High-quality fuels are the lifeblood of today’s diesel engines. The purity and quality of the diesel can be guaranteed by measuring the density and viscosity – so that increasingly powerful engines can meet the increasingly strict emission standards.
In the nineteenth century Rudolf Diesel worked on a procedure to burn an injected fuel via self-ignition. After numerous attempts and different models, the first diesel engine was produced in 1893. Rudolf Diesel had the idea to operate his engines with vegetable oils as well as mineral oils. At the World Exhibition in Paris in 1900, for example, a diesel engine was operated on peanut oil. The diesel engine was continuously developed and in 1924 was built into mass-produced commercial vehicles for the first time.
Quality guarantees power
Some 125 years later diesel engines are in use in many different fields: in motor sports, railway vehicles, generators, watercraft, airplanes and, of course, in the automobile industry. Besides biodiesel (from renewable resources) “diesel fuel” from mineral oil has prevailed as the fuel for diesel engines.
Today diesel engines are true power stations which extract more and more power from less cubic capacity for end customers. So that the engines can master these and future challenges it is essential to optimize the lubricating ability, flowability and efficiency of the fuel. Why?
The operation of today’s diesel engines is based on a sophisticated engine technology. In order to achieve the optimal point in time for the explosion, the injection nozzles spray the fuel within a fraction of a second. If the explosion occurs too early, the piston is pressed downwards too soon. This can cause damage to the engine. If the fuel ignites too late, the piston loses a lot of energy and the engine delivers considerably less power. Insufficient injection behavior also greatly affects the formation of soot and the emission of nitrogen oxides. You could therefore say that the new engines have become true gourmets as regards fuel, similar to people who enjoy a fine red wine with an excellent evening meal.
Viscosity as the decisive parameter
What makes diesel fuel into a gourmet drink for engines? One of the most important parameters for the quality of fuel is the viscosity. Together with the density, this can give insight into the quality of diesel. The SVM™ 3001 Stabinger Viscometer™ from Anton Paar measures both parameters in one cycle. The viscometer also plays a decisive role in meeting the requirements of ASTM D7042, D4052, EN ISO 12185 and DIN EN 16896 for the certification of diesel fuels.
In sum, measuring the viscosity and density of diesel fuels has the following benefits:
- Consistent quality of the fuelSVM™ 3001 is listed in ASTM D975 – Standard Specification for Diesel Fuel Oils.
- Only one measuring cycle for both density and viscosity valuesAs SVM™ 3001 has both a viscosity and a density cell, the density measurement does not have to be carried out separately. This measuring cell combination covers the whole measuring range for viscosity, density and temperature. The measuring cells are filled in a single work step.
- Temperature scanDue to the automatic temperature table scan, SVM™ 3001 reliably measures the density and viscosity at +15°C and +40°C.
- API petroleum measurement tablesExtrapolation of the density value at the measured temperature to obtain the density value at the required temperature and calculation of the API gravity.
- Quick and efficientSVM™ 3001 requires a low sample volume of just 1.5 mL and provides quick analysis results.
- Easy operationThe sample is filled into the cells using a syringe and the measurement starts. The built-in FillingCheck™ automatically checks whether there are any air bubbles in the system. The large, configurable touchscreen (10.4”) shows several parameters at once. The intuitive precision widget shows the measuring accuracy and repeatability at a glance.
SVM™ 3001 stands out for its easy operation and functionality. With this viscometer from Anton Paar the quality and purity of diesel fuel is guaranteed.