Fordonsteknik

Ämnesområden: Kylsystem. Smörjsystem
Kommittébeteckning: SIS/TK 220 (Motorer i bilar)
Källa: ISO
Svarsdatum: den 18 jul 2018
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This specification describes the methodology for measurement of heat transfer and pressure drop of liquid cooled Engine EGR coolers in internal combustion engines for road vehicles. The principles of this specification are valid for clean and fouled EGR coolers. Additional efforts have to be taken into account to guarantee comparable measurement results for fouled EGR coolers. These additional efforts have to be agreed between parties concerned.

Kommittébeteckning: SIS/TK 240 (El- och elektronikutrustning för vägfordon)
Källa: ISO
Svarsdatum: den 25 jul 2018
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This standard is applicable to road vehicles, which are subject to the usage of the electronic vehicle interface to perform a Periodical Technical Inspection (ePTI).

The standard specifies the ePTI terminology, use cases and technical requirements in order to support the ePTI-relevant vehicle safety system(s) checks during the Periodical Technical Inspection via the electronic interface.

The standard specifies:

— Terminology;

— Communication establishment between the ePTI external test equipment and the vehicle's ePTI-relevant systems;

— Usage of a credentials based authentication and authorisation mechanism between the ePTI external test equipment and the vehicle;

— Protection against tampering of the defined ePTI methods;

— Definition of ePTI relevant use cases:

— ePTI external test equipment discovers available data identifier as specified in ISO 20730-3,

— ePTI external test equipment queries ePTI-relevant system’s information, including software identification, software integrity, current and/or stored values

— ePTI external test equipment activates ePTI-relevant system’s actuators or routines.

— Definition of ePTI-relevant technical requirements;

— ePTI external test equipment minimum requirements;

This standard is based on standardised diagnostic communication protocols.

This standard excludes:

— Process definitions for performing the PTI check,

— Process and data definitions for off-board data provision,

— Standardised data exchange formats,

— Validation and verification of vehicle safety systems according to vehicle manufacturer specifications.

Kommittébeteckning: SIS/TK 218 (Däck och hjul)
Källa: ISO
Svarsdatum: den 25 jul 2018
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This International Standard specifies methods for measuring tyre-to-road sound emissions from tyres fitted on a motor vehicle under coast-by conditions — i.e. when the vehicle is in free-rolling, non-powered operation. This is typically achieved by putting the transmission in the neutral or equivalent position and switching off the engine as well as all auxiliary systems not necessary for safe driving.

This International Standard is applicable to passenger cars and commercial vehicles as defined in ISO 3833. It is not intended to be used to determine the sound contribution of tyres of vehicles running in powered condition nor for the determination of traffic sound nuisance at a given location.

Kommittébeteckning: SIS/TK 236 (Fordonsdynamik)
Källa: ISO
Svarsdatum: den 16 aug 2018
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This international standard describes a standard method for measuring a vehicle’s longitudinal and lateral (horizontal plane) centre of gravity (CG) positions and three methods for estimating a vehicle’s vertical CG position- the axle lift, tilt-table, and stable pendulum methods. It applies to heavy vehicles, that is commercial vehicles and buses as defined in ISO 3833 (trucks and trailers with maximum weight above 3,5 tons and buses and articulated buses with maximum weight above 5 tons, according to ECE and EC vehicle classification, categories M3, N2, N3, O3 and O4). CG measurements are performed separately for each single unit.

Kommittébeteckning: SIS/TK 240 (El- och elektronikutrustning för vägfordon)
Källa: ISO
Svarsdatum: den 4 sep 2018
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This part of ISO 14229 specifies data link independent requirements of diagnostic services, which allow a diagnostic tester (client) to control diagnostic functions in an on-vehicle Electronic Control Unit (ECU, server) such as an electronic fuel injection, automatic gear box, anti-lock braking system, etc. connected to a serial data link embedded in a road vehicle.

It specifies generic services, which allow the diagnostic tester (client) to stop or to resume non-diagnostic message transmission on the data link.

This part of ISO 14229 does not apply to non-diagnostic message transmission on the vehicle's communication data link between two Electronic Control Units. However, this part of ISO 14229 does not restrict an in-vehicle on-board tester (client) implementation in an ECU in order to utilize the diagnostic services on the vehicle's communication data link to perform bidirectional diagnostic data exchange.

This part of ISO 14229 does not specify any implementation requirements.