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On-Board System for the Analysis of Fuel Molecular Structure for Optimizing Combustion Processes
16 August 2007
SP3H, a French startup, is developing a smart on-board fuel sensor that analyzes the molecular structure of a fuel and transmits the information to the engine ECU to allow real-time optimization of injection, combustion and post-treatment for a wide range of liquid fuels.
The variability of existing fuels poses a problem for automakers as they try to minimize emissions and fuel consumption. Exacerbating this problem is the coming proliferation of new fuels (biofuels, synthetics) that create even more variability, combined with the push for new combustion modes that, while offering emissions and fuel consumption benefits, require even more exact combustion management.
SP3H uses an in-tank NIR sensor that is connected via optical fiber to an opto-electronic module outside the tank. The module analyzes the data and categorizes the composition of the fuel by hydrocarbon family and one of three weight categories (light, medium and heavy). From this matrix, it discriminates between fuel products using a 2D hydrocarbon profiler map.
The information about the composition of the fuel is then transmitted to the vehicle’s engine control unit (ECU). The ECU will then select instructions according to the fuel mapping and optimize the appropriate engine parameters.
The sensor is approximately two inches long and one inch wide; response time for the analysis is approximately one second. Start of production is in 2010. Alain Lunati, the president of SP3H, told the audience at the DEER 2007 conference that the company is already working with OEMs. The price of the system, he said, should be similar to that of an in-cylinder pressure sensor.
August 16, 2007 in Fuels, Vehicle Systems | Permalink | Comments (222) | TrackBack (0)
Comments
Posted by: Stan Peterson | August 16, 2007 at 11:58 AM
Stan,
This is basically a continuous measurement system. The reaction (automated adjustment or tuning part) is to come.
A continuously optimized ICE should perform better, consume and pollute less. It seems to be a win win solution if the cost is low enough.
Posted by: | August 17, 2007 at 08:08 AM
In countries that have strict fuel standards, there is no need for the additional expense of such a device. Flex-fuel vehicle might run better with them, but basically knock sensors and the lambda probe already provide enough information to characterize the essential characteristics of whatever mix of gasoline and E85 happens to be in the tank.
Posted by: Rafael Seidl | August 17, 2007 at 02:07 PM
I would not agree with this last comment. Even countries that have strict fuel standards have large variation in chemical quality of the fuel while still meeting the "standards".
Also just different temperature or weather conditions affects how the engine behaves. And even winning 2% of the pollution or the consumption thru continuous optimization seems a winning invention worth a reasonable price (think global warming & kyoto goals in Europe).
Way to go !
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A milestone in the world of computer games was reached Wednesday. Electronic Arts announced that it has sold 100 million copies of The Sims franchise, one of the most famous game brands in the world.
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