Cummins Inc.

Cummins Intellectual Property, Inc.

Cummins Intellectual Properties, Inc.

Mark N Bays

Michael Robert Tidwell

Aleksey Yezerets

Andrew W Osburn

Krishna Kamasamudram

Mihai Chiruta

Douglas Mitchell

Jason Alan Drost

Thomas A Grana

Joseph M Brault

Dale G Gibby

John Carson Wall

Stephen J Charlton

Ian A Package

Jason T Czapka

Upendra Deshmukh

Daniel D Wilheim

Daniel E Aronhalt

A modular electrical interconnect system for coupling electrical components of an electric vehicle. The interconnects include connectors configured to be coupled to one another to form a bus.

Electrical interconnect system for an electric vehicle

An apparatus includes an input module structured to interpret a fuel pressure command indicative of a target fuel pressure within an accumulator and a target fuel injection characteristic, a pump module structured to control a pump assembly to provide fuel to the accumulator to maintain the target fuel pressure within the accumulator, an injector module structured to control a plurality of fuel injectors to inject fuel into an engine based on the target fuel injection characteristic, a pressure module structured to interpret pressure data regarding an actual fuel pressure within the accumulator and to determine a pressure difference between the target fuel pressure and the actual fuel pressure, and a modulation module structured to determine a final fuel injection command responsive to the pressure difference exceeding a first magnitude threshold where the final fuel injection command is based on the pressure difference and the target fuel injection characteristic.

Fuel pressure control for engine fuel systems

An apparatus includes a dosing module structured to suspend dosing in an exhaust aftertreatment system; a selective catalytic reduction (SCR) inlet NOx module structured to interpret SCR inlet NOx data and an SCR inlet temperature; a SCR outlet NOx module structured to interpret SCR outlet NOx data; and a system diagnostic module structured to determine an efficiency of a SCR system based on the SCR inlet and outlet NOx data over a range of SCR temperatures, wherein the system diagnostic module is further structured to determine a state of at least one of a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), and the SCR system based on the SCR efficiency at an elevated SCR temperature range and the SCR efficiency at a relatively lower SCR temperature range relative to a high SCR efficiency threshold and a low SCR efficiency threshold.

System and method of isolating component failures in an exhaust aftertreatment system

In one non-limiting embodiment, an apparatus for treating exhaust includes a reductant injector, an aftertreatment component including a NOreduction catalyst, and a pathway for directing exhaust to the aftertreatment component. The pathway includes a constriction zone within which is positioned a mixing member. The constriction zone begins downstream of the reductant injector and upstream from the aftertreatment component. However, other embodiments, forms and applications are also envisioned.

Reductant material deposit reduction in exhaust aftertreatment systems

An internal combustion engine includes a cooling fluid circuit and a pumping circuit. The pumping circuit drives an ejector pump located along the cooling fluid circuit, enabling a reduced parasitic load on the engine from pumping cooling fluid through the cooling fluid circuit.

Ejector coolant pump for internal combustion engine

A method includes determining a first NOconversion efficiency (&#x3b7;) value and determining that a diesel exhaust fluid (DEF) level has increased a threshold amount. Further, the method includes determining a second NOconversion &#x3b7; value and comparing the first NOconversion &#x3b7; value and the second NOconversion &#x3b7; value, determining a NOconversion &#x3b7; change in response to comparing, and determining a DEF quality indicator in response to the NOconversion &#x3b7; change.

System, method, and apparatus for determining aftertreatment fluid quality

A fuel injector, a method of mounting a fuel injector, a combination injector and clamping, and a clamp are all provided for ensuring the fuel injector is mounted in a proper rotative position in an injector mounting bore of any one of multiple internal combustion engine platforms requiring different injector mounting positions. The injector includes a first alignment feature having a first geometry corresponding to a first engagement feature of the first engine platform and adapted to be engaged by the first engagement feature to secure the injector to the first engine platform. The fuel injector further includes a second alignment feature having a second geometry different from, and incompatible with, the first geometry and corresponding to a second engagement feature of the second engine platform thereby ensuring the fuel injector is circumferentially oriented in a correct rotative position required by a given engine platform.

Fuel injector, clamping assembly and method of mounting a fuel injector

A method and system for controlling the temperature of an engine system is disclosed. The method and system comprise measuring a coolant temperature of the engine system; measuring noise factors of the engine system; and controlling components of the engine system to provide for an optimal operation of the engine based upon the measured temperature and measured noise factors. Accordingly, a system and method in accordance with the present invention combines measuring noise factors such as coolant pressure or coolant concentration and the temperature and then adjusting the threshold values for factors such as fan on temperature and engine protection derate. In so doing the coolant temperature can be controlled within an acceptable range of values.

Growing community of inventors

Columbus, IN, United States of America

Mark N Bays