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Air–fuel equivalence ratio, λ (lambda), is the ratio of actual AFR to stoichiometry for a given mixture. λ = 1.0 is at stoichiometry, rich mixtures λ < 1.0, and lean mixtures λ > 1.0. There is a direct relationship between λ and AFR. To calculate AFR from a given λ, multiply the measured λ by the stoichiometric AFR for that fuel.
An oxygen sensor (or lambda sensor, where lambda refers to air–fuel equivalence ratio, usually denoted by λ) or probe or sond, is an electronic device that measures the proportion of oxygen (O 2) in the gas or liquid being analyzed. [1] It was developed by Robert Bosch GmbH during the late 1960s under the supervision of Günter Bauman. [1]
Lambda II engine at Paris Motor Show 2018. It is a version of Lambda II GDi 3.3 engine with two turbochargers. [2] It produces 370 PS (272 kW; 365 hp) at 6,000 rpm and 52 kg⋅m (510 N⋅m; 376 lb⋅ft) of torque between 1,300 and 4,500 rpm. Applications: 2017–present Genesis G70; 2016–2020 Genesis G80 (DH) 2015–2021 Genesis G90 (HI)
AB: Air-Fuel Equivalence Ratio CD: Current 36: 54: 4 Oxygen Sensor 3 AB: Air-Fuel Equivalence Ratio CD: Current 37: 55: 4 Oxygen Sensor 4 AB: Air-Fuel Equivalence Ratio CD: Current 38: 56: 4 Oxygen Sensor 5 AB: Air-Fuel Equivalence Ratio CD: Current 39: 57: 4 Oxygen Sensor 6 AB: Air-Fuel Equivalence Ratio
- Expressed as mass ratio: 14.7 kg of air per 1 kg. of fuel. - Expressed as volume ratio: 10,000 liters of air per 1 liter of fuel. With this relationship theoretically a complete combustion of gasoline is achieved and greenhouse gas emissions would be minimal. The coefficient is defined as Lambda coefficient. If Lambda > 1 = lean mixture ...
The heart of the Mitsubishi's MVV system is the linear air–fuel ratio exhaust gas oxygen sensor. Compared with standard oxygen sensors, which essentially are on-off switches set to a single air/fuel ratio, the lean oxygen sensor is more of a measurement device covering the air/fuel ratio range from about 15:1 to 26:1. [19]
Dimensionless numbers (or characteristic numbers) have an important role in analyzing the behavior of fluids and their flow as well as in other transport phenomena. [1] They include the Reynolds and the Mach numbers, which describe as ratios the relative magnitude of fluid and physical system characteristics, such as density, viscosity, speed of sound, and flow speed.
Lambda denotes the oxygen sensor in a vehicle that measures the air-to-fuel ratio in the exhaust gases of an internal-combustion engine. [23] A Lambda 4S solid-fuel rocket was used to launch Japan's first orbital satellite in 1970. [24]