Cummins Engine Company, Inc.

Cummins Inc.

Cummins Filtration Ip, Inc.

Cummins Emission Solutions Inc.

Fleetguard, Inc.

Laszlo D Tikk

Yul J Tarr

John T Carroll, Iii

Donald J Benson

Lester L Peters

David L Buchanan

Taner Tuken

John D Crofts

Julius P Perr

George L Muntean

David Paul Genter

Leon A LaPointe

James A Zigan

Edward D Smith

Daniel J Mohr

Harry L Wilson

Bela Doszpoly

Wayne A Eckerle

Bryan W Swank

Amarjit S Ghuman

Benjamin M Yen

Mustahsen Gull

Bai Mao Yen

Byron J Bunker

Ed Morris

Daniel G Burns

Ivar L Johnson

John Toksoy

Chris L Sanger

Leonard Hummel

David W Padgett

Andrew G Stiles

An internal combustion engine is provided including an injector having an injector body including a nozzle assembly having an annular outer surface. A cylinder head includes an injector mounting bore to receive the injector, and a lower sealing portion. The engine also includes an engine coolant passage formed in the cylinder head to receive engine coolant to remove heat from the cylinder head. The engine coolant passage opens into, and is fluidly connected to, the mounting bore to cause coolant in the coolant passage to contact the annular outer surface of the nozzle assembly. A lower seal is positioned between the lower sealing portion and the nozzle assembly to form a fluid seal.

Engine with injector mounting and cooling arrangement

A pump component is removed from a port of a suction-side fluid cavity of a high-pressure fluid pump. The pump component performs a pump function for the high-pressure fluid pump. A primary coupler connects to the port. The pump component connects to the primary coupler. A diverter fluid passage diverts a low-pressure fluid from the primary coupler to an auxiliary fluid delivery system. The primary coupler communicates the low-pressure fluid through the pump component and primary coupler to the port.

Apparatus, system, and method for diverting fluid

An apparatus is disclosed including a first end defining an inner passage along a first inner surface of the first end, where the inner passage has threads structured to receive a spark plug. The apparatus further includes a second end opposite the first end and extending into a combustion chamber of a cylinder, the second end defining a pre-combustion chamber along a second inner surface and threads on an outer surface structured to thread into a spark plug hole in a cylinder head, which may be an enlarged spark plug hole. The second end includes holes that fluidly couple the pre-combustion chamber of the second end with the combustion chamber of the cylinder.

Pre-combustion device for an internal combustion engine

An apparatus, system, and method are disclosed for delivering a dosant with engine exhaust. The apparatus includes a flow-rate regulator disposed downstream from an engine exhaust manifold that operates to control a fraction of exhaust from the engine exhaust manifold. The apparatus also includes a doser disposed downstream of the flow-rate regulator that provisions a supply of dosant to the path of the controlled fraction of exhaust, which atomizes, vaporizes, disperses, mixes with, and/or delivers the dosant.

Apparatus, system, and method for using a fraction of engine exhaust to deliver a dosant

An apparatus, system, and method are disclosed for intermittently delivering fluid. An injector intermittently delivers a first quantity of fluid over a first time interval. In one embodiment, the injector is passively cooled. In a certain embodiment, the injector delivers the first quantity of fluid responsive to a fluid flow measurement of a flow meter. An orifice diverts the first quantity of fluid from a primary fluid supply system over a second time interval without decreasing the supply of fluid to a primary load within a flow rate range while the fluid pressure remains within a pressure range. An accumulator accumulates at the least the first quantity of fluid as a fluid charge with positive energy.

Apparatus, system, and method for intermittently delivering fluid

The high-pressure fluid manifold connection assembly includes a one-piece tube collar with an annular relief cavity that surrounds a high-pressure fluid tube. The tube includes a hole that passes through the tube and which is not aligned with an exit hole in an annular relief cavity of the tube collar.

