Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:99:p10
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 99 (pt 10/39)
Character Range: 1180790–1183920

service parts and diagnostic tools and test equipment, unless such information is covered by intellectual property rights or constitutes specific know-how of the manufacturer or the OEM supplier(s).
2.1.1. A description of the type and number of the pre-conditioning cycles used for the original type approval of the engine or vehicle.
2.1.2. A description of the type of the OBD demonstration cycle used for the original type approval of the engine or vehicle for the component monitored by the OBD system.
2.1.3.  A comprehensive document describing all sensed components with the strategy for fault detection and MI activation (fixed number of driving cycles or statistical method), including a list of relevant secondary sensed parameters for each component monitored by the OBD system and a list of all OBD output codes and format used (with an explanation of each code and format) associated with individual emission-related power-train components and individual non-emission related components, where monitoring of the component is used to determine MI activation. In particular, in the case of vehicle types that use a communication link in accordance with ISO 15765-4 "Road vehicles — Diagnostics on Controller Area Network (CAN) - Part 4: Requirements for emissions-related systems", a comprehensive explanation for the data given in service $ 05 Test ID $ 21 to FF and the data given in service $ 06, and a comprehensive explanation for the data given in service $06 Test ID $ 00 to FF, for each OBD monitor ID supported, shall be provided.
In case other communication protocols standards are used, equivalent comprehensive explanation shall be provided.

2.1.4. The information required by this paragraph may, for example, be defined by completing a table as follows:
Component     Fault code  Monitoring strategy         Fault detection criteria                          MI activation criteria  Secondary parameters                                                                  Preconditioning                      Demonstration test
SCR catalyst  P20EE       NOx sensor 1 and 2 signals  Difference between sensor 1 and sensor 2 signals  2nd cycle               Engine speed, engine load, catalyst temperature, reagent activity, exhaust mass flow  One OBD test cycle (WHTC, hot part)  OBD test cycle (WHTC, hot part)

         Annex 15 Additional technical requirements for diesel-gas dual-fuel engines and vehicles
              1.  Scope

           This annex shall apply to dual-fuel engines and dual-fuel vehicles.

              2.  Definitions and abbreviations

              2.1. "Gas Energy Ratio (GER)" means in case of a dual-fuel engine the ratio (expressed as a percentage) of the energy content of the gaseous fuel[1] over the energy content of both fuels (diesel and gaseous).

              2.2. "Average gas ratio" means the average gas energy ratio calculated over a specific operating sequence.

              2.3. "Heavy-Duty Dual-Fuel (HDDF) Type 1A engine" means a dual-fuel engine that operates over the hot part of the WHTC test-cycle with an average gas ratio that is not lower than 90