| Biodiesel feedstock (100%) | Specifications | Pollutant emissions | References | |||
| NOX | HC | CO | CO2 | |||
| Waste frying palm oil | - | | | | - | [60] |
| Waste frying oil | - | | | | | [61] |
| Jatropha | - | | | | | [62] |
| Rubber seed oil | - | | - | | | [41] |
| Soybean crude oil | - | | - | | - | [63] |
| Karanja | - |
| | | - | [64] |
| Mahua oil | - | | | | | [64] |
| Soybean | 2Ëš before and after the baseline start of injection | | | | - | [65] |
| Jatropha oil | Water pressure constant at 1.5 kg/cm2 | | - | - | | [66] |
| Palm oil | - | | | | - | [67] |
| Rapeseed oil | - | | | | | [68] |
| Waste frying oil | Bore × Stroke: 83 × 100 mm Piston displacement: 2164 c.c. Compression ratio: 21.6:1 | | | | | [69] |
| Sunflower and soybean oil | - | | - | | | [70] |
| Pistache and jatropha oil | The bore of the engine is 95 mm, the stroke is 115 mm, compression ratio 1:17, swept volume 815 cm3, rated power 8.82 kW | | | | - | [71] |
| Palm, cotton and anchovy oil | Bore stroke 80 mm 90 mm. Compression ratio 22.5:1. Rated power 12.5 kW. After treatment None. Power output 9.6 kW. | | | | - | [72] |
| Neem oil | - | | | | - | [73] |
| Pongamiapinnata | - | | | | | [74] |
| Cottonseed oil | - | | | | - | [75]
|
| Fish oil | - | | | | | [76] |
| Jojoba oil | - | | | | - | [54] |
| Rice bran oil | - | | | | | [77] |