Fluid manifold connector and fluid manifold assembly

A fuel injection system is disclosed for an internal combustion engine that has multiple combustion chambers and a camshaft which cyclically imparts pressurization energy to and recovers pressurization energy from fuel being supplied to the engine. The fuel injection system includes a plurality of unit injectors, a camshaft linkage which simultaneously reciprocates pressurizing plungers of a set of at least two unit injectors and an interconnecting line which allows selective fluid interconnection between fuel pressurization chambers formed within the unit injectors. The interconnection line allows fluid linkage of the volume of fuel which is simultaneously pressurized and depressurized within the interconnected fuel pressurization chambers of a first set of unit injectors.

Cyclic pressurization including plural pressurization units interconnected for energy storage and recovery

The improved solenoid actuator assembly of the present invention includes a solenoid stator assembly positioned in an actuator housing and a flux dissipation reducing feature which minimizes flux leakage into the housing thereby maximizing the attractive force and minimizing the response time. The flux dissipation reducing feature includes a slot formed in the housing adjacent each outer face of the solenoid stator pole pieces thereby avoiding a metallic housing wall into which leakage may occur. The slots also permit the cross sectional area of the pole pieces to be maximized thereby increasing the available attractive force. The solenoid stator assembly requires only a single housing which functions to directly support the laminate stack assembly without an intermediate housing while also functioning as an injector body component subject to the compressive assembly load of the injector and including high pressure fuel passages. As a result, the present solenoid actuator assembly is compact, inexpensive and functions to optimally maximize attractive forces while reducing response time.

Solenoid actuator assembly

Fuel metering check valve arrangement for a time-pressure controlled

A solenoid actuated valve assembly is provided which achieves accurate control of valve movement while maximizing valve seat life. Specifically, the solenoid actuated flow control valve assembly includes a valve plunger, a solenoid actuator including a coil and an armature, and an armature overtravel feature for permitting continued movement of the armature relative to the valve plunger from an engaged position into a disengaged position when the valve plunger reaches a closed position. The armature overtravel feature includes an overtravel biasing spring for returning the armature from the disengaged position to the engaged position prior to subsequent energization of the actuator coil. As a result, the overtravel feature minimizes the mass impacting the valve seat thereby extending valve seat life while, importantly, avoiding lost motion in the armature during the next actuation cycle thereby minimizing valve response time. The flow control valve also includes an armature protecting feature for minimizing armature wear by preventing the armature from contacting the valve plunger and an armature stop.

Solenoid actuated flow control valve assembly

An effervescent fuel injector, particularly one suitable for diesel and direct injection engine applications, which is capable of injecting, particularly intermittently, an atomized fuel spray with droplets of a size in the range of 5-6 micron SMD without requiring high pressures is achieved in a preferred embodiment effervescent fuel injector of the valve covered orifice (VCO) type having primary and secondary nozzle valves which remain closed when the control valve is not actuated, but which open one or two sets of nozzle orifices depending on fuel volume requirements. A three-way, on-off control valve is used to trigger commencement of the supply of gas via a control valve simultaneously with opening of at least some of the nozzle orifices. Gas and fuel are mixed in a mixing chamber located upstream of the nozzle valves in a manner creating a gas-fuel aeration, and as the aeration is sprayed from the nozzle orifices, the gas expands rapidly breaking the fuel into fine droplets.

Effervescent injector for diesel engines

The improved needle controlled common rail fuel system of the present invention includes split common rails serving respective sets of unit injectors. Each unit injector includes a mechanically actuated plunger reciprocally mounted to cyclically create gradual periods of increasing pressure in the common rail during the advancement stroke of the plunger followed by respective periods of decreasing pressure during the plunger's retraction stroke. The fuel injectors include a pressure control valve for controlling the amount of fuel pressurized by the plunger and a needle valve control device including an injection control valve for creating an injection event during a pumping event by controlling the fuel flow to drain so as to control the fuel pressure forces acting on an injector needle valve element. A flow limiting device is provided to limit the fuel flow from a control volume to drain during an injection event thus reducing parasitic losses while maintaining quick valve closing. In addition, a pressure energy recuperation means is provided which utilizes the pressure of the fuel in each injector's pressure chamber as a result of the pressure energy stored in the fuel to assist in retraction of the injector plunger during each pumping event.

Needle controlled fuel system with cyclic pressure generation

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Columbus, IN, United States of America

Laszlo D Tikk