THEORETICAL AND EXPERIMENTAL STUDIES OF HYDROGEN-FUEL HYBRID PROPULSION IN OTTO ENGINES

THEORETISCHE UND EXPERIMENTELLE UNTERSUCHUNGEN UEBER WASSERSTOFF-BENZIN-HYBRIDBETRIEB BEI OTTOMOTOREN

Recent research works on combustion engines are marked by the aim to reduce the toxic exhaust pollutions and as far as possible the fuel consumption. Regarding the energy situation increasing work is done to answer also the questions as for synthetic fuels. To meet all those requirements the operation of si-engines in the hydrogen/hydrocarbon-hybrid way seems to be useful. The main profit of this kind of operation is caused by the fact of a very poor lean-misfire-limit of a hydrogen-air mixture allowing good internal combustion even with equivalence-ratios of 0.14. Acceptable operation using similar values in stratified charge engines could not be realised till today. The advantage of this hybrid-operation compared to a pure hydrogen operation is based on the fact that there is only a small demand of hydrogen. This offers the possibility to store the hydrogen in the shape of metal-hydrides with no problems even today for a practical realisation. The basic hydrocarbon fuel is of course not fixed on gasoline. That gives the chance in using synthetic fuels too, like for instance methanol. Thermodynamical studies on the basis of the ideal otto-engine process including constant volume combustion a. Thermodynamical equilibrium show the increasing fuel economy in combination with a decreasing pollution as an effect of the hydrogen-hybrid system. The main results of these theoretical studies are presented. Experimental results attained by a 1-cylinder otto-engine are shown additionally, the engine was running in the idle position on pure hydrogen and equivalence ratios of approximately 0.14 without any throttling. The power control was done only by varying the amount of the additional gasoline. All the theoretical and the experimental results show correspondingly a noticeable decrease in toxic exhaust pollution and in fuel consumption. /Author/TRRL/

• Supplemental Notes:
  • This report was presented at the 16th International Automobile Technical Congress.
• Corporate Authors:

  International Federation of Auto Techniques Engs

  3 Avenue du President Wilson
  F 75116 Paris,   France 
• Authors:
  • May, H
  • Hattingen, U
  • Jordan, W
• Publication Date: 0

Language

• German

Media Info

• Pagination: 1 p.

Subject/Index Terms

• TRT Terms: Air; Air pollution; Air quality management; Combustion; Conferences; Energy; Exhaust gases; Fuel air mixtures; Fuel consumption; Fuels; Gasoline; Hydrocarbons; Hydrogen; Internal combustion engines; Motors; Stratified charge engines; Synthetic fuels; Traffic equivalence factor
• Uncontrolled Terms: Artificial; Cylinders; Hybrids
• ITRD Terms: 6714: Air; 9097: Artificial; 1394: Catalytic converter; 3860: Combustion; 8525: Conference; 2442: Emission; 3850: Fuel; 232: Fuel consumption; 7187: Hydrogen; 1334: Motor
• Subject Areas: Energy; Highways; Safety and Human Factors; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00163373
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: May 3 1978 12:00AM