Siemens Vdo Automotive Corporation

Siemens Automotive Corporation

Continental Automotive Systems Us, Inc.

Other

Hornby, Michael

Cole, David

Graupner, Olaf

Wildeson, Ray

Imoehl, William

Van Vuuren, Willem Nicolaas

Bugos, Stephen

Ray Wildeson

Isabelle McKenzie

Daniel Stahlmann

David P Wieczorek

Gordon H Wyant

Michael Joseph Hornby

William James Imoehl

Jack R Lorraine

Bryan C Hall

Stephen C Bugos

Debora E Nally

Willem Nicolaas Van Vuuren

Christoph Hamann

David Cole

William Nicolaas Van Vuuren

Steve Bugos

William Imoehl

Michael Hornby

A reductant delivery unit () is provided for selective catalytic reduction (SCR) after-treatment for vehicles. The unit includes a solenoid fluid injector () constructed and arranged to be associated with an exhaust gas flow path () upstream of a SCR catalytic converter (). The fluid injector has a fluid inlet () and a fluid outlet () with the fluid inlet being constructed and arranged to receive a source of urea solution and the fluid outlet being constructed and arranged to communicate directly with the exhaust flow path so as to control injection of urea solution into the exhaust gas flow path. An interface () is constructed and arranged to couple the fluid injector to the gas flow path. The interface defines a thermal barrier constructed and arranged to decoupled a body of the injector from exposure to heat in the exhaust gas flow path.

Reductant delivery unit for selective catalytic reduction

A sensor device () for making at least one determination regarding a selected characteristic of a fluid includes a support post () that is adapted to be exposed to the fluid. A capacitor has electrodes () that are supported near one end of the support post (). A housing () for containing electronics () is supported near an opposite end of the support post (). In a disclosed arrangement, a level sensing element such as a conductive polymer rod is at least partially supported by the support post (). A disclosed assembly procedure includes overmolding portions of the device onto other portions to provide stable and secure connections between the various portions of the assembly.

Sensor device for determining a fluid property

A fluid sensor arrangement () includes a sleeve () that is adapted to be placed within a container (). A plurality of conductors () and a channel member () within the sleeve cooperate to provide a measurement of conductivity of the fluid within the sleeve (). The conductivity measurement provides an indication of a level of fluid within the container (). A disclosed example includes a non-conductive channel member () having an opening or a channel () for directing selected portions of a conductivity field within the sleeve () between the conductors () for making the conductivity determinations.

Fluid level sensor

A fluid quality sensor () includes a first electrode () that has a fluid passageway () that is adapted to be placed in line with at least one fluid conduit (). A housing () is supported on the first electrode () in one example by overmolding a portion () of the housing onto a portion of the first electrode (). A second electrode () is supported within the fluid passageway () and electrically isolated from the first electrode (). The first electrode () and the second electrode () operate as a capacitor for making fluid quality determinations.

In line fluid quality sensor

A spring clip includes a first portion including a bridge connecting spaced elongate fingers adapted to straddle a body portion of the fuel injector and be receivable in a receiving portion of a fuel rail cup. The elongate fingers include a reverse bend at a midpoint therealong and terminate in a bridging portion. The bent elongate fingers define finger segments on each side of the reverse bend. The finger segments diverge from the reverse bend part way toward the bridge and bridging portions and converge thereafter to form generally diamond shaped spring elements. A second portion of a generally planar shape having spaced legs engages slots in the injector body. The second portion includes a wall portion extending generally perpendicular to the spaced legs and connects with the bridging portion. When the injector is mounted in the fuel rail cup, the legs are received in slots in the injector body and the elongate finger segments are compressed between the fuel rail cup and the injector body. The fuel injector is clamped between the legs and the fingers with a force toward the head of the engine by the compressive load of the finger segments. The clip is yieldable to avoid overloading the injector during installation in the engine.

High pressure injector clip

A method and fuel injector for precision setting of valve lift, using a valve body shell (42) telescoped over the valve body (60), the shell (42) having a nonmagnetic extension welded to the valve body shell (42) and to the end of an inlet tube (16) providing a solenoid pole piece, with the valve body (60) and shell (42) adjusted to set the valve lift and thereafter welded together. Interference fit portions stabilize the adjusted position of the members preparatory to welding, and displaced material in a locking groove (102) creates a mechanical interlock between the valve body (60) and shell (42) to stabilize the members in their adjusted positions after welding so that the set lift is minimally affected by weld shrinkage. An external radial groove 18 allows radial bending as the weld cools to minimize axial shift of the parts and thus the effect on the set valve lift.

Method and fuel injector enabling precision setting of valve lift

A non-ferromagnetic member is disposed between, and joined to, a ferromagnetic fuel inlet tube and a ferromagnetic valve body structure. The valve body structure is fitted to the non-ferromagnetic member by telescoping the upper axial end of the valve body structure over the O.D. of the lower end of the non-ferromagnetic member and by guiding the armature on a cylindrical guide surface in a bore of the valve body structure at a location that is axially below the axial location where the upper end of the valve body structure and the lower end of the non-ferromagnetic member telescopically engage. For given part tolerances and given tolerances in tooling that is used to assemble the parts, closer tolerance in parallelism of the impacting armature end surface to the impacted fuel inlet tube end surface is obtained.

Fuel injector having improved parallelism of impacting armature surface

Growing community of inventors

Yorktown, VA, United States of America

Ray Wildeson