ISO 13044-2:2021 Road vehicles — Fully automatic coupling systems 24 V (FACS) for heavy commercial vehicle combinations —Part 2: Electrical and pneumatic interface for 50 mm fifth wheel couplings

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Road vehicles — Fully automatic coupling systems 24 V (FACS) for heavy commercial vehicle combinations —Part 2: Electrical and pneumatic interface for 50 mm fifth wheel couplings是ISO于2021-01发布的ISO标准，适用于世界范围。

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INTERNATIONAL STANDARD ISO 13044-2:2021(E)

Road vehicles — Fully automatic coupling systems 24 V (FACS) for heavy commercial vehicle combinations —

Part 2: Electrical and pneumatic interface for 50 mm fifth wheel couplings

1 Scope

This document specifies the mechanical, electrical/electronic and pneumatic characteristics of a fully automated fifth wheel coupling system to ensure interchangeability between a towing vehicle and a coupled semi-trailer(s) with 24 V nominal supply voltage. The two vehicles together constitute an articulated vehicle or are part of a vehicle combination.

This document also supports the step-by-step introduction of fully automated fifth wheel coupling systems in the market. It specifies features necessary for mixed mode operation, i.e. the combination of a fully automated coupling system (FACS) equipped towing vehicle with a conventional semi-trailer, and vice versa, the combination of a conventional towing vehicle with a FACS-equipped semi-trailer.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 337, Road vehicles — 50 semi-trailer fifth wheel coupling pin — Basic and mounting/interchangeability dimensions

ISO 1726-1, Road vehicles — Mechanical coupling between tractors and semi-trailers — Part 1: Interchangeability between tractors and semi-trailers for general cargo

ISO 1726-2, Road vehicles — Mechanical couplings between tractors and semi-trailers — Part 2: Interchangeability between low-coupling tractors and high-volume semi-trailers

ISO 3842, Road vehicles — Fifth wheels — Interchangeability

ISO 6150:2018, Pneumatic fluid power — Cylindrical quick-action couplings for maximum working pressures of 1 MPa, 1,6 MPa, and 2,5 MPa (10 bar, 16 bar and 25 bar) — Plug connecting dimensions, specifications, application guidelines and testing

ISO 7638-1:2018, Road vehicles — Connectors for the electrical connection of towing and towed vehicles — Part 1: Connectors for braking systems and running gear of vehicles with 24 V nominal supply voltage

ISO 11992 (all parts), Road vehicles — Interchange of digital information on electrical connections between towing and towed vehicles

ISO 12098:2020, Road vehicles — Connectors for the electrical connection of towing and towed vehicles — 15-pole connector for vehicles with 24 V nominal supply voltage

ISO 13044-1, Road vehicles — 24 V fully automatic coupling systems (FACS) for heavy commercial vehicle combinations — Part 1: General requirements and definitions

ISO 16750-3:2012, Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 3: Mechanical loads

ISO 13044-2:2021(E)

ISO 16750-5, Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 5: Chemical loads

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 13044-1 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://w ww .iso. org/ obp

— IEC Electropedia: available at http://w ww.e lectropedia. org/ 3.1

fully automated coupling system

FACS

coupling and uncoupling system where all operations, i.e. mechanical, electrical, pneumatic and applicable auxiliary functions, are performed automatically, enabling the coupling and uncoupling process to be completed without direct manual intervention

[SOURCE: ISO 13044-1:2012, 3.3.1.3]

3.2

electrical/electronic-pneumatic interface module

EPI module

component, combining all electrical/electronic and pneumatic connections in one mating unit, consisting of two complementary parts, the EPI plug module (3.2.1) and the EPI socket module (3.2.2)

3.2.1

EPI plug module

part of the EPI module (3.2) containing the electric male contacts, pneumatic male connections and the alignment pins, it is permanently attached to the king pin side mounted on the semi-trailer (3.2.3)

3.2.2

EPI socket module

part of the EPI module (3.2) containing the electric female contacts, pneumatic female connections and the alignment sockets, it is permanently attached to the fifth wheel which is mounted to the tractor vehicle

3.2.3

semi-trailer

towed vehicle which is designed to be coupled to either a towing vehicle or to a dolly, and to impose a substantial vertical load either on the towing vehicle or on the dolly

3.2.4

alignment device

device placed on the trailer-side, which makes contact to the fifth wheel throat during the coupling process and centres the EPI plug relative to the EPI socket

4 Requirements

4.1 General

In order to guarantee the best functionality, comfort and safety, the use of FACS is recommended in combination with spring-brake equipped semi-trailers only. FACS does not exonerate the driver from ensuring the semi-trailer is correctly parked before coupling or uncoupling.

In order to guarantee best functionality, comfort and safety, the use of FACS is recommended for towing vehicles with height adjustable air-suspension at least on the rear axle.

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