TUV approvements
TUV approvements |
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| For a bigger part of our offered power optimizations we are providing a TÜV-Expertise. These so-called prototype expertises are required to maintain the general operating license of the optimized car and certify that the car complies with the German legal requirements (StVZO) after the power optimization.German law requires that after the retrofitting the car insurance provider must be informed and that the car has to be demonstrated to a technical control office with regard to the modifications. Our prototype expertises prove and document all car specific features and modifications and thus facilitate the process. Car specific features are for example the exhaust emission characteristics, the engine power, the brake system, the maximum speed as well as other features.The TÜV office will document the homologation by issuing a certificate of homologation for the alterations effected. With this certificate of homologation, the car admission office can make the necessary entries in the car registration documents. In most cases, car insurance tariffs will remain unchanged, since they are not determined by performance but by classes. Please check this issue individually with your insurance company. | |||
| The creation of a TÜV Expertise – the exhaust lab | |||
| An expertise for car parts for the respective car has to be applied for individually with authorized organizations, such as TÜV or DEKRA. These independent institutions check, whether the relevant products comply with the legal requirements and certify a positive result by an Expertise. In case of a performance increase, the tests generally includes:-measurement of the performance achieved,-measurement of top speed,-measurement of the noise generated in stand and at a speed of 50 km/h,-measurement of the exhausts created in Eurozyklus-measurement of sooth diffusion (only Diesel) |
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| The first two measurements are determined at peak value; the other three values will be checked for compliance with the limit values. The compliance with the exhaust values according to European legislation is the biggest obstacle in creating an Expertise for parts. This can only be checked and certified in an exhaust lab. |
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| The exhaust lab is basically a dynamometer, simulating a trip in city traffic and an overland journey.According to the regulations, the test car has to be conditioned before the actual measurement.The car is fixed and secured on the dynamometer. |
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| A screen showing the speed to be driven is installed in front of the windscreen. A “distance” of appr. 7 km respectively 400 seconds is covered three times. This equals an overall driving distance of appr. 21 km. A maximum speed of 120 km/h is reached. In the top part of the screen, the speed is displayed by three graphs. The graph in the main section of the screen indicates the speed requested from the driver. |
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| At the top edge of the screen, the speed ramp is visible 3 times. In the diagram, at the lower edge of the scale the target speed is displayed and in the upside sections the speeds to be reached soon.In this graph the gear shift points are indicated. |
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| The car runs against a virtual charge equivalent to its own weight. This charge is realised by the frames at the rotating drums on which the car is set. In front of the car, a fan is simulating the air-stream and the necessary cooling air. Thus, a realistic street situation is simulated with the advantage of a reproducible and comparable test scenario – as requested by law. The conditioning is completed with the decelerating from the last speed ramp. It is meant to synchronize all engine conditions in order to achieve a comparable normal situation. After that, the car is moved into a climate-testing lab with a temperature of 20 degrees. The car must not be started anymore. After some hours, when all components and operating supply items have reached 20 degrees, the actual emission measurement can begin. |
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| According to 70/220/EWG, a defined speed profile will be run, following the same procedure as for the conditioning.In this process, after the cold start of the engine, an ordinary city traffic situation with a length of 195 seconds each is run through four times. This equals approx. 4 km. Then, in a second phase, an overland journey simulation is run. It takes 400 seconds / 7 km and equals one of the three conditioning tours. In the total approx. 1180 seconds / 11 km all emissions are sucked off by tubes mounted on the end tubes. |
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| They are disposed into a stream tunnel in order to filter out turbulences. |
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| At the end of the distance, the emissions are tested on particle concentration (only Diesel). |
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| Separated according to the two cycle-phases (city / overland) the particles are extracted on filter sheets. |
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| In a temperature and humidity controlled climate-testing laboratory, these filter sheets are weighed before and after the test. The weighing tolerance is less than a millionth of a gram. Even exhaust condensate or humidity from the compartment air would adulterate the results. |
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| Example of a Diesel-car without Diesel particulate filter (appr. 1-1,5 mg particle).A car with a compact soot particle filter system is in the range of some micrograms, i.e. nearly a thousandth. No discolouration would be visible. |
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| After that the gaseous portions are forwarded. They are directed along water separators in order to remove the condensate, conducted through Venturi pipes and collected in plastic bags. |
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| The collected gases are analysed when the test run is completed. |
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| Before each measuring, the test probes are calibrated with test gases. |
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| Then the gases are conducted on the sensors and the result of the measurement is calculated.When all measured values comply with the legal regulations, the expertise can be issued. |
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4920 Pontiac Lake Road USA- Waterford, Michigan 48328 |
Tel: +1 (0) 248-674-2770 ext: 228 Fax: +1 (0) 248-674-2778 http://www.steveseuropeanauto.com steve@steveseuropeanauto.com |
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