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An air-fuel ratio meter monitors the air–fuel ratio of an internal combustion engine. Also called air–fuel ratio gauge, air–fuel meter, or air–fuel gauge, it reads the voltage output of an oxygen sensor, sometimes also called AFR sensor or lambda sensor. The original narrow-band oxygen sensors became factory installed standard in the late 1970s and early 1980s. In recent years a newer and much more accurate wide-band sensor, though more expensive, has become available.

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  • يقوم مقياس نسبة الهواء إلى الوقود بقياس نسبة الهواء إلى الوقود في محركات الاحتراق الداخلي. حيث يقوم بقراءة الجهد الخارج من ، ويٌسمى أحياناً مستشعر لامدا، ويكون الجهد إما من مستشعر ذو نطاق ضيق أو مستشعر ذو نطاق واسع. استُعمِل النّوع الأوّل في أواخر 1970 وبدايات 1980، أمّا النّوع الثّاني والثّالث فبدأ استخدامه في السنوات الماضية ولكنّه أغلى وبدقّة أعلى. النوع الأول معظمه يمتلك 10 صمامات ثنائية باعثة للضوء، ويتواجد هذا النوع في غلاف دائري قطره يكون 2-1/16 بوصة و2-5/8 بوصة. أما النوع الثاني فإما يتواجد منفرداً أو في غلاف، ويكون أكثر دقة حيث أنه يخبرنا بنسبة الهواء إلى الوقود الفعلية. يستخدم النوع الثالث إلكترونيات أكثر دقة لذلك تكلفته عالية. (ar)
  • An air-fuel ratio meter monitors the air–fuel ratio of an internal combustion engine. Also called air–fuel ratio gauge, air–fuel meter, or air–fuel gauge, it reads the voltage output of an oxygen sensor, sometimes also called AFR sensor or lambda sensor. The original narrow-band oxygen sensors became factory installed standard in the late 1970s and early 1980s. In recent years a newer and much more accurate wide-band sensor, though more expensive, has become available. Most stand-alone narrow-band meters have 10 LEDs and some have more. Also common, narrow band meters in round housings with the standard mounting 52 and 67 mm (2+1⁄16 and 2+5⁄8 in) diameters, as other types of car 'gauges'. These usually have 10 or 20 LEDs. Analogue 'needle' style gauges are also available. As stated above, there are wide-band meters that stand alone or are mounted in housings. Nearly all of these show the air–fuel ratio on a numeric display since the wide-band sensors provide a much more accurate reading. As wide-band sensors use more accurate electronics, these meters are more expensive. (en)
  • Sebuah air–fuel ratio meter memonitor rasio udara-bahan bakar dari mesin pembakaran internal. Juga disebut air–fuel ratio gauge, air–fuel meter, atau air–fuel gauge. Bunyinya tegangan output dari sensor oksigen, kadang-kadang juga disebut sensor lambda, entah itu dari sebuah band sempit atau sensor oksigen pita lebar. (in)
  • 空燃比計は、内燃機関において燃料と空気の混合度を示す空燃比を指示する計器、測定器である。 以下では特に、自動車、オートバイの空燃比計に関して記述する。 (ja)
  • O hallmeter ou indicador de mistura é um instrumento que permite o monitoramento da proporção oxigênio/combustível na queima do motor. O funcionamento desse instrumento é simples: ele recebe informações da sonda lambda (correntes elétricas que variam de aproximadamente 100 a 900 mV) que acende os nele existentes. Geralmente, o indicador de mistura tem uma escala com três classificações: rica, ideal e pobre (rich, stoich e lean). Cada escala consiste em cerca de seis LEDs, dependendo da marca do instrumento. Há também indicadores de mistura digitais, que mostram a tensão em números num visor de LCD. O aparelho é usado com frequência em carros preparados (turbo, aspirado e nitro), pois essas preparações envolvem modificações na relação da mistura, que deve ser monitorada com frequência para evitar perda de desempenho, aumento do consumo e até a quebra do motor. Se a proporção da mistura estiver errada, seja ela rica demais ou pobre, o motor será altamente prejudicado. A mistura rica causa grande emissão de poluentes, já que não há oxigênio suficiente para queimar completamente o combustível e isso gera a formação do indesejável CO, no lugar do CO2. Uma mistura pobre causa sobreaquecimento, elevando o risco de quebra do motor. Embora não seja muito utilizado em carros sem modificações no motor, pode ser útil para diagnosticar problemas antes de encaminhar ao mecânico. Se não se tem um hallmeter, pode-se usar um multímetro. Lembra-se, nesse caso, que a sonda lambda envia sinais em forma de energia elétrica (corrente contínua), então, se se ligar um dos fios do multímetro no fio da sonda e o outro no bloco do motor (terra), ele estará fazendo o papel do hallmeter, apenas abrindo mão da facilidade da visualização através de leds. Atualmente no mercado, existem várias fabricantes de instrumentos: , , , , entre outras. (pt)
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  • Sebuah air–fuel ratio meter memonitor rasio udara-bahan bakar dari mesin pembakaran internal. Juga disebut air–fuel ratio gauge, air–fuel meter, atau air–fuel gauge. Bunyinya tegangan output dari sensor oksigen, kadang-kadang juga disebut sensor lambda, entah itu dari sebuah band sempit atau sensor oksigen pita lebar. (in)
  • 空燃比計は、内燃機関において燃料と空気の混合度を示す空燃比を指示する計器、測定器である。 以下では特に、自動車、オートバイの空燃比計に関して記述する。 (ja)
  • يقوم مقياس نسبة الهواء إلى الوقود بقياس نسبة الهواء إلى الوقود في محركات الاحتراق الداخلي. حيث يقوم بقراءة الجهد الخارج من ، ويٌسمى أحياناً مستشعر لامدا، ويكون الجهد إما من مستشعر ذو نطاق ضيق أو مستشعر ذو نطاق واسع. استُعمِل النّوع الأوّل في أواخر 1970 وبدايات 1980، أمّا النّوع الثّاني والثّالث فبدأ استخدامه في السنوات الماضية ولكنّه أغلى وبدقّة أعلى. النوع الأول معظمه يمتلك 10 صمامات ثنائية باعثة للضوء، ويتواجد هذا النوع في غلاف دائري قطره يكون 2-1/16 بوصة و2-5/8 بوصة. (ar)
  • An air-fuel ratio meter monitors the air–fuel ratio of an internal combustion engine. Also called air–fuel ratio gauge, air–fuel meter, or air–fuel gauge, it reads the voltage output of an oxygen sensor, sometimes also called AFR sensor or lambda sensor. The original narrow-band oxygen sensors became factory installed standard in the late 1970s and early 1980s. In recent years a newer and much more accurate wide-band sensor, though more expensive, has become available. (en)
  • O hallmeter ou indicador de mistura é um instrumento que permite o monitoramento da proporção oxigênio/combustível na queima do motor. O funcionamento desse instrumento é simples: ele recebe informações da sonda lambda (correntes elétricas que variam de aproximadamente 100 a 900 mV) que acende os nele existentes. O aparelho é usado com frequência em carros preparados (turbo, aspirado e nitro), pois essas preparações envolvem modificações na relação da mistura, que deve ser monitorada com frequência para evitar perda de desempenho, aumento do consumo e até a quebra do motor. (pt)
rdfs:label
  • مقياس نسبة الهواء إلى الوقود (ar)
  • Air–fuel ratio meter (en)
  • Air–fuel ratio meter (in)
  • 空燃比計 (ja)
  • Hallmeter (pt)
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