Columbus, IN, United States
Columbus, IN, United States

Cummins Inc. is a Fortune 500 corporation that designs, manufactures, and distributes engines, filtration, and power generation products. Cummins also services engines and related equipment, including fuel systems, controls, air handling, filtration, emission control and electrical power generation systems. Headquartered in Columbus, Indiana, United States, Cummins sells in approximately 190 countries and territories through a network of more than 600 company-owned and independent distributors and approximately 6,000 dealers. Cummins reported net income of $1.64 billion on sales of $17.3 billion in 2012. Wikipedia.

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Patent
Cummins | Date: 2016-08-19

A method for protecting an exhaust aftertreatment system of an internal combustion engine from deterioration by selectively diverting exhaust gasses from the engine away from a component of the exhaust aftertreatment system includes assessing a status of an operating condition associated with a physical condition of the component of the internal combustion engine. The status of the operating condition is compared with a threshold value that corresponds with deterioration of the physical condition of the component. A valve upstream of the component is moved to a first position to open a bypass fluid path directing exhaust gasses around the component when the status of the operating condition meets the threshold value to reduce deterioration of the component. The valve is moved to a second position to close the bypass fluid path thereby directing exhaust gasses to the component when the status of the operating condition does not meet the threshold.


Patent
Cummins | Date: 2017-02-08

Systems and methods described herein provide a relatively fast engine restart. The systems and methods include receiving an engine stop command in a vehicle, the engine stop command structured to shut down an engine of the vehicle; receiving position data from a bi-directional sensor, the position data indicative of a position of a crankshaft wheel; determining a stop position of the crankshaft wheel based on the position data when the engine is shut down; determining a first viable cylinder of the engine to restart combustion in based on the determined stop position of the crankshaft wheel; and receiving an engine restart command, the engine restart command structured to restart the engine beginning with initiation of combustion in the first viable cylinder.


Patent
Cummins | Date: 2017-05-03

Various embodiments provide a method of varying engine displacement. The method includes determining a change in a stroke distance of the engine required to obtain a pre-determined volumetric change in a displacement of the engine. The method includes machining a top surface of a crankcase so as to remove a height of material from the crankcase. The height is calculated to correspond to the change in the stroke of the engine required to obtain the volumetric change in the displacement of the engine. The method also includes coupling the crankcase to an engine block portion of the engine.


A system and method for fluidly sealing a cylinder head interface between an engine block and a cylinder head of an internal combustion engine. An example apparatus includes a perimeter seal disposed on an outer periphery of the cylinder head. The perimeter seal has a first surface to abut a cylinder head sealing surface and a second surface to abut an engine block sealing surface. The perimeter seal is configured to prevent fluid from an external environment from entering the cylinder head interface and to allow fluid within the cylinder head interface to vent to the external environment when the fluid is above a predetermined pressure. A first fluid transfer tube seal fluidly seals a first fluid transfer orifice extending between the engine block and the cylinder head. The perimeter seal and the first fluid transfer tube seal are formed as a unitary structure.


Patent
Cummins | Date: 2017-02-08

The invention relates to a reductant heating system. The system comprises a coolanfi line comprising a first portion positionable in heat exchanging communication with reductant in a reductant tank and a second portion positionable in heat exchanging communication with reductant in a reductant line, the reductant line configured to receive reductant from the reductant tank, a flow regulation device coupled to the coolant line and configured to regulate the flow rate of coolant entering the first portion of the coolant line, and a controller communicable in signal transmitting communication with the flow regulation device to vary the flow rate of coolant through the first portion of the coolant line to achieve a desired temperature of coolant in the second portion of the coolant line.


Patent
Cummins | Date: 2017-04-05

A system includes an internal combustion engine producing an exhaust gas, an aftertreatment system receiving the exhaust gas, the aftertreatment system including a particulate filter positioned upstream of an SCR catalyst component, and a urea injector operatively coupled to the aftertreatment system at a position upstream of the SCR catalyst component. The system further includes a controller that interprets an exhaust temperature value, an ambient temperature value, and a urea injection amount. The controller determines a urea deposit amount in response to the exhaust temperature value, the ambient temperature value, and the urea injection amount, and initiates a desoot regeneration event in response to the urea deposit amount. The desoot regeneration event includes operating the engine at a urea decomposition exhaust temperature.


An aftertreatment system comprises a first SCR system, a second SCR system positioned downstream of the SCR system and a reductant storage tank. At least one reductant insertion assembly is fluidly coupled to the reductant storage tank. The at least one reductant insertion assembly is also fluidly coupled to the first SCR system and the SCR system. A controller is communicatively coupled to the reductant insertion assembly. The controller is configured to instruct the reductant insertion assembly to asynchronously insert the reductant into the first SCR system and the second SCR system.


A system includes an engine and a controller in operative communication with the engine. Engine operating conditions are determined. At least one engine operating condition is determined. Based on the determined at least one engine operating condition, brake-specific fuel consumption is determined for each of a plurality of candidate cylinder pressures. A target cylinder pressure is selected from the plurality of candidate cylinder pressures. The target cylinder pressure is the candidate cylinder pressure at which brake-specific fuel consumption is minimized. Intake valve timing of the engine is modulated so as to achieve the target cylinder pressure.


Patent
Cummins | Date: 2017-01-18

An adaptor (18) is disclosed for connecting a generator (12) to a prime mover (10). The adaptor comprises two separable parts (30, 32). By providing an adaptor comprising two separable parts, it may be possible for one part to be removed in order to allow access to moving parts which would otherwise be inaccessible. This may simplify the process of servicing moving parts such as a coupling or bearings.


A kit for installing an aftertreatment system package is disclosed. The kit comprises a first aftertreatment component (202) having a first cross-sectional shape, a second aftertreatment component (204) having a second cross-sectional shape, and a third aftertreatment component (206) having a third cross-sectional shape. The kit also comprises a first bracket (102) comprising a first mounting interface, the first bracket defining a first set of aftertreatment engagement features comprising at least a portion of each of the first cross-sectional shape, the second cross-sectional shape, and the third cross-sectional shape. The kit also comprises a second bracket (104) comprising a second mounting interface, the second bracket defining a second set of aftertreatment engagement features comprising at least a portion of each of the first cross-sectional shape, the second cross-sectional shape, and the third cross-sectional shape. The first bracket and second bracket are structured such that, when the first mounting interface is mounted on a first mounting surface and the second mounting interface is mounted on a second mounting surface, the cross-sectional shapes of the first bracket align with the cross-sectional shapes of the second bracket.

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