Studies pertaining to hydrogen car development. Part B. A comparative study of engine performance with gasoline and hydrogen. Part C. Hydrogen storage and flow system

A comparative study of the performance of an engine operating on gasoline and on hydrogen is presented. Results indicate thermal efficiencies of from 25 to 100% greater with hydrogen than with gasoline. The emission of nitrogen oxides was reduced approximately 90% when operating on hydrogen. With quality-governed, hydrogen operation, however, maximum power output is reduced by as much as 50%; with water injection, the figure might be 30%. The problem of the storage of hydrogen is addressed. In particular, metal hydride and liquid systems are compared. A liquid hydrogen system was developed and installed in a 1973 Jeep, and details of the system are presented. The system was found to be basically feasible, and operating experience thus far is favorable.