AFR Calculator

For additional information please review Automotive Chip Tuning Electronic Control Unit Factors and Offsets using proper Abbreviations and Bosch Map Acronyms across Map Layout

engine volume		cm³
number of cylinders
engine speed		rpm

MAP		mbar
air humidity		%
IAT		°C

IQ		mg/str


IAT	313.15	°K

dry AFR	19.61	without losses
humid AFR	19.53	without losses
corrected dry AFR	14.71	VE corrected
corrected humid AFR	14.65	VE corrected
dry Lambda	1.01	VE corrected
humid Lambda	1.01	VE corrected

volume per cylinder	492	cm³

engine air flow	4.43	m³/min (without losses)
MAF	211.81	g/s (without losses)
corrected MAF	158.86	g/s (VE corrected)
MAF	28.02	lb/min (without losses)
corrected MAF	21.01	lb/min (VE corrected)

dry air density	2.870	mg/cm³
humid air density	2.858	mg/cm³

dry air mass in cylinder	1412	mg (without losses)
humid air mass in cylinder	1406	mg (without losses)
estimated engine VE	75.00	%
dry air mass in cylinder	1059	mg (VE corrected)
humid air mass in cylinder	1054	mg (VE corrected)

AFR Calculator

Lambda	Gas AFR	E85 AFR	E100 AFR	Methanol AFR	Diesel AFR
0.50	7.35	4.88	4.49	3.23	7.25
0.51	7.50	4.98	4.58	3.29	7.40
0.52	7.64	5.08	4.67	3.36	7.54
0.53	7.79	5.17	4.76	3.42	7.69
0.54	7.94	5.27	4.85	3.49	7.83
0.55	8.09	5.37	4.94	3.55	7.98
0.56	8.23	5.47	5.03	3.62	8.12
0.57	8.38	5.56	5.12	3.68	8.27
0.58	8.53	5.66	5.21	3.74	8.41
0.59	8.67	5.76	5.30	3.81	8.56
0.60	8.82	5.86	5.39	3.87	8.70
0.61	8.97	5.95	5.48	3.94	8.85
0.62	9.11	6.05	5.57	4.00	8.99
0.63	9.26	6.15	5.66	4.07	9.14
0.64	9.41	6.25	5.75	4.13	9.28
0.65	9.56	6.34	5.84	4.20	9.43
0.66	9.70	6.44	5.93	4.26	9.57
0.67	9.85	6.54	6.02	4.33	9.72
0.68	10.00	6.64	6.11	4.39	9.86
0.69	10.14	6.73	6.20	4.46	10.01
0.70	10.29	6.83	6.29	4.52	10.15
0.71	10.44	6.93	6.38	4.58	10.30
0.72	10.58	7.03	6.47	4.65	10.44
0.73	10.73	7.12	6.56	4.71	10.59
0.74	10.88	7.22	6.65	4.78	10.73
0.75	11.03	7.32	6.74	4.84	10.88
0.76	11.17	7.42	6.83	4.91	11.02
0.77	11.32	7.52	6.92	4.97	11.17
0.78	11.47	7.61	7.01	5.04	11.31
0.79	11.61	7.71	7.10	5.10	11.46
0.80	11.76	7.81	7.19	5.17	11.60
0.81	11.91	7.91	7.27	5.23	11.75
0.82	12.05	8.00	7.36	5.29	11.89
0.83	12.20	8.10	7.45	5.36	12.04
0.84	12.35	8.20	7.54	5.42	12.18
0.85	12.50	8.30	7.63	5.49	12.33
0.86	12.64	8.39	7.72	5.55	12.47
0.87	12.79	8.49	7.81	5.62	12.62
0.88	12.94	8.59	7.90	5.68	12.76
0.89	13.08	8.69	7.99	5.75	12.91
0.90	13.23	8.78	8.08	5.81	13.05
0.91	13.38	8.88	8.17	5.88	13.20
0.92	13.52	8.98	8.26	5.94	13.34
0.93	13.67	9.08	8.35	6.00	13.49
0.94	13.82	9.17	8.44	6.07	13.63
0.95	13.97	9.27	8.53	6.13	13.78
0.96	14.11	9.37	8.62	6.20	13.92
0.97	14.26	9.47	8.71	6.26	14.07
0.98	14.41	9.56	8.80	6.33	14.21
0.99	14.55	9.66	8.89	6.39	14.36
1.00	14.70	9.76	8.98	6.46	14.50
1.01	14.85	9.86	9.07	6.52	14.65
1.02	14.99	9.96	9.16	6.59	14.79
1.03	15.14	10.05	9.25	6.65	14.94
1.04	15.29	10.15	9.34	6.71	15.08
1.05	15.44	10.25	9.43	6.78	15.23
1.06	15.58	10.35	9.52	6.84	15.37
1.07	15.73	10.44	9.61	6.91	15.52
1.08	15.88	10.54	9.70	6.97	15.66
1.09	16.02	10.64	9.79	7.04	15.81
1.10	16.17	10.74	9.88	7.10	15.95
1.11	16.32	10.83	9.97	7.17	16.10
1.12	16.46	10.93	10.06	7.23	16.24
1.13	16.61	11.03	10.15	7.30	16.39
1.14	16.76	11.13	10.24	7.36	16.53
1.15	16.91	11.22	10.33	7.43	16.68
1.16	17.05	11.32	10.42	7.49	16.82
1.17	17.20	11.42	10.51	7.55	16.97
1.18	17.35	11.52	10.60	7.62	17.11
1.19	17.49	11.61	10.69	7.68	17.26
1.20	17.64	11.71	10.78	7.75	17.40

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