Page 248 - 05. Subyek Teknik Mesin - Automobile Mechanical and Electrical Systems Automotive Technology Vehicle Maintenance and Repair (Vehicle Maintenance Repr Nv2) by Tom Denton

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232 Automobile mechanical and electrical systems

Figure 2.306 NASCAR fl ex-fuel. (Source: Ford Media)

Figure 2.307 E85 vehicle. (Source: Ford Media)

Disadvantages:
can only be used in fl exible fuel vehicles
●
lower energy content, resulting in fewer miles per gallon
●
limited availability.
●
2.5.4.2 Biodiesel
Biodiesel is a form of diesel fuel manufactured from vegetable oils, animal fats
Key fact
or recycled restaurant oils. It is safe and biodegradable, and produces fewer air
Biodiesel is a form of diesel fuel pollutants than petroleum-based diesel. It can be used in its pure form (B100)
manufactured from vegetable oils, or blended with petroleum diesel. Common blends include B2 (2% biodiesel),
animal fats or recycled restaurant
B5 and B20. B2 and B5 can be used safely in most diesel engines (Fig. 2.308).
oils.
However, most vehicle manufacturers do not recommend using blends greater
than B5, and engine damage caused by higher blends is not covered by some
manufacturer warranties.
Advantages:
can be used in most diesel engines, especially newer ones
●
produces fewer air pollutants (other than NO ) and greenhouse gases
●
x
biodegradable
●