| 摘要 |
The present invention relates to a method and an apparatus for analyzing a vehicle state using an alternator ripple signal of a vehicle and, more particularly, to a method and an apparatus for analyzing a vehicle state using an alternator ripple signal of a vehicle, which can analyze by inspecting the state of a vehicle using the characteristics and shapes of the wavy pattern of an alternator ripple signal of the vehicle and then can diagnose failure. Through the present invention, various states of a vehicle can be analyzed and failure of the vehicle can be diagnosed only by analyzing an alternator ripple signal of a vehicle and inspecting the characteristics of the wavy pattern. In addition, the method and the apparatus prepared by the present invention can perform efficient state diagnosis and failure check using the characteristics of a voltage signal of the alternator ripple signal of a vehicle according to the basic operating principles and characteristics of an engine of the vehicle, without the need to form separate characteristic database by the type of vehicles even for engines of various types of vehicles having different conditions. [Reference numerals] (1) Check an injector; (2) Check an ignition system; (3) Check an air distribution; (AA) Perform a grounding test; (BB) Is the grounding level low?; (CC) Yes: Analyzable through generator voltage because of normal power grounding; (DD) Good engine rotational state (normal); (EE) Yes: Poor engine rotational state; (FF) No: Non-uniform rotation of each cylinder irregularly; (GG) Yes: Different rotation of some cylinder continuously; (HH) No: consistent engine RPM; (II) Yes: Different rotation by cylinders; (JJ) No: Different rotation by cylinders irregularly; (KK) Yes: Different rotation of some cylinder continuously; (LL,MM) Suggest a check direction; (S1) Input the number of cylinders; (S10a) Poor state due to compression leakage; (S10b) Check generator power/grounding; (S10c) Determine potential check points; (S10d) Determine check points; (S2) Receive the alternator ripple voltage; (S3) convert the ripple voltage filtering; (S4) Measure the ripple voltage cycle; (S5,S8) Is there a size change?; (S6) Does the size change cycle agree with the number of cylinders (regular)?; (S7) Order to remeasure when the engine is not started up; (S9) Does the size change cycle agree with the number of cylinders? |
