Engine Management System

VW SIMOS 18.1 EA888

Project VW SIMOS 18.1 EA888
Customer Audi
Software Version SC8L50Y0
Date 2014-11-10
Document Key 10213413 SPE 000 DE

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thereof to others without expressed authorisation are prohibited. Offenders will be held liable for payment of damages. All rights
created by patent grant or registration of a utility model or design patent are reserved.
 Transmittal, reproduction, dissemination and/or editing of this document as well as utilisation of its
contents and communication there of to others without expressed authorisation are prohibited.
Offenders will be held liable for payment of damages. All rights created by patent grant or registration
of a utility model or design patent are reserved.

Project VW SIMOS 18.1 EA888

Customer Audi
Software Version SC8L50Y0
Date 2014-11-10
Document Key 10213413 SPE 000 DE

Name Department Phone

Designed by Hirzel, Peter P ES SE STP RBG1 +49-941-790-4624
Released by Hirzel, Peter P ES SE STP RBG1 +49-941-790-4624

Diese Information ist lediglich eine technische Beschreibung des Produktes. Sie stellt keine
Beschaffenheits- oder Haltbarkeitsgarantie im Sinne des Paragraphen 443 BGB dar.
This information is exclusively a technical description of the products. It is not meant or intends
to be a special guarantee for a particular quality or durability with regard to section 443 BGB
German Civil Code).
Version history
Document Version Previous Version Change Description(including number)
DE DD 10265863
 Table of Contents

1 Introduction 1039
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1.1 System overview 1040

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1.2 PIN configuration of connector 1046

1.3 Standard analog inputs 1061

1.4 Definition of logic inputs 1063

2 AIRM-Air motion 1064

2.1 AIRM Configuration data 1065

2.2 Port flap variables 1066

2.3 Port flap position set point actuation signal processing 1073

2.4 Port flap adaptation 1087

2.5 Port flap actuator diagnosis 1093

2.6 Port flap power stage diagnosis 1127

2.7 Port flap power stage diagnosis (Appl. Inc.) 1130

3 AIRT-Air temperature 1132

3.1 AIRT General 1133

3.2 AIRT Configuration data 1136

3.3 AGGR adaptation: AIRT 1143

3.4 Acquisition of air temperatures 1147

3.5 Acquisition of air temperatures (Appl. Inc.) 1150

3.6 Air temperature sensor model (Appl. Inc.) 1154

3.7 Air temperature sensor model 1156

3.8 Ambient air temperature calculation (Appl. Inc.) 1172

3.9 Ambient air temperature calculation 1177

3.10 Intake gas temperature calculation 1198

3.11 Intake gas temperature model at intake manifold 1204

3.12 Intake gas temperature model at intake valve 1215

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 3.13 Intake gas temperature model at throttle 1223

3.14 Intake gas temperature model at intercooler 1228

3.15 Intake gas temperature model for exhaust gas recirculation 1230

3.16 Intercooler air temperature control 1233

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3.17 Signal diagnosis of temperatures delivered by INTC 1234

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3.18 Air temperature sensor diagnosis (Appl. Inc.) 1241

3.19 Air temperature sensor diagnosis 1245

3.20 Air temperature sensor diagnosis (ERRM interface) 1252

3.21 Air temperature sensor plausibility diagnosis (Appl. Inc.) 1257

3.22 Air temperature sensor plausibility diagnosis 1260

3.23 Air temperature sensor plausibility diagnosis (ERRM interface) 1270

3.24 Intake gas temperature sensor plausibility diagnosis (Appl. Inc.) 1272

3.25 Intake gas temperature sensor plausibility diagnosis 1275

3.26 Intake gas temperature sensor plausibility diagnosis (ERRM interface) 1287

4 ALFU-Alternative fuel 1289

4.1 ALFU General 1290

4.2 ALFU Configuration data 1292

4.3 Ethanol sensor acquisition 1294

4.4 Engine roughness signal preparation for fuel quality adaptation 1304

4.5 Injection time correction for alternative fuel 1316

4.6 Engine running adaptation (AFU) 1318

4.7 Engine running adaptation (AFU) (Appl. Inc.) 1347

4.8 Lambda based flex fuel ratio detection 1350

4.9 Lambda based flex fuel ratio detection (Appl. Inc.) 1366

4.10 Fuel tank level based flex fuel ratio detection 1369

4.11 Fuel tank level based flex fuel ratio detection (Appl. Inc.) 1389

4.12 Engine roughness based flex fuel ratio detection 1395

4.13 Alternative fuel ratio determination 1396

4.14 Alternative fuel ratio determination (Appl. Inc.) 1405

4.15 Default start strategy 1424

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 4.16 Engine roughness based fuel quality adaptation 1446

