| 1/00 | Installations having electric ignition energy generated by magneto- or dynamo-electric generators without subsequent storage |
| 1/02 | Installations having electric ignition energy generated by magneto- or dynamo-electric generators without subsequent storage the generator rotor being characterised by forming part of the engine flywheel |
| 1/04 | Installations having electric ignition energy generated by magneto- or dynamo-electric generators without subsequent storage the generator being specially adapted for use with specific engine types, e.g. engines with V-arrangement of cylinders |
| 1/06 | Installations having electric ignition energy generated by magneto- or dynamo-electric generators without subsequent storage Generator drives, e.g. having snap couplings |
| 1/08 | Installations having electric ignition energy generated by magneto- or dynamo-electric generators without subsequent storage Layout of circuits |
| 3/00 | Other electric spark ignition installations characterised by the type of ignition power generation storage |
| 3/01 | Other electric spark ignition installations characterised by the type of ignition power generation storage Electric spark ignition installations without subsequent energy storage, i.e. energy supplied by an electrical oscillator (with magneto- or dynamo-electric generators F02P 1/00; piezo-electric ignition F02P 3/12; with continuous electric spark F02P 15/1) |
| 3/02 | Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils |
| 3/04 | Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils Layout of circuits |
| 3/045 | Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils Layout of circuits for control of the dwell or anti-dwell time |
| 3/05 | Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils Layout of circuits for control of the magnitude of the current in the ignition coil (during starting F02P 15/12) |
| 3/055 | Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils Layout of circuits with protective means to prevent damage to the circuit or the ignition coil |
| 3/06 | Other electric spark ignition installations characterised by the type of ignition power generation storage having capacitive energy storage (piezo-electric or electrostatic ignition F02P 3/12) |
| 3/08 | Other electric spark ignition installations characterised by the type of ignition power generation storage having capacitive energy storage (piezo-electric or electrostatic ignition F02P 3/12) Layout of circuits (for low tension F02P 3/1) |
| 3/09 | Other electric spark ignition installations characterised by the type of ignition power generation storage having capacitive energy storage (piezo-electric or electrostatic ignition F02P 3/12) Layout of circuits (for low tension F02P 3/1) for control of the charging current in the capacitor (F02P 15/12 takes precedence) |
| 3/10 | Other electric spark ignition installations characterised by the type of ignition power generation storage having capacitive energy storage (piezo-electric or electrostatic ignition F02P 3/12) Low-tension installation, e.g. using surface-discharge sparking plugs |
| 3/12 | Other electric spark ignition installations characterised by the type of ignition power generation storage Piezo-electric ignition; Electrostatic ignition |
| 5/00 | Advancing or retarding electric ignition spark; Control therefor |
| 5/02 | Advancing or retarding electric ignition spark; Control therefor non-automatically; dependent on position of personal controls of engine, e.g. throttle position |
| 5/04 | Advancing or retarding electric ignition spark; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions (dependent on position of personal controls of engine F02P 5/02) |