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Electric Fuel Pumps for universal applications

Pierburg | Motorservice
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Information on the product

There are fuel pumps for universal use. Which can be used on veteran cars? Are there pre-feeder pumps that can be used on both diesel and petrol engines? And which models can be used as additional pumps for tuning and racing applications? Find out what pump types are available and where they are used here. 

Vehicle/application Product Pierburg No.
See catalogue, TecDoc CD,
Motorservice App or
catalog.ms-motorservice.com
Electric fuel pump (E1F) 7.21440.51.0/.53.0/.63.0/.68.0/.78.0
(E1S) 7.21088.62.0
(E2T) 7.21287.53.0; 7.21538.50.0; 7.21565.70.0/.71.0
(E3T) 7.21659.53.0/.70.0/.72.0
(E3L) 7.00228.51.0; 7.22156.50.0/.60.0; 7.50012.50.0; 7.50051.60.0;
7.28242.01.0

Many of our customer enquiries are related to the technical data for our fuel pumps for small series or special applications. The following selection of pumps for universal use is intended as a decision-making aid for finding the suitable pump for the relevant requirements.

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These pumps are a tried and tested solution for many applications:

  • as a replacement for mechanical fuel pumps where the original pump is no longer available (old/young-timers)
  • as a fuel pre-pump for diesel engines or petrol engines
  • as a temporary solution for repairs where a special replacement is not available
  • as an additional pump which is additionally switched on depending on demand (failure of the main fuelpump)
  • as a refilling or supply pump in refilling systems, additional tanks or heating systems
  • as an additional pump for tuning and racing applications

MODELS

In the case of today’s modern designs of electric fuel pumps, the pumping stage is seated directly on the shaft of the electric motor. The fuel passes through the fuel pump thereby simultaneously cooling and “lubricating” it.

Advantages:

  • Fewer moving parts
  • Compact design
  • Small outside dimensions

Depending on the way in which the fuel pump is accommodated in the vehicle, a difference is made between in-tank and in-line pumps. For the pumping stage there exist different designs. A rough differentiation is made between flow pumps and positive displacement pumps.

FLOW PUMPS

In the case of flow pumps, the fuel is moved due to the centrifugal force of a rotor. Such pumps are capable of producing lower pressures only (0.2 to 3 bar) and are used either as the pre-stage in a two-stage pump, respectively as a pre-stage pump. The fuel passes through the flow pump without the need for flaps and valves. For this reason, during standstill of the pump, the fuel may potentially flow backwards through the flow pump. Flow pumps are not self-priming, i.e. they must always be placed below the liquid level within the fuel tank (maximum suction height 0 mm). Side channel pumps belong to the category of the flow pumps.

01 Electric fuel pump 02 Motor model (pumps in mm)     1 = 38 mm     2 = 43 mm     3 = 43 mm performance boosted 03 Main stage 04 Pre-stage| Pierburg | Motorservice
01 Electric fuel pump 02 Motor model (pumps in mm) 1 = 38 mm 2 = 43 mm 3 = 43 mm performance boosted 03 Main stage 04 Pre-stage

POSITIVE DISPLACEMENT PUMPS

In positive displacement pumps, the fuel is pumped through sealed-off volumes. Such pumps are used in the case of higher system pressures (up to approximately 6.5 bar) that are found in conventional injection systems, for example. Except for design related leaks, the fuel cannot flow through the positive displacement pump in the reverse direction even when the pump is at standstill. Toothed ring pumps, sliding vane pumps, roller vane pumps and screw pumps belong to the category of positive displacement pumps. Positive displacement pumps are self-priming to a very limited extent, i.e. they should be mounted below the liquid level of the fuel tank (maximum suction height 500 mm).

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T - Toothed ring pumping stage

F - Sliding vane pumping stage

L - Screw pumping stage

S - Side channel pumping stage

ATTENTION:

For safety reasons, all work on the fuel system must only be done by suitably qualified personnel.

Summary for a quick overview

Pierburg no. Model Nominal voltage Volumetric flow at System pressure at Current
consumption
Comment
    [V] [l/h] [bar/(psi)] [A]  
7.21440.51.0 E1F 12 95 0.10 (1.5) ≤ 2.0  
7.21440.53.0 E1F 12 100 0.15 (2.2) ≤ 2.05 Also suitable for 6 Volt operation
7.21440.63.0 E1F 24 100 0.15 (2.2) ≤ 1.35  
7.21440.68.0 E1F 24 95 1.00 (14.5) ≤ 3.0  
7.21440.78.0 E1F 12 95 1.00 (14.5) ≤ 4.3  
7.21088.62.0 E1S 12 75 0.24 (3.5) 3 In-tank pump
7.21538.50.0 E2T 12 80 1.2 (17) < 4.5 Including rubber coating
7.21287.53.0 E2T 12 100 3.0 (43.5) < 6  
7.21565.70.0 E2T 12 100 3.0 (43.5) < 6 Including rubber coating
7.21565.71.0 E2T 12 100 3.0 (43.5) < 6 Including rubber coating
7.21659.53.0 E3T 12 110 6.5 (94) < 12 Including rubber coating
7.21659.70.0 E3T 12 110 6.5 (94) < 12 Including rubber coating
7.21659.72.0 E3T 12 110 6.5 (94) < 12 Including rubber coating
7.00228.51.0 E3L 13.5 300-360 5 (72.5) < 16  
7.50012.50.0 E3L 13.5 300-360 5 (72.5) < 16  
7.22156.50.0 E3L 13.5 150-190 …4 (…58) < 9.4  
7.22156.60.0 E3L 13.5 150-190 …4 (…58) < 9.4 Including rubber coating
7.50051.60.0 E3L 12 205-275 1.8 (26) 2.8-6.8  
7.28242.01.0 E3L 13.5 180-260 0.5 (7) < 4.5  

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