ATech Training 'Fuel Trim: Teaching Essential Skills for Engine Performance'
연료보정값 은 엔진진단의 첫 출발점이다. ATech 강의자료가 매우 잘 되어 있다. 엔진 진단에 관심있는 정비사에게 Mr. Jim Wilson 강의를 권장한다.
0:20 Class Objectives
0:55 Fuel Trim Trends
3:55 Fuel Trim Control Example
5:36 Fuel Trim OBDII Example
7:04 Fuel Trim Monitor
11:03 Tech Tips
12:51 Fuel System Monitor Drive Cycle (Hyundai)
16:08 Code Criteria
19:50 TSB Check (Hyundai)
23:17 Vehicle Load
25:49 Fuel Trim Cells
27:36 Starting Point in all Driveability Diagnostics
28:38 O2 Sensors
30:59 Fuel Trim Guidelines
31:53 O2 & Short-Term Fuel Trim
32:35 More Fuel Trim Guidelines
33:27 Fuel Trim Data Streams
34:53 OBDII AFR Current
36:04 EQ Ratio/LAMBDA
37:17 OEM Names for Fuel Trim
41:58 Feeding the Catalytic Convertor
45:02 Logical Fuel Trim Diagnostics
47:51 Fuel Requirement Calculation
51:00 Load & RPM
53:02 What's the Difference: Speed/Density V.S. Vane/MAF
56:08 MAP & MAF
58:43 Most used fuel Trim Testing Procedures
1:00:35 Drive Cycle Test Route
1:04:17 Idle Testing
1:07:23 20-40 MPH Test
1:09:13 40-60 MPH Test
1:10:40 High Load
Source: Fuel Trim: Teaching Essential Skills for Engine Performance, https://www.youtube.com/watch?v=Sya6QCkkofg
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