IPC 7 English version F02P-F02P 23/04

F02P-F02P02304

SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F 02

COMBUSTION ENGINES (cyclically operating valves therefor, lubricating, exhausting, or silencing engines F01); HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

F 02 P

IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES (specially adapted for rotary-piston or oscillating-piston engines F02B 53/12; ignition of combustion apparatus in general, glowing plugs F23Q; measuring of physical variables in general G01; controlling in general G05; data processing in general G06; electrical components in general, see section H; sparking plugs H01T)

Subclass Index

ELECTRIC SPARK IGNITION

Directly from generator; other installations

F02P 1/00; F02P 3/00

Sparking plugs structurally combined with engine parts

F02P 13/00

Control: timing, distributing; other

F02P 5/00, F02P 7/00; F02P 9/00

Safety means

F02P 11/00

Other features

F02P 15/00

Testing

F02P 17/00

IGNITION OTHERWISE THAN BY ELECTRIC SPARK: BY INCANDESCENCE; BY DIRECT FLAME; BY OTHER MEANS

F02P 19/00; F02P 21/00; F02P 23/00

Electric spark ignition installations characterised by the type of ignition power generation or storage

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

the generator being specially adapted for use with specific engine types, e.g. engines with V-arrangement of cylinders

Generator drives, e.g. having snap couplings

Layout of circuits

Other installations

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 15/10) [4]

having inductive energy storage, e.g. arrangements of induction coils

Layout of circuits

045

for control of the dwell or anti-dwell time [4]

for control of the magnitude of the current in the ignition coil (during starting F02P 15/12) [4]

055

with protective means to prevent damage to the circuit or the ignition coil [4]

having capacitive energy storage (piezo-electric or electrostatic ignition F02P 3/12)

Layout of circuits (for low tension F02P 3/10)

for control of the charging current in the capacitor (F02P 15/12 takes precedence) [4]

Low-tension installation, e.g. using surface-discharge sparking plugs

Piezo-electric ignition; Electrostatic ignition

Advancing or retarding electric ignition spark; Arrangements of distributors or of circuit-makers or -breakers for electric spark ignition; Electric spark ignition control or safety means, not otherwise provided for

Advancing or retarding ignition; Control therefor [6]

non-automatically; dependent on position of personal controls of engine, e.g. throttle position

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)

using mechanical means [4]

dependent on engine speed [4]

Centrifugal timing mechanisms [6]

dependent on fluid pressure in engine, e.g. combustion-air pressure [4]

dependent on a specific pressure other than that of combustion-air, e.g. of exhaust, cooling fluid, lubricant [4]

dependent on specific conditions other than engine speed or engine fluid pressure, e.g. temperature [4]

145

using electrical means [4]

Digital data processing [4]

152

dependent on pinking (detecting or indicating knocks in internal-combustion engines G01L 23/22) [6]

153

dependent on combustion pressure [6]

155

Analogue data processing [4]

characterised by the mechanical transmission between sensing elements or personal controls and final actuating elements

Arrangement of distributors, circuit-makers or -breakers, or pick-up devices (advancing or retarding ignition or control therefor F02P 5/00; such devices per se, see the relevant classes of section H, e.g. rotary switches H01H 19/00, contact-breakers, distributors H01R 39/00, generators H02K)

of distributors

with electrical means (ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders F02P 15/08) [4]

having distributors with air-tight casing

of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle [4]

063

Mechanical pick-up devices, circuit-makers or -breakers, e.g. contact-breakers [4]

067

Electromagnetic pick-up devices [4]

Hall-effect pick-up devices [4]

073

Optical pick-up devices [4]

077

Circuits therefor, e.g. pulse generators [4]

having air-tight casings

Drives of distributors or of circuit-makers or -breakers

Electric spark ignition control, not otherwise provided for

11/

Safety means for electric spark ignition, not otherwise provided for

11/

Preventing damage to engines or engine-driven gearing

11/

Preventing unauthorised use of engines (of vehicles B60R 25/04; ignition locks H01H 27/00)

11/

Indicating unsafe conditions

13/

Sparking plugs structurally combined with other parts of internal-combustion engines (with fuel injectors F02M 57/06; predominant aspects of the parts, see the relevant subclasses)

15/

Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P 1/00 to F02P 13/00

15/

Arrangements having two or more sparking plugs

15/

one of the spark electrodes being mounted on the engine working piston

15/

the electric spark triggered by engine working cylinder compression

15/

having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders

15/

having continuous electric sparks

15/

having means for strengthening spark during starting

17/

Testing of ignition installations, e.g. in combination with adjusting (testing fuel injection apparatus F02M 65/00; testing ignition installations in general F23Q 23/00); Testing of ignition timing in compression-ignition engines [4]

17/

Checking or adjusting ignition timing [6]

17/

dynamically [6]

17/

using a stroboscopic lamp [6]

17/

using a cathode-ray oscilloscope (F02P 17/06 takes precedence) [6]

17/

Measuring dwell or antidwell time [6]

17/

Testing characteristics of the spark, ignition voltage or current (testing of sparking plugs G01M 19/02) [6]

Other ignition

19/

Incandescent ignition, e.g. during starting of internal-combustion engines; Combination of incandescent and spark ignition [4]

19/

electric, e.g. layout of circuits of apparatus having glowing plugs

19/

non-electric, e.g. heating incandescent spots by burners (use of burners for direct ignition F02P 21/00)

21/

Direct use of flames or burners for ignition

21/

the flames being kept burning essentially external to engine working chambers

21/

Burning-cartridges or like inserts being arranged in engine working chambers (as starting aid F02N 17/02)

23/

Other ignition

23/

Friction, pyrophoric, or catalytic ignition

23/

Other physical ignition means, e.g. using laser rays