4.17 Ethanol sensor diagnosis 1463

4.18 Ethanol sensor plausibility diagnosis 1466

4.19 ALFU - Controller (gen) 1472

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4.20 ALFU - Controller (prj) 1478

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5 ARSD-Acquisition and Reporting of Statistical Data 1479

5.1 Cyclic redundancy check calculation algorithm 1480

5.2 ARSD Configuration data for Customer Statistics 1482

5.3 Data recorder 1485

5.4 Customer statistical data 1505

5.5 Customer statistical data (Appl. Inc.) 1531

5.6 Standard data for OBD radar 1541

6 BRSY-Braking system 1553

6.1 BRSY Configuration data 1554

6.2 BRSY General 1556

6.3 Brake servo unit pressure 1560

6.4 Brake servo unit pressure (Appl. Inc.) 1587

6.5 Vehicle stand still detection 1595

6.6 Brake servo unit output 1605

6.7 Brake servo unit pump control 1611

6.8 Brake servo unit pressure sensor diagnosis 1619

6.9 Brake servo unit pressure sensor diagnosis (Appl. Inc.) 1640

6.10 Brake servo unit pump diagnosis 1643

6.11 Brake servo unit pump diagnosis (Appl. Inc.) 1655

7 CBMD-Combustion modes 1656

7.1 CBMD General 1657

7.2 CBMD Configuration data 1660

7.3 Combustion mode switch 1682

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 7.4 Combustion mode inhibition (Appl. Inc.) 1687

7.5 Combustion mode inhibition 1715

7.6 Combustion state manager 1721

7.7 Combustion state manager (Appl. Inc.) 1730

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7.8 Combustion mode priorisation 1745

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7.9 Combustion mode request 1762

7.10 Combustion mode transition factors 1771

7.11 Combustion mode inhibition by minimum injection time (Appl. Inc.) 1775

7.12 Combustion mode inhibition by minimum injection time 1783

7.13 Combustion mode inhibition for scavenging 1803

7.14 Combustion mode summary 1813

7.15 Combustion mode request summary 1820

7.16 Combustion mode switch by diagnosis tool 1822

7.17 Combustion mode switch by diagnosis tool (error management interface) 1828

7.18 Combustion mode management (gen) 1830

8 CEVC-Crankcase evaporation control 1834

8.1 CEVC Configuration data 1835

8.2 AGGR adaptation: CEVC 1837

8.3 Oil dilution model 1839

8.4 Evaporation risk management 1877

8.5 Fuel evaporation model in crankcase 1902

8.6 Limitation of fuel correction from crankcase evaporation 1924

8.7 Evaporation risk management (ERRM interface) 1933

9 CHRA-Charger actuators 1938

9.1 CHRA Configuration data 1939

9.2 CHRA General 1942

9.3 Acquisition of pressure at pneumatic waste gate actuator 1946

9.4 Waste gate actuator pressure 1947

9.5 Recirculation actuator position 1953

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 9.6 Recirculation actuator position (Appl. Inc.) 1956

9.7 Recirculation actuator position control 1958

9.8 Turbocharger turbine actuator coordination 1960

9.9 Recirculation actuator diagnosis 1968

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9.10 Recirculation actuator diagnosis (Appl. Inc.) 1999

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9.11 Waste gate electrical diagnosis 2001

