This International Standard establishes the rating of liquid spark-ignition engine fuel in terms of an arbitrary scale of octane numbers using a standard single-cylinder, four-stroke cycle, variable-compression ratio, carburetted, CFR engine operated at constant speed. Motor octane number (MON) provides a measure of the knock characteristics of motor fuels in automotive engines under severe conditions of operation. The motor octane number provides a measure of the knock characteristics of aviation fuels in aviation piston engines, by using an equation to correlate to aviation-method octane number or performance number (lean-mixture aviation rating).<\/p>\n
This International Standard is applicable for the entire scale range from 0 MON to 120 MON, but the working range is 40 MON to 120 MON. Typical motor fuel testing is in the range of 80 MON to 90 MON. Typical aviation fuel testing is in the range of 98 MON to 102 MON.<\/p>\n
This International Standard is applicable for oxygenate-containing fuels containing up to 4,0 % (m\/m<\/i>) oxygen and for gasoline containing up to 25 % (V<\/i>\/V<\/i>) ethanol.<\/p>\n NOTE 1 Although 25 % (V\/V<\/i>) of ethanol corresponds to approximately 9 % (m\/m<\/i>) oxygen, full applicability of this test method for that oxygen range has only been checked for gasoline type of fuels.<\/p>\n<\/blockquote>\n NOTE 2 Work is under way to check the possibility to use the method for gasoline containing up to 85 % (V<\/i>\/V<\/i>) ethanol.<\/p>\n<\/blockquote>\n NOTE 3 This International Standard specifies operating conditions in SI units but engine measurements may be specified in inch-pound units because these were the units used in the manufacture of the equipment, and thus some references in this International Standard include these units in parenthesis.<\/p>\n<\/blockquote>\n NOTE 4 For the purposes of this standard, the terms \u201c% (m\/m<\/i>)\u201d and \u201c% (V\/V<\/i>)\u201d are used to represent the mass fraction, \u00b5<\/i>, and the volume fraction, \u03c6<\/i>, of a material respectively.<\/p>\n<\/blockquote>\n Test variable characteristics <\/td>\n<\/tr>\n Petroleum products. Determination of knock characteristics of motor and aviation fuels. Motor method<\/b><\/p>\n\n
\n
\n
\n
PDF Catalog<\/h4>\n
\n
\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 4<\/td>\n Foreword <\/td>\n<\/tr>\n \n 7<\/td>\n Foreword <\/td>\n<\/tr>\n \n 8<\/td>\n Introduction <\/td>\n<\/tr>\n \n 9<\/td>\n Section sec_1
Section sec_2
1\tScope
2\tNormative references <\/td>\n<\/tr>\n\n 10<\/td>\n Section sec_3
Section sec_3.1
Section sec_3.2
Section sec_3.3
Section sec_3.4
Section sec_3.5
Section sec_3.6
Section sec_3.7
Section sec_3.8
Section sec_3.9
Section sec_3.10
3\tTerms and definitions <\/td>\n<\/tr>\n\n 11<\/td>\n Section sec_3.11
Section sec_3.12
Section sec_3.13
Section sec_3.14
Section sec_3.15
Section sec_3.16
Section sec_3.17
Section sec_3.18
Section sec_3.19
Section sec_3.20
Section sec_4
4\tPrinciple <\/td>\n<\/tr>\n\n 12<\/td>\n Section sec_5
Section sec_5.1
Section sec_5.2
Section sec_5.3
Section sec_5.4
Section sec_5.5
Section sec_5.6
Section sec_5.7
5\tReagents and reference materials <\/td>\n<\/tr>\n\n 13<\/td>\n Section sec_5.8
Section sec_5.9
Section sec_5.10
Section sec_6
Section sec_6.1
Section sec_6.2
6\tApparatus <\/td>\n<\/tr>\n\n 14<\/td>\n Section sec_6.3
Section sec_6.4
Section sec_6.5
Section sec_6.6
Section sec_7
Section sec_7.1
Section sec_7.2
Section sec_7.3
Section sec_8
Section sec_8.1
7\tSampling and sample preparation
8\tBasic engine and instrument settings and standard operating conditions
8.1\tInstallation of engine equipment and instrumentation <\/td>\n<\/tr>\n\n 15<\/td>\n Section sec_8.2
Section sec_8.3
Section sec_8.4
Section sec_8.5
Section sec_8.6
Table tab_1
8.2\tEngine speed
8.3\tValve timing
8.4\tValve lift
8.5\tIntake valve shroud
8.6\tCarburettor venturi <\/td>\n<\/tr>\n\n 16<\/td>\n Section sec_8.7
Section sec_8.8
Section sec_8.9
Section sec_8.10
Section sec_8.11
Section sec_8.12
Section sec_8.12.1
Section sec_8.12.2
Section sec_8.12.3
Section sec_8.13
Section sec_8.13.1
8.7\tDirection of engine rotation
8.8\tValve clearances
8.9\tOil pressure
8.10\tOil temperature
8.11\tCylinder jacket coolant temperature
8.12\tIntake air temperature
8.13\tIntake mixture temperature <\/td>\n<\/tr>\n\n 17<\/td>\n Section sec_8.13.2
Section sec_8.13.3
Section sec_8.14
Section sec_8.15
Section sec_8.16
Section sec_8.17
Section sec_8.18
Section sec_8.19
