Use of biodegradable hydrocarbon fluids in electric vehicles
The invention is the use, in an electric vehicle, of a fluid having a boiling point in the range of from 200° C. to 400° C. and a boiling range below 80° C., said fluid comprising more than 95% by weight isoparaffins and less than 3% by weight of naphthens, a biocarbon content of at least 95% by weight, containing less than 100 ppm by weight aromatics.
1. Method for cooling components of an electric or a hybrid vehicle, said method comprising:
using a fluid having a boiling point in the range of from 200° C. to 400° C. and a boiling range below 80° C., said fluid comprising more than 95% by weight isoparaffins and less than 3% by weight of naphthens, a biocarbon content of at least 95% by weight, containing less than 100 ppm by weight aromatics;
wherein said components of the electric or hybrid vehicle comprise at least one of a motor, power electronics, a rotor of the motor, a stator of the motor, a battery, or a combination thereof.
2. Method for lubricating components of an electric or a hybrid vehicle, said method comprising:
using a fluid having a boiling point in the range of from 200° C. to 400° C. and a boiling range below 80° C., said fluid comprising more than 95% by weight isoparaffins and less than 3% by weight of naphthens, a biocarbon content of at least 95% by weight, containing less than 100 ppm by weight aromatics;
wherein said components of the electric or hybrid vehicle comprise at least one of a motor, bearings between a rotor and a stator of the motor, a reducer of the motor, a transmission, or a combination thereof.
3. Method of claim 1 , comprising:
using the fluid in the electric vehicle.
4. Method of claim 2 , comprising:
using the fluid in the electric vehicle.
5. Method of claim 1 , comprising:
using the fluid for cooling the battery.
6. Method of claim 1 , comprising:
using the fluid for cooling and lubricating the motor.
7. Method of claim 1 , comprising:
using the fluid for cooling the motor and for lubricating the transmission.
8. Method of claim 1 , wherein the fluid has a boiling point in the range of from 220° C. to 340° C.
9. Method of claim 1 , wherein the boiling range of the fluid is 240° C.-275° C. or 250° C.-295° C. or 285° C.-335° C.
10. Method of claim 1 , wherein the fluid contains less than 50 ppm by weight aromatics.
11. Method of claim 1 , wherein the fluid contains less than 1% by weight of naphthens by weight.
12. Method of claim 1 , wherein the fluid contains less than 5 ppm sulphur.
13. Method of claim 1 , wherein the fluid has a biodegradability at 28 days of at least 60%, as measured according to the OECD 306 standard.
14. Method of claim 1 , wherein the fluid contains less than 50 ppm by weight aromatics and less than 500 ppm by weight of naphthens.
15. Method of claim 1 , wherein the fluid contains less than 20 ppm by weight aromatics and less than 50 ppm by weight of naphthens.