Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:19
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 19
Character Range: 155880–164212

19                                                 8                     9

           Appendix 4 Summary of approval process for engines fuelled with natural gas, engines fuelled with LPG and dual-fuel engines fuelled with natural gas/biomethane or LPG
Approval of LPG fuelled engines

                                                                     Paragraph 4.6.:  Requirements on universal fuel range type approval   Number of test runs   Calculation of "r"   Paragraph 4.7.:  Requirements on restricted fuel range type approval in case of positive ignition engines fuelled with natural gas or LPG   Number of test runs   Calculation of "r"
Refer to para. 4.6.6.
LPG-engine adaptable to any fuel composition                        Fuel A and fuel B                                                     2

Refer to para. 4.7.2.                                                                                                                                                                Fuel A and fuel B,
LPG-engine laid out for operation on one specific fuel composition                                                                                                                   fine-tuning between the tests allowed                                                                                                       2

       Approval of natural gas fuelled engines
                                                                                           Paragraph 4.6.:  Requirements on universal fuel range type approval                                       Number of test runs                Calculation of "r"                        Paragraph 4.7.:  Requirements on restricted fuel range type approval in case of positive ignition engines fuelled with natural gas or LPG  Number of test runs  Calculation of "r"
 Refer to para. 4.6.3.                                                                     GR (1) and G25 (2)                                                                                        2                                  and, if tested with an additional fuel;
                                                                                           At manufacturer's request engine may be tested on an additional market fuel (3),                                                             and
 NG-engine adaptable to any fuel composition                                               if S = 0.89 – 1.19                                                                                       (max. 3)
 Refer to para. 4.6.4.                                                                     GR  (1) and G23 (3) for H                                                                                2 for the H‑range, and
 NG-engine which is self-adaptive by a switch                                              and G25 (2) and G23 (3) for L                                                                            2 for the L‑range;                  and
                                                                                           At manufacturer's request engine may be tested on a market fuel (3) instead of G23, if S = 0.89 – 1.19  at respective position of switch 4
                                                                                                                                                                                                                                                                                                                                                                                                                             2 for the H-range
 Refer to para. 4.7.1.                                                                                                                                                                                                                                                            GR  (1) and G23 (3) for H or                                                                                                               or                   for the H-range
 NG-engine laid out for operation on either H‑range gas or L‑range gas                                                                                                                                                                                                            G25 (2) and G23 (3) for L                                                                                                                  2 for the L-range    or
                                                                                                                                                                                                                                                                                  At manufacturer's request engine may be tested on a market fuel (3) instead of G23, if S = 0.89 – 1.19                                                         for the L-range
                                                                                                                                                                                                                                                                                                                                                                                                                             2
                                                                                                                                                                                                                                                                                  GR (1) and G25 (2),                                                                                                                        2
                                                                                                                                                                                                                                                                                  Fine-tuning between the tests allowed;                                                                                                     or
 Refer to para. 4.7.2. NG-engine laid out for operation on one specific fuel composition                                                                                                                                                                                          At manufacturer's request engine may be tested on:                                                                                         2 for the H-range
                                                                                                                                                                                                                                                                                  GR (1) and G23 (3) for H or                                                                                                                or
                                                                                                                                                                                                                                                                                  G25 (2) and G23 (3) for L                                                                                                                  2 for the L-range
                                                                                                                                                                                                                                                                                                                                                                                                                             2

Approval for dual-fuel engines fuelled with natural gas/biomethane or LPG
Dual-fuel                                    Diesel mode  Dual-fuel mode
type1
CNG                                          LNG          LNG20                    LPG
                                                          Universal or restricted                       Fuel specific  Universal or restricted