Proposal from CLEPA to introduce type-approval requirements for Liquefied Petroleum Gas (LPG) fuel selection systems, including with regard to engine control units (ECU), CNG start-stop functionality, and a prohibition against the flow of gaseous fuel into the petrol/diesel fuel tank and vice versa.

Text prepared by the European Association of Automotive Suppliers (CLEPA) to enable the approval of an OEM engine control unit on a CNG/LNG vehicle during the vehicle type approval process, eliminating the need for a separate type approval of the ECU as is the current requirement.

Text prepared by the European Association of Automotive Suppliers (CLEPA) to introduce into Regulations Nos. 67 and 110 type approval provisions for “valve control at stop-start”. This proposal allows the tank valves to stay open in an active stop-start phase for CNG/LPG with stop-start engines.

Text prepared by CLEPA to introduce a prohibition on any flow of a gaseous fuel into a diesel/gasoline reservoir and limiting the flow of diesel/gasoline into a gaseous fuel tank in bi-fuel vehicles.

Working draft of the text to introduce type approval provisions of fuel selection system.

Draft text to introduce type approval provisions for “valve control at stop-start”.

Proposal to introduce type-approval provisions for “valve control at stop-start” into the regulation on LPG equipment. The proposal would allow tank valves stay open in a commanded stop-start phase as it is the case for the idling phase of non-stop-start vehicles. These provisions are similar to those for UN R110 on CNG vehicles.

Copy of the proposal to introduce type approval provisions for “valve control at stop-start” into UN R67, submitted to the Working Party on General Safety as document GRSG/2013/24 for consideration at its October 2013 session.