Heavy duty charging and starting system testor and method

• US 20060244457A1
• Filed: 04/28/2005
• Published: 11/02/2006
• Est. Priority Date: 04/28/2005
• Status: Abandoned Application

• Current Assignee: Auto Meter Products Incorporated
• Original Assignee: Auto Meter Products Incorporated
• Inventors: Henningson, Dale B., Purkey, Bruce A.
• Application Number:
  US11/116,182
• Publication Number:
  US 20060244457A1
• Time in Patent Office: Days
• US Class Current: 324/426
• 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 31/3647 for determining the ability of a battery to perform a critical function, e.g. cranking
• CPC Class Codes: G01R 31/385 Arrangements for measuring battery or accumulator variables for monitoring G01R31/382

Abstract

A systematic method and system for testing the charging and starting systems of a vehicle, which requires each individual test to pass before proceeding is provided. In addition, the system and method incorporates an improved alternator test that determines whether the alternator belt is slipping using data read using a vehicle data port. Further, the system and method provides a battery bank test that correlates the voltage before and after a load is applied to the battery bank to the batteries'"'"' conditions. When testing the starter, the oil temperature is read via the vehicle data port, allowing for a determination of whether the current draw is abnormally high.

Claims

1. A method of testing a charging system of a vehicle comprising the steps of:

testing a bank of batteries of the vehicle;

testing cables connecting an alternator to the batteries;

testing the alternator; and

determining test results of the battery, cable and alternator testing steps.

2. The method according to claim 1, wherein if it is determined that the bank of batteries fails, said method further comprises:

testing each individual battery; and

charging or replacing said batteries until it is determined that said battery bank passes.

3. The method according to claim 1, further comprising the step of determining that the cables pass the cable testing before proceeding to a next testing step.

4. The method according to claim 1, further comprising the step of determining that the battery bank passed the bank testing before proceeding to a next testing step.

5. The method according to claim 1, wherein said step of testing the bank of batteries further comprises:

determining whether an engine of the vehicle is on;

if it is determined that the engine of the vehicle is on, instructing said engine to be turned off;

determining a size of the bank of batteries;

testing the bank of batteries to determine if a threshold voltage is met;

if said voltage threshold was met, applying a load to the bank;

measuring the voltage while the load is being applied; and

determining whether said bank of batteries passes based on said measured voltages, cold cranking amps of each battery and an entered temperature.

6. The method according to claim 1, wherein if said bank fails, said method further comprises:

testing the batteries individually; and

charging or replacing any failed battery; and

wherein if said threshold voltage is not met, said method comprises charging or replacing any failed battery.

7. The method according to claim 1, further comprising the steps of:

determining whether said vehicle has a vehicle data port; and

if said vehicle has a data port, reading data from said vehicle data port when the ignition of said vehicle is turned on.

8. A system for testing the charging system of a vehicle comprising:

a tester apparatus;

a plurality of load leads adapted to connect to components of the charging system;

a plurality of voltage leads for connecting to the components of the charging system;

a data connection cable for connecting said tester to a vehicle data port;

a cable for connecting said tester to an R-terminal on an alternator of the vehicle; and

a circuit for determining a condition of batteries of the vehicle, said cables and said alternator.

9. The system according to claim 8 wherein said tester apparatus is a hand-held tester.

10. The system according to claim 8, wherein said circuit for determining the condition of the batteries, cables and alternator further compres a processor.

11. An apparatus for testing a starting system of a vehicle comprising:

means for testing a bank of batteries of the vehicle;

means for testing a magnetic circuit of the starting system;

means for testing main starting cables of the starting system;

means for testing a starter of the vehicle; and

means for determining results of the battery, magnetic circuit, cables and starter testing steps.

12. The apparatus according to claim 11, further comprising means for determining that the magnetic circuit test passes before proceeding to a next testing step.

13. The apparatus according to claim 11, further comprising means for determining that the battery bank test passes before proceeding before proceeding to a next testing step.

14. The apparatus according to claim 11, further comprising means for determining that the main starting cables pass before proceeding before proceeding to a next testing step.

15. The apparatus according to claim 11, further comprising:

means for determining whether an engine of the vehicle is off;

means for determining the size of said bank of batteries when said engine is off;

means for testing said bank of batteries to determine if a threshold voltage is met;

means for applying a load to the bank if said threshold voltage is met;

measuring the voltage while the load is being applied; and

means for determining whether said bank of batteries passes based on said measured voltages, cold cranking amps of each battery and a temperature; and

means for retesting each battery until all pass.

16. The apparatus according to claim 11, wherein if said bank fails, said apparatus further comprises:

means for testing the batteries individually;

and means for charging or replacing any failed battery.

17. The apparatus according to claim 11, wherein if said threshold voltage is not met, said apparatus further comprises:

means for charging or replacing any failed battery;

18. The apparatus according to claim 11, wherein said starter test further comprises:

means for determining if the leads to a starter and said bank of batteries are connected correctly;

means for measuring the voltage drop from the bank of batteries to the starter while a load is applied;

means for measuring, while the engine is cranking, the voltage drop in the starter and cables;

means for reading the oil temperature of said vehicle engine via a vehicle data port; and

means for determining the current draw of said started based as a function of said oil temperature.

21. The system according to claim 16, wherein said circuit further comprises a processor.

26. The system according to claim 21 wherein said tester apparatus is hand-held.

27. The system according to claim 21, said circuit further comprises a processor.

19. A system for testing the starting system of a vehicle comprising:

a tester apparatus;

a plurality of load leads adapted to connect to components of the starting system;

a plurality of voltage leads for connecting to the components of the charging system;

a data connection cable for connecting said tester to a vehicle data port; and

said tester having an circuit for determining the condition of said batteries, said magnetic circuit, cables and said starter.

20. The system according to claim 19 wherein said tester apparatus is a hand-held apparatus.

22. An apparatus for testing a charging and starting system comprising:

means for determining whether a test should be run;

means for determining the number of batteries in the vehicle;

means for determining whether said vehicle has a data port; and

means for beginning said test.

23. The method according to claim 22, wherein means for determining further comprises determining if a prior test should be continued.

24. The method according to claim 22, further comprising:

means for reading data from said data port via a vehicle data port connected to said vehicle from a tester when the vehicle ignition is on; and

means for displaying said data.

25. A system for testing the charging and starting system of a vehicle comprising:

a tester apparatus;

a plurality of load leads adapted to connect to components of the charging and starting system;

a plurality of voltage leads for connecting to the components of the charging and starting system;

a data connection cable for connecting said tester to a vehicle data port;

an cable for connecting said tester to an R-terminal on said alternator; and

said tester having an circuit for determining the condition of batteries or battery bank, cables, magnetic circuit, said starter and said alternator.