Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
  • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
  • F02P7/02—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors
  • F02P7/021—Mechanical distributors
  • F02P7/025—Mechanical distributors with noise suppression means specially adapted for the distributor

Definitions

• This invention is based on connecting a coil that is wound around a core facing a signal rotor to a capacitor that constitutes a resonance circuit, and is used to detect changes in the oscillation state.
• This relates to an internal combustion engine ignition device that performs ignition timing detection more. Background technology
• (1) is a signal generator mounted inside the distributor (not shown), which rotates synchronously with the internal combustion engine (not shown).
• ( 2 ) is an electronic circuit section provided separately from the signal generating section.
• a capacitor (2a), which forms a resonance circuit together with the coil (lc), is an electronic circuit section.
• the signal rotor (la) rotates in synchronization with the rotation of the internal combustion engine (not shown) and the core (lb) fixed opposite to the signal rotor (la).
• the metal part of the signal port (la) change as shown in Fig. 2 (a).
• a coil (lc) is wound around the core (lb), and a capacitor () is connected to the coil (lc) to form a resonance circuit. Yes.
• This resonant circuit is filled with oscillation energy from the oscillation energy supply circuit (2b), and in the state without metal opposition shown in Fig. 2 (a),
• the resonance circuit has an amplitude that balances the loss of the resonance circuit with the supply energy of the oscillation energy supply circuit (2b), and the resonance circuit corresponds to the corresponding part in FIG. 2 (b).
• Oscillation waveforms are shown, and when there is metal opposition, there is metal in the magnetic path of the magnetic flux generated by the core (lc), so the loss in the metal (mostly Current loss and hysteresis loss), the oscillation is weakened, and eventually the oscillation stops.
• the oscillation waveform exhibits a change shown in FIG. 2 (b).
• the oscillation detection circuit (2c) always receives the oscillation waveform shown in Fig. 2 (b), and the oscillation amplitude is larger than the comparison voltage shown in Fig. 2 (b).
• an output signal is generated as shown in Fig. 2 (c).
• This output signal is amplified by the amplifier circuit (M).
• the water transistor () is driven, and as a result, the current shown in Fig. 2 (d) flows through the primary winding (Sa) of the ignition coil (3), and the current shown in Fig. 2 (d) flows.
• a high voltage pulse shown in Fig. 2 (e) is generated, and the voltage is boosted in the secondary winding () to obtain a high voltage ignition pulse.
• the signal generation unit (1) and the electronic circuit unit ( 2 ) are connected with a sufficient length of lead wire. Since the oscillation waveform shown in Fig. 2 (b) is a high frequency wave in order to speed up the response, unnecessary radio waves from the lead wire are required. Or the high voltage ignition pulse may induce malfunctions due to the induction of the lead wire, or reduce the reliability of the connection. Disclosure of an invention that had disadvantages
• This invention can be used during assembly by embedding the coil lead wire into the groove of the frame when embodying. Failure such as breakage of the lead wire can be prevented, and furthermore, the frame has a terminal plate, and the lead wire of the coil is connected through this terminal. In addition, it is possible to provide a highly reliable and inexpensive internal engine ignition device having extremely high productivity.
• FIG. 1 is a block diagram showing a conventional internal combustion engine ignition device
• FIG. 2 is a waveform diagram showing the operation waveform
• FIG. 3 is an embodiment of the invention.
• FIG. 4 is a cross-sectional view showing a cross section taken along line I-I in FIG. 3
• FIG. 5 is a cross-sectional view showing a cross section taken along a line i-1S in FIG.
• FIG. 6 is a cross-sectional view taken along the line I--I of FIG. 6, and FIG. 6 is a cross-sectional view taken along line I--I of FIG.
• (lb) is the core on which the coil (lc) is wound, and (2) is the heat.
• An electronic circuit section mounted on a sink (3), (5) is a frame that forms a casing together with the heat sink (10).
• the operation is the same as that of the conventional example, but the coil (lc) is integrated with the electronic circuit section ( 2 ) in the casing. Since the lead wire of the coil (lc) is extremely short-circuited, it is possible to almost completely eliminate the radiation of unnecessary waves from the lead wire. At the same time, malfunction due to induction of a high-voltage ignition pulse can be prevented, and the reliability of the connection can be improved.
• (5b) is for manufacturing frame (5) by injection molding, etc. Since it is installed in the same direction as the splitting direction of the mold, it has the feature that it can be carried out extremely easily without any special processing. You.
• the frame ( 5 ) has terminal boards (Sa) and (6b), and the lead wire of the coil (lc) is connected to these terminals ⁇ () and (6b) respectively.
• the core (lb) and the coil (lc) are inserted into the frame ( 5 ), and the lead wire is connected during transportation after assembly. There is no need to worry about damage, etc., and when connecting the middle leads (7a) and (7b), the position force of terminals ⁇ (6a) and (6b) must be fixed> Extremely high productivity can be achieved, for example, because positioning is easy.
• the core (lb) and coil (lc) can be inserted into the frame (5) and fixed by means of potting after assembly.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Ignition Installations For Internal Combustion Engines (AREA)
• Electrical Control Of Ignition Timing (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=14757843

Family Applications (1)

Country Status (5)

Families Citing this family (1)

Citations (1)

Family Cites Families (11)

• 1981
  • 1981-08-10 JP JP1981119294U patent/JPS5824473U/ja active Pending
• 1982
  • 1982-08-10 EP EP82902382A patent/EP0085113B1/en not_active Expired
  • 1982-08-10 DE DE19823277634 patent/DE3277634D1/de not_active Expired
  • 1982-08-10 US US06/486,277 patent/US4516557A/en not_active Expired - Lifetime
  • 1982-08-10 WO PCT/JP1982/000313 patent/WO1983000537A1/ja active IP Right Grant

Patent Citations (1)

Also Published As

Similar Documents

Legal Events