Purdue Research Foundation

Deere & Company

Eaton Intelligent Power Limited

Cummins Inc.

Gregory M Shaver

Harikrishnan Raghukumar

Dheeraj Gosala

James Edward McCarthy, Jr

Corwin Marcus Puryk

Stephen R Corban

Anant Puri

Lyle E Kocher

Ryan R White

Dat Duc Le

Chufan Jiang

Ziping Liu

John Thomas Evans

Mark Magee

Jeremy D Crismore

Kalen Vos

Mrunal Joshi

Alexander H Taylor

Bradley W Pietrzak

Carrie Hall

Troy E Odstrcil

Daniel Van Alstine

Shveta Vinayak Dhamankar

Jr James E Mccarthy

A system and method for dynamically deactivating engine cylinders of an engine equipped with a cylinder deactivation system, where the system and method control torsional vibration in the engine while deactivating cylinders using a computer programed with a desired firing density and a controlled range of engine vibration frequencies. The computer dynamically determines a cylinder firing pattern that provides the desired firing density while optimizing a cost function norm in the controlled range of engine vibration frequencies. The cylinder deactivation system in the engine is then controlled using the determined cylinder firing pattern.

Method for dynamically determining a firing pattern for an engine with dynamic cylinder activation and a system implementing the method

An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system to provide air to the plurality of cylinders through respective ones of a plurality of intake valves, an exhaust system to release exhaust gas from the plurality of cylinders through respective one of a plurality of exhaust valves, an aftertreatment system to treat exhaust emission from the engine, and a controller coupled to at least one sensor and configured to control a cam phaser for thermal management of the aftertreatment system.

Cam phasing control for thermal management

A vehicle automated unloading system may include a fill model and an unloading controller. The fill model is a model of a fill characteristic of a container as a function of variables comprising material unloading times, material unloading rates and material unloading locations. The unloading controller is to (a) determine a current model-based fill characteristic of the container using the dynamic fill model and (b) output control signals to adjust at least one of a material unloading time, a material unloading rate and a material unloading location based upon the current model-based fill characteristic of the container.

Vehicle automated unloading

A system and method for improving the functioning of a turbocharged diesel engine equipped with a cylinder deactivation system includes detecting when the turbocharged diesel engine is at risk of compressor surge, and then delaying the implementation of the cylinder deactivation. The delay may be a set period of time, or it may be determined by performing a set of instructions effective for estimating changes in intake manifold pressures over time if cylinders are deactivated, and then comparing the intake manifold pressure estimates to acceptable intake manifold pressure information. A formula for performing the required estimates is provided.

System and method for avoiding compressor surge during cylinder deactivation of a diesel engine

Increasing engine idle speed, combined with modulating the timing of the exhaust valve during idling, increases heat transfer from the engine to aftertreatment systems to reduce the time required for the aftertreatment system to reach a minimum temperature for efficient operation. The resultant increases in heat transfer include an increase of at least 30% in the flow rate of exhaust gases and an increase of exhaust temperature by at least 25&#xb0; C.

Implementing variable valve actuation on a diesel engine at high-speed idle operation for improved aftertreatment warm-up

Advanced combustion modes, such as PCCI, operate near the system stability limits. In PCCI, the combustion event begins without a direct combustion trigger in contrast to traditional spark-ignited gasoline engines and direct-injected diesel engines. The lack of a direct combustion trigger encourages the usage of model-based controls to provide robust control of the combustion phasing. The nonlinear relationships between the control inputs and the combustion system response often limit the effectiveness of traditional, non-model-based controllers. Accurate knowledge of the system states and inputs is helpful for implementation of an effective nonlinear controller. A nonlinear controller is developed and implemented to control the engine combustion timing during diesel PCCI operation by targeting desired values of the in-cylinder oxygen concentration, pressure, and temperature during early fuel injection.

Nonlinear model-based controller for premixed charge compression ignition combustion timing in diesel engines

A system and method are provided for monitoring a pressure of fuel supplied to the fuel injector, and providing a control input voltage to the piezostack in response to the pressure to cause the injector to provide a fuel injection having a desired shape. In the system and method, providing a control input voltage includes applying a model-based algorithm to the pressure to determine the control input voltage.

Method and apparatus for dynamic surface control of a piezoelectric fuel injector during rate shaping

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Lafayette, IN, United States of America

Gregory M Shaver