| 123 / | HD | INTERNAL-COMBUSTION ENGINES |
|
| 319 | DF | ENGINE SPEED REGULATOR {16} |
| 339.1 | DF | .~ Idle speed control {5} |
| 339.14 |  | .~.~ Electrically operated control means {6} |
| 339.15 | DF | .~.~.~> With fail-safe, backup, or malfunction detecting means |
| 339.16 | DF | .~.~.~> External load condition responsive {2} |
| 339.19 | DF | .~.~.~> By engine speed error feedback {4} |
| 339.24 | DF | .~.~.~> Temperature responsive |
| 339.25 | DF | .~.~.~> Including rotary actuator {1} |
| 339.27 | DF | .~.~.~> Including linear reciprocating solenoid control device {1} |