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IGNITION POSITION [14 records]

Record 1 2017-03-14

English

Subject field(s)
  • Ignition Systems (Motor Vehicles)
  • Aircraft Propulsion Systems
DEF

The moving ahead of the ignition spark in relation to piston position; produced by centrifugal or vacuum devices in accordance with engine speed and intake manifold vacuum.

OBS

ignition timing advance: term standardized by ISO.

OBS

spark advance: term officially approved by the Lexicon Project Committee (New Brunswick).

French

Domaine(s)
  • Allumage (Véhicules automobiles)
  • Propulsion des aéronefs
CONT

L'avance à l'allumage permet d'obtenir une pression de poussée des gaz maximale sur le piston lorsque la bielle et la manivelle du vilebrequin forment un angle de 90°.

OBS

avance à l'allumage : terme normalisé par l'ISO.

OBS

avance à l'allumage : terme uniformisé par le Comité du projet de lexiques (Nouveau-Brunswick).

Spanish

Campo(s) temático(s)
  • Sistemas de encendido (Vehículos automotores)
  • Sistemas de propulsión de aeronaves
Save record 1

Record 2 2016-11-09

English

Subject field(s)
  • Engineering Tests and Reliability
DEF

The minimum concentration of oxygen in a mixture of oxygen and nitrogen that will just support flaming combustion of a material under specified test conditions.

CONT

LOI is defined as the minimum volume concentration of oxygen in a mixture of oxygen and nitrogen that will just support sustained combustion of the material when ignited in a vertical position at its uppermost edge. Cotton fabrics, for example, have a LOI of 17 percent which means that if the oxygen is reduced below 17 percent the cotton will not continue to burn after the ignition source is removed. The higher the LOI of a fabric, the greater the probability that it will cease to burn once the ignition source is removed.

OBS

limiting oxygen index: term and definition standardized by ISO.

French

Domaine(s)
  • Fiabilité, contrôle et essais (Ingénierie)
DEF

Concentration minimale d'oxygène dans un mélange d'oxygène et d'azote qui entretiendra seulement la combustion avec flammes d'un matériau dans des conditions d'essai spécifiées.

OBS

indice limite d'oxygène : Il s'exprime en pourcentage.

OBS

indice limite d'oxygène : terme et définition normalisés par l'ISO.

Spanish

Campo(s) temático(s)
  • Fiabilidad y ensayos (Ingeniería)
DEF

Mínima concentración de oxígeno en una mezcla de oxígeno y nitrógeno que soporta la combustión con llamas de un material bajo condiciones de ensayo especificadas.

Save record 2

Record 3 2016-05-26

English

Subject field(s)
  • Ignition Systems (Motor Vehicles)
DEF

A computer-based ignition system which is usually a part of the electronic engine control unit (ECU).

OBS

ECU consists of a central control unit(CPU) or a microprocessor, random access memory(RAM), read only memory(ROM), and input/output interfaces. Based on information from input sensors(engine air flow, coolant temperature, crank position, throttle position, etc.), ECU determines optimum settings for the output actuators of fuel injection, ignition timing, idle speed, etc.

OBS

computer-controlled ignition system; digital ignition system: terms and definition standardized by ISO.

French

Domaine(s)
  • Allumage (Véhicules automobiles)
DEF

Système d'allumage commandé par ordinateur généralement utilisé comme composant de l'unité de contrôle électronique du moteur (ECU).

OBS

L'ECU se compose d'une unité de contrôle centrale (CPU) ou d'un microprocesseur, d'une mémoire vive (RAM), d'une mémoire morte (ROM), et d'interfaces entrée/sortie. Selon les informations issues des capteurs d'entrée (débit d'air moteur, température du liquide de refroidissement, position de vilebrequin, position de l'accélérateur, etc.), l'ECU détermine les paramètres optimaux pour les actionneurs d'injection de combustible, d'avance à l'allumage, de ralenti, etc.

OBS

système d'allumage commandé par ordinateur; système d'allumage à commande numérique : termes et définition normalisés par l'ISO.

Spanish

Save record 3

Record 4 2016-02-05

English

Subject field(s)
  • Rail Transport Operations
  • Statutes and Regulations (Rail Transport)
  • Railroad Safety
CONT

Firefighters also moved the electrical breakers inside the locomotive cab to the off position to eliminate a potential ignition source. These actions were in keeping with railway instructions.

French

Domaine(s)
  • Exploitation (Transport par rail)
  • Législation et réglementation (Transport par rail)
  • Sécurité (Transport par rail)
CONT

Les pompiers avaient aussi placé les disjoncteurs à l’intérieur de la cabine de la locomotive en position ouverte pour éliminer une source possible d’étincelles. Ces mesures étaient conformes aux instructions ferroviaires.

Spanish

Save record 4

Record 5 2006-02-15

English

Subject field(s)
  • Ignition Systems (Motor Vehicles)
  • Electrical Equipment (Motor Vehicles)
CONT

The ignition switch does several jobs. It turns the ignition system on and off. It a has a START position for operating the starting motor. It operates the steering-wheel lock, and an audible or light signal if the ignition key is in the ignition lock when a door opens or if seat belts are not buckled. In many vehicles, the electric fuel pump connects to the battery through the ignition switch. Other accessories such as the radio and heater blower motor also receive power through ignition switch.

