GOST R 55231-2012 PDF

Full title and description

GOST R 55231-2012 — "Системы автоматического регулирования частоты вращения (САРЧ) судовых, тепловозных и промышленных двигателей внутреннего сгорания. Общие технические условия" (Automatic rotational frequency control systems (ARFCS) of marine, locomotive and industrial reciprocating internal combustion engines. General specifications). The standard was prepared with participation of the Central Research Diesel Institute (ЦНИДИ) and was adopted in alignment with ISO 3046‑4:2009.

Abstract

GOST R 55231-2012 establishes terms, classifications, technical requirements, acceptance rules and test methods for automatic rotational frequency control systems (ARFCS) used on marine, locomotive and industrial reciprocating piston diesel and gas internal‑combustion engines. It is based on and consistent with ISO 3046‑4:2009 (Speed governing).

General information

• Status: Active / in force.
• Publication date: Approved 27 November 2012; effective (date of introduction) 1 July 2013.
• Publisher: National standard of the Russian Federation — Federal Agency on Technical Regulating and Metrology (Rosstandart); prepared by ООО "ЦНИДИ".
• ICS / categories: Internal combustion engines — ICS 27.020 (OKC / ОКС 27.020).
• Edition / version: GOST R 55231-2012 (first introduction; adopted 2012, in force from 2013).
• Number of pages: 18 pages (typical published layout).

Scope

The standard applies to automatic rotational frequency control systems for marine, locomotive and industrial piston diesel and gas internal‑combustion engines and specifies general technical requirements, acceptance criteria and test methods. It explicitly excludes systems for road vehicles, tractors, agricultural machines and aircraft engines; it covers both direct and indirect governor types and defines classifications for single‑speed, multi‑speed and all‑range governing systems.

Key topics and requirements

• Definitions and classification of ARFCS (single‑mode, all‑mode, two‑mode; direct/indirect action, mechanical, electro‑mechanical, electronic).
• Performance requirements: static characteristic limits (governor droop/steepness), permissible setting ranges (minimum/maximum speed settings), and steady‑state accuracy tolerances.
• Dynamic requirements: permissible transient response parameters including tempo (rate) of setpoint changes and response to sudden load changes; test procedures for transient and steady behaviour.
• Acceptance and test methods: procedures for factory and bench testing, simulation of instantaneous load change (informative annex), and measurement/reporting conventions.
• Application notes: provisions for engines intended for parallel operation, electrical generation drives and special duty profiles.

Typical use and users

Primary users include engine manufacturers (marine, locomotive, industrial), governor and control‑system designers, shipyards, locomotive builders, testing and certification laboratories, procurement and regulatory bodies specifying acceptance tests and performance for prime movers and generator sets. System integrators and maintenance organizations use the document as a reference for commissioning and periodic verification.

Related standards

Directly related to ISO 3046‑4:2009 (Reciprocating internal combustion engines — Performance — Part 4: Speed governing), which the GOST references and follows. Other related documents include other parts of the ISO 3046 series and national GOST/GOST R standards addressing engine performance, testing and safety for marine and locomotive applications.

Keywords

GOST R 55231-2012; automatic rotational frequency control; ARFCS; governor; speed governing; reciprocating internal combustion engine; marine engines; locomotive engines; industrial engines; ISO 3046‑4:2009.

FAQ

Q: What is this standard?

A: GOST R 55231-2012 is a Russian national standard specifying general technical requirements, classifications and test methods for automatic rotational frequency control systems (governing systems) used on marine, locomotive and industrial reciprocating piston diesel and gas engines.

Q: What does it cover?

A: It covers terminology, classification of governor types, static and dynamic performance requirements (accuracy, droop, response rates), acceptance criteria and test procedures, and includes informative material (e.g., simulation of instantaneous load change). It does not apply to road vehicles, agricultural tractors or aircraft engines.

Q: Who typically uses it?

A: Engine manufacturers, governor/control suppliers, shipbuilders, locomotive manufacturers, test laboratories, certification bodies and maintenance teams use the standard for design, acceptance testing and commissioning of engine speed‑governing systems.

Q: Is it current or superseded?

A: The standard was approved by Rosstandart (order N 1260‑ст) on 27 November 2012 and came into force on 1 July 2013; it is listed as active / in force. Users should check the national registry or Rosstandart bulletins for any later amendments or replacements.

Q: Is it part of a series?

A: Yes — the document aligns with and references ISO 3046‑4:2009 (speed governing) and fits within the broader set of standards and parts addressing reciprocating internal combustion engine performance and testing.

Q: What are the key keywords?

A: Governor, speed governing, ARFCS, engine control, droop, transient response, acceptance tests, marine engines, locomotive engines, industrial engines.