8.14\tIntake air humidity
8.15\tCylinder jacket coolant level
8.16\tEngine crankcase lubricating oil level
8.17\tCrankcase internal pressure
8.18\tExhaust back-pressure
8.19\tExhaust and crankcase breather system resonance <\/td>\n<\/tr>\n\n 18<\/td>\n Section sec_8.20
Section sec_8.21
Section sec_8.22
Section sec_8.23
Section sec_8.24
Section sec_8.25
Section sec_8.26
8.20\tBelt tension
8.21\tRocker arm carrier support basic setting
8.22\tRocker arm carrier basic setting
8.23\tRocker arm and push rod length basic settings
8.24\tBasic spark setting
8.25\tBasic ignition timer transducer to rotor vane gap setting
8.26\tBasic ignition timer control arm setting <\/td>\n<\/tr>\n\n 19<\/td>\n Section sec_8.27
Section sec_8.28
8.27\tSpark-plug gap
8.28\tBasic cylinder height setting <\/td>\n<\/tr>\n\n 20<\/td>\n Table tab_c
Figure fig_1
Section sec_8.29
8.29\tFuel-air ratio <\/td>\n<\/tr>\n\n 21<\/td>\n Section sec_8.30
Section sec_8.31
Section sec_8.32
Section sec_9
Section sec_9.1
8.30\tCarburettor cooling
8.31\tKnockmeter reading limits
8.32\tDetonation meter spread and time constant settings
9\tEngine calibration and qualification
9.1\tGeneral <\/td>\n<\/tr>\n\n 22<\/td>\n Section sec_9.2
Section sec_9.2.1
Section sec_9.2.2
Section sec_9.2.3
Section sec_9.2.4
Section sec_9.3
Section sec_9.3.1
Table tab_2
Section sec_9.3.2
9.2\tEngine fit-for-use qualification
9.3\tFit-for-use procedure in the 79,6\u00a0MON to 94,7\u00a0MON range <\/td>\n<\/tr>\n\n 23<\/td>\n Section sec_9.3.3
Section sec_9.4
Section sec_9.4.1
Table tab_3
Section sec_9.4.2
Section sec_9.5
9.4\tFit-for-use procedure below 79,6\u00a0MON and above 94,7\u00a0MON
9.5\tChecking performance on check fuels <\/td>\n<\/tr>\n\n 24<\/td>\n Section sec_10
Section sec_10.1
Section sec_10.2
Section sec_10.3
Section sec_10.3.1
Section sec_10.3.2
Section sec_10.3.3
Section sec_10.3.4
Section sec_10.3.5
10\tProcedure
10.1\tGeneral
10.2\tStart-up
10.3\tCalibration <\/td>\n<\/tr>\n\n 25<\/td>\n Section sec_10.4
Section sec_10.4.1
Section sec_10.4.2
Section sec_10.4.3
Section sec_10.4.4
Section sec_10.4.5
Section sec_10.4.6
Table tab_4
Section sec_10.5
Section sec_10.5.1
Section sec_10.5.2
Section sec_10.5.3
10.4\tSample fuel
10.5\tPrimary reference fuel No.\u00a01 <\/td>\n<\/tr>\n\n 26<\/td>\n Section sec_10.5.4
Section sec_10.6
Section sec_10.6.1
Section sec_10.6.2
Section sec_10.6.3
Section sec_10.6.4
Section sec_10.6.5
Section sec_10.7
Section sec_10.7.1
Section sec_10.7.2
Section sec_10.8
Section sec_10.8.1
Section sec_10.8.2
10.6\tPrimary reference fuel No.\u00a02
10.7\tAdditional measurement readings
10.8\tSpecial instructions for ratings above 100,0 MON <\/td>\n<\/tr>\n\n 27<\/td>\n Section sec_11
Section sec_11.1
Section sec_11.2
Section sec_11.3
Section sec_11.4
Section sec_11.5
Section sec_12
Section sec_12.1
11\tCalculation
12\tExpression of results <\/td>\n<\/tr>\n\n 28<\/td>\n Table tab_5
Section sec_12.2
Section sec_13
Section sec_13.1
Table tab_6
13\tPrecision
13.1\tGeneral <\/td>\n<\/tr>\n\n 29<\/td>\n Section sec_13.2
Section sec_13.3
Table tab_7
13.2\tRepeatability, r
13.3\tReproducibility, R <\/td>\n<\/tr>\n\n 30<\/td>\n Section sec_13.4
Section sec_13.5
Section sec_14
Section sec_14.1
Section sec_14.2
13.4\tPrecision at lower barometric pressure
13.5\tPrecision for fuels containing 15% to 25% (V\/V) ethanol
14\tTest report
14.1\tMotor spark-ignition engine fuels
14.2\tAviation piston-engine fuels <\/td>\n<\/tr>\n\n 31<\/td>\n Annex sec_A
Annex sec_A.1
Annex sec_A.2
Annex sec_A.3
Annex\u00a0A
\n(informative)<\/p>\n\n 32<\/td>\n Annex sec_A.4
Annex sec_A.5
Annex sec_A.6
Annex sec_A.7 <\/td>\n<\/tr>\n\n 33<\/td>\n Annex sec_A.8
Annex sec_A.9
Annex sec_A.10 <\/td>\n<\/tr>\n\n 34<\/td>\n Reference ref_1
Reference ref_2
Reference ref_3
Reference ref_4
Reference ref_5
Reference ref_6
Reference ref_7
Reference ref_8
Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2014<\/td>\n 38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":315307,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1074,2641],"product_tag":[],"class_list":{"0":"post-315303","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-75-160-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/315303","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/315307"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=315303"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=315303"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=315303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}