9.12 Waste gate electrical diagnosis (Appl. Inc.) 2034

9.13 CHRA adaptation and diagnosis 2037

9.14 CHRA fault operation manager 2119

9.15 CHRA fault operation manager (Appl. Inc.) 2123

9.16 CHRA power stage diagnosis 2125

9.17 CHRA sensor diagnosis 2152

9.18 CHRA actuator diagnosis 2161

9.19 CHRA actuator diagnosis (Appl. Inc.) 2232

9.20 CHRA adaptation and diagnosis (Appl. Inc.) 2239

9.21 CHRA sensor diagnosis (Appl. Inc.) 2242

9.22 Boost pressure actuator diagnosis EOL 2243

9.23 CHRA diagnosis (gen) 2248

9.24 CHRA position control and setpoint (gen) 2253

9.25 Boost pressure actuator operating manager 2267

9.26 CHRA position controller 2297

9.27 Boost pressure actuator safety limitation 2313

9.28 CHRA safety limitation (Appl. Inc.) 2338

9.29 CHRA sensor acquisition 2340

9.30 CHRA anti sticking 2347

9.31 CHRA cleaning 2352

9.32 Actuator temperature model 2356

10 CHRG-Charger 2378

10.1 CHRG Configuration data 2379

10.2 Charge air temperature 2388

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 10.3 Recirculation mass air flow determination 2400

10.4 Exhaust gas temperature for turbocharger 2403

10.5 Turbocharger compressor environment 2405

10.6 Basic boost pressure adaptation (Appl. Inc.) 2411

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10.7 Basic boost pressure 2413

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10.8 Basic boost pressure adaptation 2418

10.9 Turbocharger compressor model 2423

10.10 Detection of compressor surge 2432

10.11 Boost pressure limits 2436

10.12 CHRG dummy outputs 2442

10.13 Pressure upstream throttle setpoint 2450

10.14 Pressure upstream throttle setpoint (Appl. Inc.) 2461

10.15 Turbocharger compressor environment setpoints 2468

10.16 Turbocharger protection 2472

10.17 Turbocharger protection (Appl. Inc.) 2477

10.18 Recirculation actuator setpoint determination 2479

10.19 Recirculation actuator setpoint determination (Appl. Inc.) 2497

10.20 Boost pressure control 2499

10.21 Boost pressure control (Appl. Inc.) 2509

10.22 Turbocharger turbine control adaptation 2517

10.23 Waste gate flow setpoint 2524

10.24 Turbocharger turbine control 2527

10.25 Turbocharger turbine control (Appl. Inc.) 2541

10.26 Inverse turbocharger turbine model 2553

10.27 Torque based charge air temperature limitation 2562

10.28 Torque based turbocharger speed limitation 2574

10.29 Turbocharger minimum time control 2586

10.30 Boost pressure display (Appl. Inc.) 2601

10.31 Boost pressure display 2605

10.32 Turbocharger diagnosis 2611

10.33 Turbocharger control plausibility diagnosis 2632

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 10.34 Turbocharger control plausibility diagnosis (ERRM interface) 2645

10.35 Turbocharger overpressure diagnosis (Appl. Incs.) 2650

10.36 Turbocharger overpressure diagnosis (ERRM interface) 2655

10.37 Turbocharger plausibility diagnosis 2658

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10.38 Turbocharger plausibility diagnosis (ERRM interface) 2684

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10.39 Turbocharger plausibility diagnosis (Appl. Inc) 2687

10.40 Turbocharger control plausibility diagnosis (Appl. Inc.) 2691

10.41 Recirculation actuator plausibility diagnosis 2701

10.42 Recirculation actuator plausibility diagnosis (ERRM interface) 2719

10.43 Recirculation actuator plausibility diagnosis (Appl. Inc.) 2723

10.44 Turbocharger and pressure sensor EOL diagnosis 2729

10.45 Turbocharger overpressure diagnosis 2733

10.46 Turbocharger and pressure sensor EOL 2736

10.47 Turbocharger and pressure sensor EOL (Appl. Inc.) 2772

11 CUSF-Customer Supplied Functions 2776

11.1 System variables for customer specified functions 2777

11.2 Interface definitions of customer provided functionality 2789

11.3 Dynamic requirements of customer provided functionality 2920

11.4 Customer reference list 2946

11.5 Customer adaptation module: PWSL 2950

11.6 Customer adaptation module: IGSP 2953

11.7 Customer adaptation module: LACO 2955

11.8 Customer adaptation module: AIRT 2964

11.9 Customer adaptation module: DRRQ 2972

11.10 Customer adaptation module: EGCP 2975

11.11 Customer adaptation module: ENOS 2986

11.12 Customer adaptation module: ENSD 2991

11.13 Customer adaptation module: EVAC 3009

11.14 Customer adaptation module: INSY 3011

11.15 Customer adaptation module: KNCK 3022

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Document key: 10213413 SPE 000 DE
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