Biofuel-fuel system compatibility aspects and engine related evaluation

Lead partner: Neste

Objectives

  1. Renewable diesel composition and a comprehensive report on the fuel’s:
    • Stability
    • Compatibility with the existing infrastructure
    • Compatibility with the existing engine technology
    • Efficiency improvements which can be derived in future engines
    • Benefits during the combustion
    • Possible interactions with the engine oil
    • The report will also contain suggestions on blending and additivation strategies to both ensure the fuel’s operability and maximise its projected benefits
  2. An assessment of the test bench for the task at hand, specifically:
    • The testing time for the “fit for purpose” test will be reduced from 3000h to less than 500 h
    • The fuel requirement per “fit for purpose test” will be less than 100 l (compared to multiple 1,000 l in full engine test)
    • Testing of 4 fuels in parallel (therefore under exact same ambient conditions)
  3. The compatibility of 10-15 (depending on availability) Fuel blends in the longterm use in injection equipment

  1. Report on spray and combustion behavior on new alcohol blended fuels [RWTH – Nov 2019]
    The report summarizes the results of optical, high-pressure chamber investigations and evaluates spray and combustion characteristics of the new fuels.
  2. Report on integration of high pressure chamber investigations into CFD code [RWTH – Sep 2020]
    The report incorporates the findings of the experimental investigations into a validated 3D-CFD model that is subsequently used for the optimization of the combustion system.
  3. Fuel composition report [NESTE – Mar 2020]
    Fuel composition report will include fuel analyses of the products from hydro formulation and suitable compositions of the produced fuel mixed with EN590.
  4. Fuel component interaction (results) [T4F – Mar 2020]
    Based on the results of the Hardware-in-the-Loop test (testing of fuel in the injection system(s)), and in consideration of input from the other workpackages, an assessment of fuel/component compatibility and/or incompatibility identified by then will be written in this report. This also includes the compatibility of aged fuel, since the fuel is stressed in the course of testing. The report also contains the relevant data leading to the assessment, e.g. measured data, photographs etc. If applicable, there will be a confidential (full) report and a public report, with the later one being stripped of confidential information.
  5. Report on combustion system optimization for alcohol blend fuels [RWTH – Sept 2020]
    The report uses 3D-CFD simulations to optimize the combustion system for the new fuels targeting for high efficiency and low pollutant emissions.
  6. Report on efficiency and emission optimization potential by using fuel sensing/alcohol detection [FEV – Dec 2020]
    Results of possible optimization of engine emission and fuel consumption if the engine settings (calibration) can be adapted to the fuel inside the tank. In this case it is assume that the fuel properties can be detected by the ECU.
  7. Report on emission and efficiency impact on existing engines [FEV – Mar 2021]
    Results of testing the engine in its unchanged condition using the possible new fuel mixtures to show which potential the fuel alone can offer and which fuel mixture is most beneficial to state of the art engines.
  8. Report on efficiency optimization potential for future engines [FEV – May 2021]
    Results of the optimization process if the engine would be purely optimized for the new proposed fuel only. This includes hardware changes which might make the use of standard Diesel fuel worse, but increase emission and fuel efficiency for the newly designed fuel.
  9. Report on vehicle and fleet simulation of efficiency and emission impact in future engines [FEV – Jul 2021]
    Simulation of heavy duty fleets and their road profile encooporating the results from the engine bench and vehicle tests to predict the emission impact on different vehicles and load cycles coming from the new fuel.
  10. Report on emission impact on existing vehicles and the fleet under real driving conditions [FEV – Jul 2020]
    Results of emission testing with the truck with baseline engine set-up and calibration, just using the new fuel to illustrate the impact of the new fuel on existing fleets.
  11. Initial and final lubricant interaction report [OWI – Sept 2021]
    Related mainly to task 3.2.3 where different fuels, fuel blends and lubricants are contaminated with each other with various concentrations in order to monitor the impacts on the chemical-physical properties of the fuel or lubricant.
  12. Final component interaction results report [T4F – Sept 2021]
    Based on the results of the Hardware-in-the-Loop test (testing of fuel in the injection system(s)), and in consideration of input from the other workpackages, an assessment of fuel/component compatibility and/or incompatibility identified by then will be written in this report. This “final” report also contains the findings from the report after 18 Months. This also includes the compatibility of aged fuel, since the fuel is stressed in the course of testing. The report also contains the relevant data leading to the assessment, e.g. measured data, photographs etc. If applicable, there will be a confidential (full) report and a public report, with the later one being stripped of confidential information.
  13. Report on infrastructural adaptations for renewable fuels [OWI – Sept 2021]
    Based on the input of the subtasks of Task 3.2 an assessment is being performed for distributing companies, end users and (local) authorities to identify infrastructure which needs to be adapted for REDIFUEL. The outcome will be a clear report/brochure/leaflet explaining the characteristics, advantages, do’s and don’t’s in order to inform potential users.