Fuel injector and motor brake valve mounting arrangement for an internal combustion engine with direct fuel injection

• US 5,730,101 A
• Filed: 12/18/1996
• Issued: 03/24/1998
• Est. Priority Date: 01/09/1996
• Status: Expired due to Term

• Current Assignee: Daimler AG (Mercedes-Benz Group AG)
• Original Assignee: Mercedes-Benz AG (Mercedes-Benz Group AG)
• Inventors: Aupperle, Walter
• Primary Examiner(s): Wolfe, Willis R.
• Assistant Examiner(s): Vo, Hieu T.
• Application Number:
  US08/768,809
• Time in Patent Office: 461 Days
• Field of Search: 123/321, 123/324, 123/320, 123/322, 123/470
• US Class Current: 123/321
• CPC Class Codes: F01L 13/06 for braking
• CPC Class Codes: F02B 2275/14 Direct injection into combustion chamber
• CPC Class Codes: F02B 3/06 with compression ignition compression ignition engines using air or gas for blowing fuel into compressed air in cylinder F02B13/02
• CPC Class Codes: F02M 61/14 Arrangements of injectors with respect to engines; Mounting of injectors
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

In a mounting arrangement for mountings a fuel injector and a motor brake valve structure on the cylinder head of an internal combustion engine, wherein the cylinder head has a mounting cavity receiving the fuel injector and a mounting bore receiving a motor brake valve structure, a clamp arm is disposed with its opposite ends on the fuel injector and the motor brake valve structure and a clamp bolt extends through the center portion of the clamp arm and is screwed into the cylinder head for fixing the fuel injector and the motor brake valve structure in their mounting cavitiy and monting bore.

Claims

1. A mounting arrangement for mounting a fuel injector and a motor brake valve structure on a cylinder head of an internal combustion engine with direct fuel injection, said cylinder head having a mounting cavity receiving said fuel injector and a mounting bore receiving said motor brake valve structure, a clamp arm having opposite ends one disposed on said fuel injector and the other on said motor brake valve structure and a clamp bolt extending through said clamp arm between said fuel injector and said motor brake valve structure and being screwed into said cylinder head for fixing said fuel injector and said motor brake valve structure in position within the respective mounting cavity and mounting bore.

2. An arrangement according to claim 1, wherein said clamp arm is so shaped that, in its installed position, it is in contact at its opposite ends only with said fuel injector and said motor brake structure respectively, and wherein a bore extends through said clamp arm in a center area thereof between said opposite ends with a clamp bolt extending through said bore for forcing said clamp arm onto said fuel injector and said motorbrake valve structure.

3. An arrangement according to claim 1, wherein said clamp arm has centering pins projecting from opposite ends thereof and said fuel injector and said motorbrake valve structure have recesses receiving the respective centering pins.

4. An arrangement according to claim 1, wherein said motor brake valve structure includes a valve with a valve shaft extending into said mounting bore for said motor brake valve structure, a valve spring disposed around said valve shaft and being seated at one end while the other end is in engagement with said valve shaft for holding said motor brake valve in a closed position, a piston movably disposed in said mounting bore and being at one side thereof in contact with said valve shaft and defining at the opposite side thereof a control space, a pressure member disposed in the end of said mounting bore opposite said piston to close said control space and passage means for supplying a fluid under pressure to said control space for moving said piston and opening said valve against the force of said valve spring, said clamp arm holding down said pressure member for sealing said control space.

5. An arrangement according to claim 4, wherein said pressure member includes a neck which extends into said bore and a seal ring extends around said neck to seal said pressure member in said bore.