This enables us to closely compare the simulation results with reality.

Limited valve lift, test for poppet valve resistance model

The old WTCC regulations deliver a very special case to limit engine power. The regulations limited the maximum lift of the valves to 11 [mm]. In addition the maximum revs where limited to 8500 [rpm] and the compression ratio was limited to 11:1.

These regulations provide a very interesting opportunity to check the accuracy of the engine model, especially the poppet valve resistance.

Due to limited amount of air, test for combustion model

In the DTM the main limitation for the engine power was generated by air restrictor's.

Since this provides a clear limit to how much air enters the engine, this provides another very interesting opportunity to test and validate the accuracy of the combustion simulation.

Limited capacity causes test for overall performance

Due to the small capacity compared to rival V8's, the 996RSR engine ran unrestricted.

Although not all details are not known to us, we know it was a competitive engine and we know the power output of the rival engines. It is a challenge to match them due to the small capacity.

The extreme rpm test the assumptions within the model

The normally aspirated F1 engines as they were used from 2006 till 2011, propose an opportunity to test the model into an extreme direction.

The principle of these engines are the same as all other engines, just they are extremely pointed towards top end power. Big bore, very small stroke, very high revs. The rest similar like other engines.

Comparison with calibration data for development stages

The standard ECU was replaced with an Bosch Motorsport MS4 ECU running the Clubsport Software, in combination with a C40 logging device.

Using the simulation model, we step by step improved the 964 engine, which forms a very interesting feedback for the simulation model.

Comparison with calibration data for development stages

Another engine we ran and developed on a Bosch Motorsport MS4 ECU, in combination with a C40 logging device.

The Porsche 4 cylinder 968 engine appeals by its extreme big bore and the fact that is has variable camshaft timing. A very interesting engine to analyse and develop.