GRSG/2013/26
Proposal for amendments to Regulation No. 110

Proposal to introduce type approval provisions for “valve control at stop-start”. The proposal would let the tank valves stay open in a commanded stop-start phase as is the case for the idling phase of vehicles not equipped with start-stop systems. These provisions are similar to those proposed for UN Regulation No. 67

UNECE server
Excerpts from session reports
GRSG | Session 104 | 15-19 Apr 2013

35. On behalf of the task force on Liquefied Natural Gas vehicles (LNG), the expert from the Netherlands introduced ECE/TRANS/WP.29/GRSG/2013/7 proposing to insert into UN Regulation No. 110 new provisions for vehicles using LNG in their propulsion systems. He also presented GRSG-104-34, GRSG-104-35, GRSG-104-36, GRSG-104-37 and GRSG-104-38 proposing further improvements to the text as agreed by the task force during its meeting on 15 April 2013, prior to the GRSG session. GRSG noted GRSG-104-32 justifying the need for such amendments as well as GRSG-104-33 listing a number of questions and answers on general LNG background issues.

36. GRSG acknowledged the work done by the LNG task force and considered ECE/TRANS/WP.29/GRSG/2013/7 in detail. GRSG adopted the document, as reproduced in GRSG-104-44, and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their November 2013 sessions as draft Supplement 1 to the 01 series of amendments to UN Regulation No. 110, subject to a final review of GRSG-104-44 by the Working Party on Pollution and Energy (GRPE) at its forthcoming session in June 2013, particularly on environmental issues.

37. The expert from CLEPA introduced ECE/TRANS/WP.29/GRSG/2013/10 proposing to introduce into UN Regulation No. 110 type approval provisions for electronic control units (ECUs). GRSG adopted the document, as amended, and agreed to reflect the adopted text in GRSG-104-44, mentioned above.

38. The expert from CLEPA presented ECE/TRANS/WP.29/GRSG/2013/11 proposing to introduce into UN Regulation No. 110 type approval provisions for fuel selection systems. GRSG noted a number of concerns and preferred to refer the proposal to the informal group on Gaseous Fuelled Vehicles (GFV) for detailed consideration at the forthcoming session in Brussels. GRSG agreed to resume consideration on this subject at its next session on the basis of a revised document by CLEPA.

39. The expert from CLEPA also proposed to introduce type approval provisions for “valve control at the stop-start function” into UN Regulation No. 110 (ECE/TRANS/WP.29/GRSG/2013/12). The expert from OICA presented GRSG-104-19 improving the proposed text. GRSG agreed in principle on the both proposals, but preferred again to refer the proposal to GFV for detailed review. GRSG agreed to resume consideration on this subject at its next session on the basis of a revised document by CLEPA.

34. The expert from CLEPA presented ECE/TRANS/WP.29/GRSG/2013/11, ECE/TRANS/WP.29/GRSG/2013/12 and GRSG-104-18 proposing to introduce into UN Regulation No. 67 type approval provisions for fuel selection systems respectively for “valve control at the stop-start function”. Recalling the discussion on the same subject under agenda item 8 on UN Regulation No. 110 (see paras. 38 and 39 below), GRSG agreed to resume consideration on this matter at its next session. In this respect, the Chair invited the expert from CLEPA to prepare, if necessary, updated proposals.

39. The expert from CLEPA also proposed to introduce type approval provisions for “valve control at the stop-start function” into UN Regulation No. 110 (ECE/TRANS/WP.29/GRSG/2013/12). The expert from OICA presented GRSG-104-19 improving the proposed text. GRSG agreed in principle on the both proposals, but preferred again to refer the proposal to GFV for detailed review. GRSG agreed to resume consideration on this subject at its next session on the basis of a revised document by CLEPA.

GRSG | Session 107 | 30 Sep-3 Oct 2014

24. The expert from the Netherlands introduced ECE/TRANS/WP.29/GRSG/2014/29 to regulate the direction of discharging the pressure relief devices of CNG containers. He explained that the proposal addressed the safety of not only the vehicle occupants but also the surrounding area. The expert from IANGV introduced GRSG-107-35, which suggests that the discussion should be deferred until after the outcome of the ongoing research conducted in the United States of America on this matter. The experts from France, Germany, Sweden and OICA questioned the impact of this proposal on design of vehicle categories M1 and N1. GRSG agreed to resume discussion on this subject at its May 2015 session on the basis of a revised document.

GRSG | Session 105 | 8-11 Oct 2013

38. On the same subject than that mentioned under para. 35 above (new provisions for “valve control at stop-start”), the expert from CLEPA introduced ECE/TRANS/WP.29/GRSG/2013/26 proposing similar amendments to UN Regulation No. 110. GRSG adopted the document, as reproduced in Annex III of the session report, and requested the secretariat to submit the amendments to WP.29 and AC.1 for consideration at their March 2014 sessions as part (see para. 37 above) of draft Supplement 2 to the 01 series of amendments to UN Regulation No. 110.

GRSG | Session 108 | 4-8 May 2015

40. The expert from Belgium withdrew ECE/TRANS/WP.29/GRSG/2014/28. Recalling the discussion at the previous session of GRSG, the expert from the Netherlands presented ECE/TRANS/WP.29/GRSG/2015/5 (superseding ECE/TRANS/WP.29/GRSG/2014/30) clarifying the provisions of Chapter 18 of the Regulation following the introduction of provisions for the mandatory installation of manual and automatic valves. GRSG noted a number of comments. Following the discussion, GRSG adopted ECE/TRANS/WP.29/GRSG/2015/5, as amended below, and requested the secretariat to submit the adopted proposal to WP.29 and AC.1 for consideration at their November 2015 sessions, as draft Supplement 4 to the 01 series of amendments to UN Regulation No. 110.

Paragraph 18.3.4.8., amend “LNG valve (automatic)” to read “Automatic valve”.