Lambda (λ) is the ratio of actual air-fuel ratio to the stoichiometric air-fuel ratio.
λ = 1 is perfect stoichiometry,
λ < 1 is rich,
λ > 1 is lean.
Engine management systems constantly target λ = 1 for optimal catalyst performance.
Given actual AFR and stoichiometric AFR (AFR_s), compute lambda.
Solve

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Chuguang Pan Henry Chayenna Digvijay

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