ISO 4164-1978 rus PDF

Full title and description

Ст ISO 4164-1978 rus — Russian-language edition of ISO 4164:1978, entitled "Road vehicles — Mopeds — Engine test code — Net power", a technical standard specifying a test method for measuring the net power of moped engines and for presenting power and specific fuel consumption curves as a function of engine speed.

Abstract

This standard defines a standardized engine test code for mopeds intended to evaluate engine performance (net power) and to produce power and specific fuel‑consumption curves at full load across engine speeds. It is focused on net power measurement procedures, test conditions and the presentation of results for reciprocating and rotary piston spark‑ignition engines used in mopeds.

General information

• Status: Withdrawn (superseded by ISO 4164:2012).
• Publication date: December 1978 (first edition).
• Publisher: International Organization for Standardization (ISO); Russian edition/translation published as "Ст ISO 4164-1978 rus" by national/redistribution bodies.
• ICS / categories: 43.140 (Motor cycles and mopeds / Road vehicles).
• Edition / version: Edition 1 (1978).
• Number of pages: 11 pages (original ISO English edition).

Scope

Applies to engines designed for mopeds and specifies methods for testing and evaluating net power output, focusing on full‑load measurements and the derivation/presentation of power and specific fuel consumption versus engine rotational speed. The procedures are intended for use in laboratory engine test stands and apply to spark‑ignition reciprocating and rotary piston engines as fitted to mopeds. The standard addresses test setup, measurement sequence and result reporting rather than vehicle on‑road behaviour.

Key topics and requirements

• Definition of net power measurement for moped engines and the required engine operating conditions during tests.
• Specification of test procedures to obtain power and specific fuel‑consumption curves at full load over a range of engine speeds.
• Instrumentation and measurement accuracy expectations for torque, speed, fuel flow and related quantities (test‑bench requirements).
• Data presentation formats and correction/normalization practices for comparing results (e.g., ambient condition corrections).
• Normative limits on the scope (net power only — excludes other engine and vehicle performance metrics).

Typical use and users

Used by engine test laboratories, moped and small motorcycle manufacturers, type‑approval bodies, regulatory agencies and standards bodies for: verifying engine performance, producing homologation test reports, comparing designs and documenting power and fuel‑consumption characteristics during R&D and certification. Laboratories performing engine bench tests and regulatory testing will find it most relevant.

Related standards

ISO 4164:1978 was later revised and superseded by ISO 4164:2012 (current edition covering an expanded set of engine types and updated test rules). Related and referenced documents in the moped/motorcycle test domain include ISO 3833 (vehicle types and definitions), ISO 6726 (masses — vocabulary), ISO 6855 (fuel consumption and emissions test methods for mopeds) and ISO 9645 (noise measurement for mopeds), which together form part of the ISO corpus for mopeds and small motorcycles testing and classification.

Keywords

moped; engine test; net power; power curve; specific fuel consumption; test code; ISO 4164; engine test bench; mopeds; spark‑ignition engines.

FAQ

Q: What is this standard?

A: It is the Russian‑language edition/record of ISO 4164:1978, "Road vehicles — Mopeds — Engine test code — Net power", an ISO test method standard for measuring net engine power on mopeds.

Q: What does it cover?

A: It covers laboratory test procedures for obtaining net power and associated full‑load specific fuel‑consumption curves as a function of engine speed for moped engines; it specifies test conditions, measurement parameters and result presentation for net power assessment.

Q: Who typically uses it?

A: Engine test facilities, moped manufacturers, type‑approval and certification authorities, research and development teams, and standards organizations involved in vehicle/engine testing and homologation.

Q: Is it current or superseded?

A: ISO 4164:1978 has been withdrawn and superseded by ISO 4164:2012; users requiring current test procedures should consult the 2012 edition (ISO 4164:2012). The 1978 edition remains of historical and legacy value but is not the active ISO document for contemporary testing.

Q: Is it part of a series?

A: It is part of ISO/TC 22 work on mopeds and motorcycles and is grouped with other vehicle and test standards (for example ISO 3833, ISO 6726, ISO 6855, ISO 9645) that together address terminology, test methods and performance measurements for mopeds.

Q: What are the key keywords?

A: Moped, engine test code, net power, power curve, specific fuel consumption, engine test bench, test procedure, ISO 4164.