1
Stephen J Citron, John E O Higgins: Cylinder-by-cylinder engine pressure and pressure torque waveform determination utilizing crankshaft speed fluctuations. Purdue Research Foundation, Barnes & Thornburg, July 4, 1989: US04843870 (39 worldwide citation)

An elastic model of the engine-drivetrain system is proposed. Measured crankshaft speed fluctuation data is developed and computations are made from the model to determine the fluctuation waveform of both the total engine torque being developed and the engine pressure torque. Utilizing the engine pr ...


2
David J Andres, Gregory D Hoenert, Thomas J Crowell, George E Donaldson: Engine control strategies. Caterpillar, Liell & McNeil, November 15, 2005: US06965826 (23 worldwide citation)

Electronically controlled internal combustion engines are operated based upon control calibration algorithms that can come in a variety of forms, including maps, equations, surfaces and other mathematical techniques. Each combination of a control calibration algorithm and a particular engine must sa ...


3
Steven M Bellinger: System for controlling an internal combustion engine in a fuel efficient manner. Cummins, Barnes & Thornburg, May 14, 2002: US06387011 (20 worldwide citation)

A system for controlling an internal combustion engine in a fuel-efficient manner includes a control computer operable to determine a number of engine load/engine speed boundary conditions in relation to an engine output characteristics map and define therefrom an undesirable engine operation region ...


4
Lynn Edward Davison: Method for monitoring a cooling system. Ford Global Technologies, Julia Voutyras, October 16, 2001: US06302065 (18 worldwide citation)

A method is presented for diagnosing an engine coolant temperature sensor and an engine thermostat. Engine coolant temperature is estimated based on engine operating conditions, such as engine speed, net engine torque, air flow, fuel-air ratio, exhaust gas temperature, etc., and a characteristic of ...


5
John Karl Hochmuth: Engine management strategy to improve the ability of a catalyst to withstand severe operating enviroments. Engelhard Corporation, Richard A Negin, February 8, 2000: US06021638 (15 worldwide citation)

A method and engine control strategy is described that enables improved catalyst performance after having been exposed to severe operating environments. More specifically, rhodium-containing catalysts are reactivated by being subjected to fuel-rich spikes after being exposed to high temperature, exc ...


6
Daneau Marc, Netter Caroline: System for estimating quantities of pollutants emitted in exhaust gases of vehicle diesel engine using data recorded in neuron network. Renault Sas, May 20, 2005: FR2862342-A1 (3 worldwide citation)

Data records stored in an engine control unit comprise one or more neuron networks (1); data entries (2) representative of the function of the engine and thus vehicle displacement, available in the electronic control unit without adding a detector, and means (4) of accumulating the estimated quantit ...


7
Steven E Carlson, Xin Yuan, Siamak Hashemi, Vijay Srinivasan, Srihari Kalluri, Andrew W Phillips, Mark A Wilcutts, Louis J Serrano, Shikui Kevin Chen: Deceleration cylinder cut-off. Tula Technology, Beyer Law Group, October 17, 2017: US09790867 (2 worldwide citation)

Methods and arrangements for transitioning an engine between a deceleration cylinder cutoff (DCCO) state and an operational state are described. In one aspect, transitions from DCCO begin with reactivating cylinders to pump air to reduce the pressure in the intake manifold prior to firing any cylind ...


8
John L Lahti, Michael J Maney, Dustin W Ridenour, Michael J Pipho: System and method for exhaust gas recirculation flow correction using temperature measurements. Deere & Company, Lorenz & Kopf, March 27, 2018: US09926866 (1 worldwide citation)

An exhaust gas recirculation (EGR) flow correction system and method are disclosed for an engine air system with air and EGR inputs to a mixer. The system includes three temperature sensors to measure temperatures of the air input, EGR input, and mixer output; and an air system model computing EGR f ...


9
Jess W Gingrich, Raphael Gukelberger, Jacob R Zuehl: Engine fuel control for internal combustion engine having dedicated EGR. SOUTHWEST RESEARCH INSTITUTE, Livingston Law Firm, May 16, 2017: US09650976

A method of controlling the amount of fuel delivered to an engine having at least one dedicated EGR cylinder. The method is typically performed on an engine cycle-by-cycle basis. A fueling control unit receives, from the engine's main control unit, fueling requirement data representing a current fue ...


10
Amiyo K Basu: Method of operating an engine. Caterpillar, James S Bennin, November 7, 2017: US09810672

A method of operating an engine is provided. The method includes determining a temperature and a pressure of intake air, and a temperature and a pressure of exhaust generated by the engine. The method includes determining a work performed by the engine based at least on an engine speed of the engine ...