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Equipment-and-Tool-Institute / j1939-84

J1939-84 implementation for etools.org
MIT License
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Add Offset to table A-1 for SP 91 #859

Closed ericthomasswenson closed 2 years ago

ericthomasswenson commented 3 years ago

Add Offset to table A-1 for SP 91. 0.4 % is close enough to 0: just like 99% is close enough to 100.

PGN 61443 with Supported SPNs 91, 92 09:55:06.4505 0CF00300 [8] D1 01 08 FF FF FF 6E FF Found: Electronic Engine Controller 2 from Engine #1 (0): SPN 558, Accelerator Pedal 1 Low Idle Switch: 01 SPN 559, Accelerator Pedal Kickdown Switch: 00 SPN 1437, Road Speed Limit Status: 01 SPN 2970, Accelerator Pedal 2 Low Idle Switch: 11 SPN 91, Accelerator Pedal Position 1: 0.400000 % SPN 92, Engine Percent Load At Current Speed: 8.000000 % SPN 974, Remote Accelerator Pedal Position: Not Available SPN 29, Accelerator Pedal 2 Position: Not Available SPN 2979, Vehicle Acceleration Rate Limit Status: 11 SPN 5021, Momentary Engine Maximum Power Enable Feedback: 11 SPN 5399, DPF Thermal Management Active: 11 SPN 5400, SCR Thermal Management Active: 11 SPN 3357, Actual Maximum Available Engine - Percent Torque: 44.000000 % SPN 5398, Estimated Pumping - Percent Torque: Not Available

WARN: 6.11.7.3.a - N.8 Engine #1 (0) reported value for SPN 91 (0.4) is implausible

ericthomasswenson commented 3 years ago

Investigate parasitic losses too.

PGN 65247 with Supported SPNs 3236 09:53:54.3957 18FEDF00 [8] 7F 20 01 07 7D C1 04 FF Found: Electronic Engine Controller 3 from Engine #1 (0): SPN 514, Nominal Friction - Percent Torque: 2.000000 % SPN 515, Engine's Desired Operating Speed: 36.000000 rpm SPN 519, Engine's Desired Operating Speed Asymmetry Adjustment: 7.000000 SPN 2978, Estimated Engine Parasitic Losses - Percent Torque: 0.000000 % SPN 3236, AFT 1 Exhaust Gas Mass Flow Rate: 243.400000 kg/h SPN 3237, AFT 1 Intake Dew Point: 11 SPN 3238, AFT 1 Exhaust Dew Point: 11 SPN 3239, AFT 2 Intake Dew Point: 11 SPN 3240, AFT 2 Exhaust Dew Point: 11

WARN: 6.11.7.3.a - N.8 Engine #1 (0) reported value for SPN 2978 (0.0) is implausible

ericthomasswenson commented 3 years ago

PGN 65270 with Supported SPNs 102, 105, 173 13:49:14.2427 18FEF600 [8] FF 07 45 FF FF 6D 36 FF Found: Intake/Exhaust Conditions 1 from Engine #1 (0): SPN 81, AFT 1 DPF Intake Pressure (use SPN 3609): Not Available SPN 102, Engine Intake Manifold #1 Pressure: 14.000000 kPa SPN 105, Engine Intake Manifold 1 Temperature: 29.000000 °C SPN 106, Engine Intake Air Pressure: Not Available SPN 107, Engine Air Filter 1 Differential Pressure: Not Available SPN 173, Engine Exhaust Temperature: 162.406250 °C SPN 112, Engine Coolant Filter Differential Pressure: Not Available

WARN: 6.11.7.3.a - N.8 Engine #1 (0) reported value for SPN 102 (14.0) is implausible PGN 64976 with Supported SPNs 3563 13:49:14.4417 18FDD000 [8] FF FF FF FF 39 FF FF FF Found: Intake/Exhaust Conditions 2 from Engine #1 (0): SPN 2809, Engine Air Filter 2 Differential Pressure: Not Available SPN 2810, Engine Air Filter 3 Differential Pressure: Not Available SPN 2811, Engine Air Filter 4 Differential Pressure: Not Available SPN 3562, Engine Intake Manifold #2 Pressure: Not Available SPN 3563, Engine Intake Manifold #1 Absolute Pressure: 114.000000 kPa SPN 4817, Engine Intake Manifold 1 Absolute Pressure (High Resolution): Not Available SPN 5422, Engine Intake Manifold 2 Absolute Pressure: Not Available

WARN: 6.11.7.3.a - N.8 Engine #1 (0) reported value for SPN 3563 (114.0) is implausible

ericthomasswenson commented 3 years ago

PGN 61444 with Supported SPNs 190, 512, 513 13:55:44.0076 0CF00400 [8] F0 7E 83 C8 12 00 F0 83 Found: Engine Speed from Engine #1 (0): SPN 899, Engine Torque Mode: 0000 SPN 4154, Actual Engine - Percent Torque (Fractional): 1.875000 % SPN 512, Driver's Demand Engine - Percent Torque: 1.000000 % SPN 513, Actual Engine - Percent Torque: 6.000000 % SPN 190, Engine Speed: 601.000000 rpm SPN 1483, Source Address of Controlling Device for Engine Control: 0.000000 source address SPN 1675, Engine Starter Mode: 0000 SPN 2432, Engine Demand - Percent Torque: 6.000000 %

WARN: 6.11.7.3.a - N.8 Engine #1 (0) reported value for SPN 512 (1.0) is implausible // 10 lb-ft is a little more than a gallon jug held out at arms length

ericthomasswenson commented 2 years ago

(New) table 1 offset for SP 91 of is 0.8 % is two bits

91 | Accelerator Pedal Position 1 | 61443 | BC 50 ms or rpm dependent | Yes | No | No | Fail | Warn | Warn | >0.8% | > 0.8%

https://github.com/Equipment-and-Tool-Institute/j1939-84/files/7171010/J1939-84-Table-A-1-MY24.15Sept2021.docx

ericthomasswenson commented 2 years ago

Subsumed by Table A-1 umbrella #1094