French

Domaine(s)
  • Allumage (Véhicules automobiles)
  • Équipement électrique (Véhicules automobiles)
OBS

Ne pas confondre avec l'interrupteur d'allumage qui n'a que deux positions : la fermeture ou l'ouverture du circuit d'allumage. Le «commutateur d'allumage», quant à lui, comprend cinq positions : le démarrage, la mise en marche, les accessoires, le verrouillage et l'arrêt.

Spanish

Save record 5

Record 6 2000-04-28

English

Subject field(s)
  • Electrical Components
  • Control Instrumentation (Mechanical Components)
  • Safety Devices (Mechanical Components)
DEF

An interlock which proves a condition is proper for burner operation to continue through prepurge, ignition trials, and the run period. It is used with a primary or programming control which will shut down the burner if an improper conditions occurs. The interlock may be a combustion air controller(airflow switch), a damper position indicator(low or high fire proving switch), or a fuel pressure switch. It can be a recycling type, or it may require manual reset.

French

Domaine(s)
  • Composants électrotechniques
  • Dispositifs de commande (Composants mécaniques)
  • Organes de sécurité (Composants mécaniques)

Spanish

Save record 6

Record 7 2000-04-28

English

Subject field(s)
  • Combustion and Fuels (Fireplaces)
  • Burners and Steamfitting
CONT

open damper purge. During prepurge, the damper opens to high fire position and the burner motor drives air through the combustion chamber to remove any potentially explosive fuel or fumes. The damper closes to low fire position for ignition trials, and opens again to high fire position for the run period. Flame safeguard controls providing this feature have only 1 terminal for firing rate switching; they do not provide modulation during the run period.

French

Domaine(s)
  • Combustion et combustibles (Foyers)
  • Fumisterie et brûleurs

Spanish

Save record 7

Record 8 2000-04-28

English

Subject field(s)
  • Burners and Steamfitting
CONT

Low-high-low prepurge-a prepurge period during which the air damper is driven open for the purge period and then back to low fire position for the burner lightoff. This is called low-high-low proven prepurge if suitable interlocks indicate that the damper actually reached the open position during prepurge, and then closed again before ignition trials.

OBS

See records "low-high-low prepurge", "proved ignition" and "proven prepurge".

French

Domaine(s)
  • Fumisterie et brûleurs
OBS

Voir les fiches «prébalayage allures minimale-maximale-minimale», «allumage par étincelle contrôlée» et «prébalayage contrôlé».

Spanish

Save record 8

Record 9 1999-05-11

English

Subject field(s)
  • Blasting Work (Mining)
DEF

The placing of the detonator in the last cartridge to be inserted in the shothole with the active end of the detonator pointing inwards. This position tends to minimize the risk of gas ignition.

French

Domaine(s)
  • Travail aux explosifs (Exploitation minière)
CONT

En ce qui concerne l'emploi, les dynamites sont toujours amorcées avec des détonateurs [...] ou avec le cordeau détonant [...] : quand le détonateur est placé dans la première cartouche introduite dans les trous de mine, l'amorçage est dit postérieur; quand, au contraire, il est placé dans la dernière cartouche introduite, l'amorçage est dit antérieur. Quand la mise à feu est électrique, on emploie l'un ou l'autre, l'amorçage postérieur étant préféré quand on utilise les détonateurs à retard ou à micro-retard.

Spanish

Save record 9

Record 10 1993-01-26

English

Subject field(s)
  • Motor Vehicles and Bicycles
  • Engines (Motor Vehicles)
  • Electrical Equipment (Motor Vehicles)
CONT

The [electronic distributor-less ignition system] uses an electronic crankshaft monitor to sense engine speed, with a second cam-gear-mounted counter to determine crankshaft position and intake valve opening, and the... electronic engine control module is used to control the fuel injectors and spark-plug firing.

French

Domaine(s)
  • Véhicules automobiles et bicyclettes
  • Moteur (Véhicules automobiles)
  • Équipement électrique (Véhicules automobiles)

Spanish

Save record 10

Record 11 1993-01-26

English

Subject field(s)
  • Motor Vehicles and Bicycles
  • Ignition Systems (Motor Vehicles)
CONT

The [electronic distributor-less ignition system] uses an electronic crankshaft monitor to sense engine speed, with a second cam-gear-mounted counter to determine crankshaft position and intake valve opening, and the... electronic engine control module is used to control the fuel injectors and spark-plug firing.

French

Domaine(s)
  • Véhicules automobiles et bicyclettes
  • Allumage (Véhicules automobiles)

Spanish

Save record 11

Record 12 1988-06-10

English

Subject field(s)
  • Ignition Systems (Motor Vehicles)

French

Domaine(s)
  • Allumage (Véhicules automobiles)
CONT

(...) les repères d'allumage (...) indiquent que l'un des cylindres est en position d'allumage (...) [lorsqu'ils sont en face l'un de l'autre].

Spanish

Save record 12

Record 13 1988-04-05

English

Subject field(s)
  • Motor Vehicle and Bicycle Accessories
OBS

When you turn the ignition key to the on position, an indicator light will go on...

French

Domaine(s)
  • Accessoires d'automobiles et de bicyclettes

Spanish

Save record 13

Record 14 1986-04-10

English

Subject field(s)
  • Fueling Systems (Motor Vehicles)
DEF

An electric solenoid which holds the throttle valve open in the hot-idle position, and then permits the throttle valve to close completely when the ignition is turned off to prevent dieseling.

French

Domaine(s)
  • Alimentation (Véhicules automobiles)

Spanish

Save record 14

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