公开(公告)号：DE3716142A1

公开(公告)日：1987-11-26

申请号：DE3716142

申请日：1987-05-14

Applicant: RAYCHEM CORP

Inventor： MATTHIESEN MARTIN ,  SMALL MICHELE

IPC: B01D35/06 ,  B01D35/18 ,  F02B3/06 ,  F02M31/125 ,  F02M37/22 ,  H01C1/14 ,  H01C7/02 ,  F02M31/12 ,  B01D27/00 ,  H05B3/10 ,  H05B3/82

Abstract: Diesel fuel is heated and filtered after it has been pumped from a tank where it was stored at a temp. below its turbidity index. The fuel is then heated above this index by thermal contact with a laminar heater with two metal foil electrodes and a laminar resistor, comprising a conductive polymer, pref. PVDF with a PTC characteristic, which is sandwiched between the electrodes. The fuel is finally filtered. Pref. the filter has a heater section and a filter section, with a seal between them. The filter is conventional, with an inlet and outlet and with the filter element near the bottom. The heater has an inlet and an outlet, screwed to outlet. The heater proper has a PVDF element between metal electrodes, held by an insulator. A terminal leads via a thermostat to the battery of the vehicle. The metal washer is earthed.

公开(公告)号：IT1204616B

公开(公告)日：1989-03-10

申请号：IT2052787

申请日：1987-05-14

Applicant: RAYCHEM CORP

Inventor： MATTHIESEN MARTIN ,  SMALL MICHELE

IPC: B01D35/06 ,  B01D35/18 ,  F02B3/06 ,  F02M31/125 ,  F02M37/22 ,  H01C1/14 ,  H01C7/02 ,  F02M

Abstract: Diesel fuel is heated prior to filtration by passing it in thermal contact with a laminar heater immersed in the fuel. The heater has a resistance at room temperature of 0.30 to 0.75 ohm and comprises a PTC conductive polymer resistive heating element sandwiched between equispaced imperforate metal foil electrodes, particularly electrodeposited foil electrodes, coextensive with resistive heating element. The conductive polymer has a resistivity at room temperature of 20 to 2000 ohm - cm. The resistive element has a cross-sectional area in a plane parallel to the electrodes of 3 to 10 square inches and the electrodes have a microrough surface in direct physical contact with the conductive polymer.

公开(公告)号：FR2598749A1

公开(公告)日：1987-11-20

申请号：FR8706839

申请日：1987-05-15

Applicant: RAYCHEM CORP

Inventor： MATTHIESEN MARTIN ,  SMALL MICHELE

IPC: B01D35/06 ,  B01D35/18 ,  F02B3/06 ,  F02M31/125 ,  F02M37/22 ,  H01C1/14 ,  H01C7/02 ,  F02M31/12

Abstract: The invention relates to a method and device for heating and filtering fuel for a diesel engine. … In the method, use is made of a laminar electric heater 4 formed from a conducting polymer in order to heat fuel for a diesel engine before it is filtered; the heater comprises a resistive heating element 41 made from a conductive polymer with a positive temperature coefficient which is interposed between electrodes 42, 43 in the shape of metal leaves, especially leaves which have been deposited electrolytically; after having been heated in the chamber 1 containing the heater 4, the fuel passes into a filtration chamber 2 before being piped to the diesel engine. … Application to vehicles with diesel engines. … …