摘要 |
A METHOD OF REMOVING DEPOSITS FROM A DIESEL ENGINE, THE METHOD COMPRISING COMBUSTING IN THE ENGINE A DIESEL FUEL COMPOSITION COMPRISING AN ENGINE CLEANING ADDITIVE, WHEREIN THE ENGINE CLEANING ADDITIVE IS THE PRODUCT OF A MANNICH REACTION BETWEEN: (A) AN ALDEHYDE; (B) AMMONIA, HYDRAZINE OR AN AMINE; AND (C) AN OPTIONALLY SUBSTITUTED PHENOL; WHEREIN THE OR EACH SUBSTITUENT OF THE PHENOL COMPONENT (C) HAS AN AVERAGE MOLECULAR WEIGHT OF LESS THAN 400. (FIGURE 1) |