(19)
(11) EP 0 922 852 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.06.2000 Bulletin 2000/23

(43) Date of publication A2:
16.06.1999 Bulletin 1999/24

(21) Application number: 98309693.4

(22) Date of filing: 25.11.1998
(51) International Patent Classification (IPC)7: F02M 61/14, F02M 55/00, F02M 55/02
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 09.12.1997 GB 9726090

(71) Applicant: Lucas Industries Limited
London W1Y 4DJ (GB)

(72) Inventors:
  • Parker, Stephen Michael
    Redhill, Surrey RH1 4DN (GB)
  • Colingborn, Peter Alban George
    Rainham, Gillingham, Kent ME8 8RX (GB)
  • Allen, Peter David
    Kennington, Ashford, Kent (GB)

(74) Representative: Bailey, Richard Alan et al
Marks & Clerk, Alpha Tower, Suffolk Street Queensway
Birmingham B1 1TT
Birmingham B1 1TT (GB)

   


(54) Fuel system


(57) A fuel system is described which comprises an injector (12) mounted in a bore of an engine cylinder head (10), a high pressure pipe (30) arranged to supply fuel to the injector (12) from a common rail (32), an end region of the pipe (30) adjacent the injector (12) extending in a direction substantially perpendicular to an axis of the injector (12), and a clamp member (38) arranged to clamp the end region of pipe (30) to the injector (12), the clamp member (38) including a drilling (40) defining a return fuel passage extending between the injector (12) and a backleak channel (44) provided in the cylinder head (10) or a cam box wall or cover (22) of the engine. The injector (12) may be modified to define a flow passage (40) which communicates directly with the backleak channel (44), thus avoiding providing a drilling in the clamp member (38).






Search report