System and method of ignition coil testing

• US 9,494,125 B2
• Filed: 06/13/2014
• Issued: 11/15/2016
• Est. Priority Date: 06/13/2014
• Status: Active Grant

• Current Assignee: Innova Electronics Corporation (Innova Telematics Solutions)
• Original Assignee: Innova Electronics Corporation (Innova Telematics Solutions)
• Inventors: Pham, Phuong, Constable, Doug, Protti, John
• Primary Examiner(s): Koval, Melissa
• Assistant Examiner(s): NGUYEN, TRUNG Q
• Application Number:
  US14/304,510
• Publication Number:
  US 20150361946A1
• Time in Patent Office: 886 Days
• Field of Search: 324/323, 324/338, 324380-384, 324/378, 324/402, 324/500, 324/502, 324/169, 324/160
• US Class Current: 1/1
• CPC Class Codes: F02P 17/12 Testing characteristics of the spark, ignition voltage or current testing of sparking plugs H01T13/60
• CPC Class Codes: F02P 2017/121 by measuring spark voltage
• CPC Class Codes: G01R 31/006 on road vehicles, e.g. automobiles or trucks testing of ignition installations peculiar to internal combustion engines F02P17/00
• CPC Class Codes: G01R 31/72 Testing of electric windings testing of transformers G01R31/62
• CPC Class Codes: H01F 7/1844 Monitoring or fail-safe circuits for relays H01H47/002

Abstract

An ignition coil tester for testing an ignition coil having primary and secondary circuits. The tester includes a cable connector including a primary circuit connector and a secondary circuit connector electrically connectable to the ignition coil. The tester further includes an electronic ignition control module electrically coupled to the primary and secondary circuit connectors and configured to generate ignition coil testing signals for communication to the ignition coil via the primary and secondary circuit connectors The electronic ignition control module is further configured to monitor the connection between the primary circuit connector and the primary circuit of the ignition coil and the connection between the secondary circuit connector and the secondary circuit of the ignition coil, and cease communication of the ignition coil testing signals when the primary circuit connector or secondary circuit connector are not connected to the respective ones of the primary and secondary circuits.

Claims

1. An ignition coil tester for testing an ignition coil having a primary circuit and a secondary circuit, the ignition coil tester comprising:

a cable connector including;

a primary circuit connector electrically connectable to the primary circuit of the ignition coil; and

a secondary circuit connector electrically connectable to the secondary circuit of the ignition coil; and

an electronic ignition control module electrically coupled to the primary circuit connector and the secondary circuit connector, wherein the electronic ignition control module is configured to;

generate ignition coil testing signals for communication to the ignition coil via the primary circuit connector and the secondary circuit connector;

monitor either or both of a first connection between the primary circuit connector and the primary circuit of the ignition coil and a second connection between the secondary circuit connector and the secondary circuit of the ignition coil; and

cease communication of the ignition coil testing signals when the primary circuit connector or the secondary circuit connector are not connected to the respective ones of the primary circuit and the secondary circuit of the ignition coil;

wherein the primary circuit connector and the secondary circuit connector collectively define a unique connector ID; and

wherein the electronic ignition control module is configured to generate the ignition coil testing signals dependent upon the unique connector ID.

2. The ignition coil tester recited in claim 1, wherein the cable connector includes an air gap.

3. The ignition coil tester recited in claim 2, further comprising a resistor operatively associated with the air gap.

4. The ignition coil tester recited in claim 1, further comprising a magnetic pickup sensor configured to collect a signal from a trigger ignition coil.

5. The ignition coil tester recited in claim 1, further comprising a power supply in electrical communication with the electronic ignition control module.

6. The ignition coil tester recited in claim 1, wherein the electronic ignition control module is configured to generate ignition coil testing signals associated with multiple RPM speeds.

7. The ignition coil tester recited in claim 1, wherein the ignition coil testing signals are adapted to test current leakage.

8. The ignition coil tester recited in claim 1, wherein the ignition coil testing signals are adapted to test winding resistance.

9. A method of testing an ignition coil having a primary circuit and a secondary circuit, the method comprising the steps of:

generating ignition coil testing signals for communication to the ignition coil;

communicating the ignition coil test signals to the ignition coil, wherein a primary circuit connector communicates the ignition coil test signals to the primary circuit and a secondary circuit connector communicates the ignition coil test signals to the secondary circuit;

monitoring either or both of a first connection between the primary circuit connector and the primary circuit of the ignition coil and a second connection between the secondary circuit connector and the secondary circuit of the ignition coil; and

ceasing communication of the ignition coil testing signals when the primary circuit connector or the secondary circuit connector are not connected to the respective ones of the primary circuit and the secondary circuit of the ignition coil;

wherein the primary circuit connector and the secondary circuit connector collectively define a unique connector ID, the ignition coil testing signals generated being dependent upon the unique connector ID.

10. The method recited in claim 9, wherein the step of generating ignition coil testing signals includes generating testing signals for testing ignition coil performance at multiple speeds.

11. The method recited in claim 9, wherein the step of generating ignition coil testing signals includes generating testing signals for testing current leakage of the ignition coil.

12. The method recited in claim 9, wherein the step of generating ignition coil testing signals includes generating testing signals for testing winding resistance of the ignition coil.