Peugeot Partner 1.9D, year 1999
The car was originally converted in january 2007 by a single tank system, enabling it to run on Pure Plant Oil(PPO) or the fluent part of waste vegetable oil(WVO). But a large proportion of collected WVO is very viscous or even solid at ambient temperature - more so in the winter time. To use this part of the WVO it is necessary to keep the WVO in a separate fuel tank, and to heat the fuel tank, fuel hoses and the solenoid valves. Such a 2-tank system was installed on this car in February 2009. The car drives in the North of Sweden.

Components for the 2-tank system for solid or semi solid WVO:
- Heat exchanger
- coolant heated fuel filter for WVO
- Hose In Hose system
- 2  solenoid valves
- extra fuel tank with coolant heating
- switch, wires and time delay relay.

Function of the 2-tank system:
1) The engine is started on diesel, or PPO if converted with single tank system
2) While the engine heats up, the fuel is heated, and the injection pump and solenoids heats up as well. At the same time coolant flows through the WVO fuel filter, the HIH system and the WVO tank. 
3) When the engine reach working temperature the solenoids are switched to the WVO tank.
4) Before stopping the engine for letting it cool down, the solenoids must be switched back to the diesel/PPO tank. Switching the return solenoid is delayed in order purge most of the WVO to the WVO tank.

Heat exchanger Solenoid lead Solenoid return WVO fuel filter Diesel/PPO fuel filter Connection of the HIH system
Heat exchanger and Solenoids are on the top of the photo. The WVO fuel filter is to the left, and the diesel/PPO filter to the right.
(Point at the components to get hints)

WVO fuel filter, coolant heated HIH - Hose In Hose Coolant supply for the HIH WVO from the tank Coolant supply for the WVO fuel filter Coolant return from the WVO fuel filter Electrical fuel heater remains from the original single tank system
Coolant heated WVO fuel filter. The WVO flows though our HIH system from the tank to the fuel filter.
(Point at the components to get hints)


Return solenoid up and the return HIH in the middle, behind the eninge


The WVO tank has been made from a 65 litres oil drum. The coolant from the HIH system flows through a coil in the tank.


The WVO was too solid to flow into the tank, even the canister had been staying in the boiler room all night . . .
 


. . . therefore a small part of it was heated . . .


. . .and mixed with the solid part remaining in the canister. On the photo is Peter, the owner of the car.


The solid WVO is still resting at the bottom of the canister with the hot fluent part on the top.


After shaking the canister the high viscous mixture could flow into the tank.

 

Photo´s of the original 1-tank conversion for PPO.

 

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