System for testing engine starter

Patent metadata

Field	Value
Publication number	US-11320339-B2
Application number	US-202016788397-A
Country	US
Kind code	B2
Filing date	Feb 12, 2020
Priority date	Feb 12, 2020
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

A performance testing system including an engine, a starter under test that is configured to start the engine, and a motor configured to generate power transferred to the engine to run the engine after the engine is started by the starter.

First claim

What is claimed is:

1. A performance testing system, the system comprising:
an engine;
a starter under test, the starter configured to start the engine; and
a motor configured to generate power transferred to the engine to run the engine after the engine is started by the starter.

2. The system of claim 1 , wherein the engine is an internal-combustion engine.

3. The system of claim 1 , wherein the engine includes a crankshaft turned by the motor after the starter starts the engine.

4. The system of claim 1 , wherein the motor is an induction motor.

5. The system of claim 1 , further comprising a clutch configured to engage the motor to transfer power from the motor to a crankshaft of the engine, and configured to disengage from the motor to disconnect the motor from the engine.

6. The system of claim 5 , further comprising a mechanical system connecting the clutch to the crankshaft of the engine.

7. The system of claim 6 , wherein the mechanical system includes at least one of a pulley, a belt, a coupling, a shaft, and an auto tensioner configured to dampen stress generated when the clutch engages the motor.

8. The system of claim 1 , further comprising a power inverter configured to control the motor.

9. The system of claim 8 , further comprising a control module configured to control activation of the motor, deactivation of the motor, speed of the motor, acceleration of the motor, and deceleration of the motor by way of the power inverter.

10. The system of claim 9 , wherein the control module is configured to control a clutch operable to connect the motor to the engine and disconnect the motor from the engine.

11. The system of claim 10 , wherein the control module is further configured to control the motor to run at a motor speed that is the same as, or about the same as, a cranking speed of the starter prior to the motor being connected to the engine.

12. The system of claim 11 , wherein the control module is configured to control the clutch to engage the motor to transfer power from the motor to the engine after the starter has started the engine.

13. The system of claim 12 , wherein after the engine is started by the starter and after the motor is connected to the engine, the control module is configured to accelerate the motor to accelerate the engine to an acceleration speed.

14. The system of claim 13 , wherein after the engine reaches the acceleration speed, the control module is configured to decelerate the motor to decelerate the engine to an idle speed.

15. A method for performing a performance test comprising:
starting an engine with a starter under test; and
after the engine has been started by the starter, running the engine with an electric motor.

16. The method of claim 15 , further comprising running the electric motor at a motor speed that is the same as, or nearly the same as, a cranking speed of the starter prior to connecting the motor to the engine.

17. The method of claim 16 , further comprising accelerating the engine with the electric motor to an acceleration speed after starting the engine with the starter.

18. The method of claim 17 , further comprising deceleration the engine to an idle speed with the motor after accelerating the engine to the acceleration speed.

19. The motor of claim 15 , further comprising transferring power from the motor to the engine by way of a clutch and a mechanical system including at least one of a pulley, a belt, a coupling, a shaft, and an auto tensioner configured to dampen stress generated when the clutch engages the motor.

20. The method of claim 15 , the method further comprising performing at least one of an endurance cranking test, a cold temperature cranking test, a hot temperature cranking test, a speed/torque test, and a dynamometer test.

Assignees

• Denso Int America Inc

Inventors

• Chin Daniel
• Yamaguchi Ryo
• Nishida Yoshimichi
• Park Dong Ju

Classifications

• F02N11/0859

  specially adapted to the type of the starter motor or integrated into it · CPC title

• G01M15/02 Primary

  Details or accessories of testing apparatus · CPC title

• F02N11/108

  for diagnosis of the starter or its components · CPC title

• G01M15/044 Primary

  by monitoring power, e.g. by operating the engine with one of the ignitions interrupted; by using acceleration tests · CPC title