CIMAC Recommendations

The following CIMAC Recommendations have been prepared by the CIMAC Working Groups. CIMAC Recommendations are the most formal CIMAC publications prepared by the CIMAC Working Groups, aimed typically at the description of a technical matter, giving background information and providing recommendations as to how to deal with the topic. It can be taken as a kind of an industry standard and might be taken as the basis for later co-operation with other organisations in the standardisation area.

The recommendations can now be downloaded as pdf-files by clicking on the description of each entry below or via the 'Download' option on the left hand side or from the Technical Paper Database. The downloads are free of charge for all.



CIMAC Recommendation No. 30
Used oil analysis is an important part of engine maintenance. It provides information about the condition of the oil, its suitability for further use and to a certain extent information about the .. more
CIMAC Recommendation No. 29
This document describes and gives insights into the lubrication of medium speed engines and current operating practices. Its objective is to contribute to the efficient and reliable operation of .. more
CIMAC Recommendation No. 28
This CIMAC ‘Guide to diesel exhaust emissions control of NOx, SOx, particulates, smoke and CO2 – seagoing ships and large stationary diesel power plants’ gives some background .. more
CIMAC Recommendation No. 27
Turbocharger manufacturers use an efficiency definition derived from the thermodynamics of flow machines which aims to describe the behaviour of the turbocharger under controlled conditions and .. more
CIMAC Recommendation No. 26
Environmental legislation already in place has impacted the marine industry, and with new legislations on the horizon engine manufacturers and shipowners are evaluating a number of options to .. more
CIMAC Recommendation No. 25
The purpose of this document is to provide designers, shipbuilders and operators with best practice guidelines for the design of fuel systems for commercial ships burning fuels that comply with .. more
CIMAC Recommendation No. 24
This document describes the system to treat the system lubricant of medium speed and crosshead diesel engines. It explains why treatment is necessary and what the consequences are of inadequate .. more
CIMAC Recommendation No. 23
Exhaust emissions from diesel and gas non-automotive reciprocating engines are currently being measured with a number of different measurement methods for each exhaust component. Many of these .. more
CIMAC Recommendation No. 22
This document brings together insights into mechanisms and phenomena of oil degradation resulting from stress of the lubricant in large 4-stroke (medium speed and high speed) and 2-stroke diesel .. more
CIMAC Recommendation No. 21
This fourth edition of Fuel Recommendations cancels and replaces the third edition of CIMAC Recommendations Regarding Fuel Requirements for Diesel Engines No. 11 dated 1990, which has been .. more
CIMAC Recommendation No. 20
These guidelines are intended as a summary of the main lubrication features of large, high speed trunk piston diesel engines operating on distillate fuels and are different from those described for .. more
CIMAC Recommendation No. 19
This document brings together insights into and current practices for the lubrication of gas engines, excluding rotary and automotive types. Its objective is to contribute to the efficient and .. more
CIMAC Recommendation No. 18
This document addresses the impact of fuel on lubrication of large diesel engines, both 2-stroke crosshead and 4-stroke trunk piston type and identifies major areas of concern for which some .. more
CIMAC Recommendation No. 17
This document addresses oil consumption defined as the combined amounts of oil make-up and system charge renewal that are required: (i) To keep the engine operating satisfactorily and: (ii) To .. more
CIMAC Recommendation No. 16
The following Guidelines have been drawn up by a cross-section of organisations involved in both the tendering and running of O&M contracts. The intention has been to use this experience of .. more
CIMAC Recommendation No. 15
The guideline contains short, precise and readable information that describe the lubrication principles applicable to low-speed two-stroke crosshead diesel engines. The guidelines do not replace .. more
CIMAC Recommendation No. 14
This CIMAC standard sets out the procedure for measuring the capacity of a medium-speed or high-speed engine to generate vibration and the determination of the frequency limits of validity of the .. more
CIMAC Recommendation No. 13
The aim of this document is to recommend for a variety of existing and forthcoming fuels suitable lubricant types to be used in today's and future engines. The document brings together current .. more
CIMAC Recommendation No. 12
This document contains recommendations for exhaust emissions measurement as made by a CIMAC Working Group. The document covers gas turbines and reciprocating engines which run on liquid or gaseous .. more
CIMAC Recommendation No. 11
The recommendation is a further development of the earlier CIMAC publication with respect to fuel requirements and although still based on the International Standards Organisation - Specification .. more
CIMAC Recommendation No. 10
In the United States as in Europe, legislature attaches increasing importance to questions of liability and it is the duty of the manufacturers to guard themselves against these new demands. The .. more
CIMAC Recommendation No. 09
The recommendation presents guidelines for the design of a modern fuel oil treatment plant for marine and land-based installations and some suggestions for its use. A considerable amount of .. more
CIMAC Recommendation No. 08
The scope of the recommendation covers fuel specifications for all residual diesel engine fuels that are of economic importance today or probably will be in the future. Distillate fuels are .. more
CIMAC Recommendation No. 07
In the United States as in Europe, legislature attaches increasing importance to questions of liability and it is the duty of the manufacturers to guard themselves against these new demands. The .. more
CIMAC Recommendation No. 06
The aim of the document is to provide a comprehensice lexicon with respect to the internal combustion engine and the gas turbine industry.   Download Recommendation [PDF] more
CIMAC Recommendation No. 05
Part I: Engine de-rating on account of ambient conditions.Part II: Engine acceptance tests.The determination of the power of turbocharged internal combustion engines under site conditions which are .. more
CIMAC Recommendation No. 04
The purpose for this recommendation is to list symbols and SI units for use in Internal Combustion Engines. The recommendations and selections of units are based on the following ISO .. more
CIMAC Recommendation No. 03
The recommendation outlines standardized procedures to determine the noise radiated by reciprocating engines to the surrounding air, so as to ensure comparable results. The recommendation applies .. more
CIMAC Recommendation No. 02
The purpose of this recommendation is to provide standard procedures and rules for the conductance and reporting of acceptance tests in order to determine: power, thermal efficiency and other .. more
CIMAC Recommendation No. 01
The aim of the present recommendation is to establish unified regulations for the preparation, execution and interpretation of acceptance tests. The acceptance tests have the general aim of .. more
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