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High-energy ignition coil

An ignition coil and high-energy technology, which is applied in the direction of engine ignition, ignition controller, electric spark ignition controller, etc., can solve the problems of large ignition energy and failure to provide it, and achieve the effect of improving energy conversion efficiency

Active Publication Date: 2014-04-23
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing ignition coils cannot provide such a large ignition energy

Method used

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  • High-energy ignition coil
  • High-energy ignition coil
  • High-energy ignition coil

Examples

Experimental program
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Embodiment Construction

[0016] see Figure 1a and Figure 1b , the ignition energy value of the ignition coil Wherein T is the discharge time of the secondary coil 22 on the secondary coil circuit, u ISK-OUT is the ground pressure drop value of the end of the secondary coil 22 connected to the spark plug 4, i OUT is the value of the current through the secondary coil (i.e. the secondary current).

[0017] In the high-energy ignition coil of the present application, the discharge of the secondary coil 22 on the secondary coil circuit can be divided into two stages: the first stage is that the energy of the primary coil 21 is coupled to the secondary coil 22 to make the spark plug 4 conduct. The first stage is from time 0 to time T1 with a length of T1. The second stage is that the energy provided by the current maintaining device 7 turns on the spark plug 4 , and the second stage is from the time T1 to the time T1+T, and the length is T2. T=T1+T2. Therefore, the ignition energy value of the high...

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Abstract

The invention discloses a high-energy ignition coil. Both a primary coil and a secondary coil are wound on an iron core, the primary coil, the secondary coil and the iron core form a transformer, a switch controlled by an ECU (electronic control unit) is arranged on a circuit of the primary coil, one electrode of a spark plug is connected with one end of the secondary coil, and the other electrode of the spark plug is grounded, a vehicular power supply supplies power for the primary coil through a direct-current booster, direct-current voltage outputted by the vehicular power supply is boosted and then outputted by the direct-current booster, the other end of the secondary coil is connected with the direct-current booster or grounded through a reversely connected diode, and a current maintaining device is parallelly connected with the secondary coil and a serial branch circuit of the spark plug and maintains continuous conduction of the spark plug after the spark plug is conducted. The conduction time of the spark plug can be randomly adjusted by the ignition coil, so that ignition energy can be improved, the primary coil is connected by the aid of high voltage, and energy conversion efficiency is improved.

Description

technical field [0001] The present application relates to an ignition coil for an internal combustion engine vehicle. Background technique [0002] see Figure 1a , which is an existing ignition coil. The vehicle power supply 1 is usually a low-voltage DC power supply with a rated voltage between 8V and 16V, which is used to supply power to the primary coil 21 . The vehicle power supply 1 and the primary coil 2 constitute a primary coil circuit, on which a switch 3 controlled by an ECU (Electronic Control Unit) is provided. One end of the secondary coil 22 is grounded, the other end is connected to one electrode of the spark plug 4, and the other electrode of the spark plug 4 is grounded. The secondary coil 22 and the spark plug 4 form a secondary coil circuit. Both the primary coil 21 and the secondary coil 22 are wound on an iron core 23 , and these three constitute a transformer 2 . [0003] Figure 1a The ignition coil shown can also be modified as Figure 1b In thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/12H01F27/40
CPCH01F38/12H01T15/00F02P3/0407F02P3/05F02P9/002F02P9/007F02P15/10F02P3/00H01T13/00F02P3/0807F02P3/0876
Inventor 茅一春孙晓庆李毓强程捷
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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