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Class 123/406.23 - Engine output (e.g., torque, speed, horsepower) or fuel consumption optimization


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter wherein the regulating means responds to
No. of patents: 154
Last issue date: 03/06/2012


1        
NumberTitleIssue Date
8127744Cold start engine control diagnostic systems and methods
An engine control module includes a spark control module, an engine speed module, a residual determination module, and a metric determination module. The spark control module actuates spark plugs based on a commanded spark timing. The engine speed module determines ...
03/06/2012
8028678Direct injection alcohol engine with boost and spark control
Boosted engine operation and spark timing of an engine may be adjusted with alcohol content of the fuel in a direct injection engine. Further, various adjustments may be performed in numerous related systems to account for increased maximum engine torque, such as tr...
10/04/2011
7934486Internal and external LP EGR for boosted engines
A method for controlling combustion in a combustion chamber of a turbocharged engine is described. The method includes admitting to the combustion chamber prior to ignition a first amount of exhaust from an intake manifold of the engine, the first amount changing at...
05/03/2011
7926466Engine control device, engine control method, and motorcycle
An engine control device includes an engine revolution speed information acquisition device for acquiring the revolution speed of an engine, an accelerator opening sensor for detecting the opening of an accelerator operated by a rider of a vehicle mounted with the e...
04/19/2011
7909019Direct injection alcohol engine with boost and spark control
Boosted engine operation and spark timing of an engine may be adjusted with alcohol content of the fuel in a direct injection engine. Further, various adjustments may be performed in numerous related systems to account for increased maximum engine torque, such as tr...
03/22/2011
7891336Differential torque operation for internal combustion engine
A method adjusts a torque differential between firing cylinders based on engine speed such that greater torque differentials are provided at higher engine speeds. Further, the torque differential may be adjusted based on the firing pattern of the cylinders. ...
02/22/2011
7878175Torque reserve and emission control system for coordinated torque control
A coordinated torque control system includes a catalyst module that generates a multi-mode enable signal based on a catalyst light off enable signal. A torque reserve module generates a torque reserve signal based on the multi-mode enable signal, an engine speed sig...
02/01/2011
7748362Managing lean air/fuel transients in coordinated torque control
An engine control system includes an air control module, a spark control module, a torque control module, a transient detection module, and a launch torque module. The air control module controls a throttle valve of an engine based on a commanded predicted torque. T...
07/06/2010
7594496Method and device for operating a drive unit of a vehicle
A method and a device for operating a drive unit of a vehicle are provided, which result in reduced fuel consumption in the overrun condition. An output variable of the drive unit is set, in this context, according to a preset driving strategy in the overrun conditi...
09/29/2009
7451739Ignition timing control system and method for internal combustion engine, and engine control unit
An ignition timing control system for an internal combustion engine, which is capable of reducing the capacity of a memory that stores data used in controlling ignition timing, thereby reducing manufacturing costs. An ignition timing control system that controls ign...
11/18/2008
7433775Engine torque control at high pressure ratio
A method of controlling a torque output of an internal combustion engine includes determining a pressure ratio, determining a reference torque based on the pressure ratio and a torque request, calculating a desired throttle area based on the reference torque and reg...
10/07/2008
7424882Engine method
A method for controlling an engine airflow, the engine having at least one cylinder, the engine also having an intake manifold and an outlet control device for controlling flow from the intake manifold into the cylinder, comprising of generating a desired engine tor...
09/16/2008
7418943Spark advance foe engine idle speed control
An engine idle speed control system for regulating an idle speed of an internal combustion engine includes a first module that determines an indicated torque of the engine based on a current spark timing and a second module that determines a desired indicated torque...
09/02/2008
7387108Ignition timing control system and method for internal combustion engine, and engine control unit
An ignition timing control system for an internal combustion engine, which is capable of reducing the capacity of a memory that stores data used in controlling ignition timing, thereby reducing manufacturing costs. An ignition timing control system that controls ign...
06/17/2008
7377260Method and device for controlling an internal combustion engine
An internal combustion engine has a plurality of cylinders having combustion chambers and each being associated with a spark plug designed for igniting a mixture of air and fuel in the combustion chamber, and at least two adjusting devices for adjusting the air supp...
05/27/2008
7376505Method and device for operating an internal combustion engine
A method and a device for operating an internal combustion engine, in particular a motor vehicle having a plurality of cylinder banks are described, making it possible to eliminate fluctuations in a time trend in an output quantity of the internal combustion engine ...
05/20/2008
7369934Predictive engine combustion management
A system, apparatus, and method for predicting an engine operating condition and providing a component in accordance with the prediction. ...
05/06/2008
7367311Control system for compression ignition internal combustion engine
A compression ignition internal combustion engine includes injectors, each of which injects fuel into a corresponding cylinder. An ECU determines target ignition timing based on engine operational information and adjusts fuel injection start timing and a fuel inject...
05/06/2008
7347184Controller and controlling method for internal combustion engine
A base engine torque generated with an estimated intake air amount is estimated. An engine torque is corrected by correcting an ignition timing based on a difference between a required engine torque and the base engine torque. A torque correction amount is calculate...
03/25/2008
7334549Multi-stroke cylinder operation in an internal combustion engine
A method to control valves during multi-stroke cylinder operation. Valves are controlled to improve emissions and engine torque resolution. ...
02/26/2008
7325532Method for the torque-oriented control of an internal combustion engine
A method for the torque-oriented control of an internal combustion engine, in which a sum torque (MSUM) is calculated from a set torque value (MSW) and a friction torque (MF). A set injection quantity (mSL) for driving the internal combustion engine is calculated fr...
02/05/2008
7328097Vehicle behavior estimating device and vehicle behavior controlling device
While a driving torque TD outputted to a driving shaft via an AT from an engine is detected, a road-surface transmitting torque Td_tire is detected based on rotation speeds Vwdr, Vwdl of vehicle driving wheels, a vehicle body speed Vd, and driving torques Tdr, Tdl, ...
02/05/2008
7320306Engine revolution controller of working machine
In an engine of a working machine having no governor mechanism, the engine revolution speed is controlled such that the revolution speed can stably be maintained irrespective of the variation in load without adjusting the throttle opening to exploit the full potenti...
01/22/2008
7318411Adaptive ignition dwell based on ionization feedback
A system for determining a minimum ignition coil charge duration of an internal combustion engine to meet a desired level of combustion stability includes a sensor in communication with a controller. The sensor is configured to measure the ionization current of a cy...
01/15/2008
7305298Charge motion control valve fuzzy logic diagnostic
A method of diagnosing a malfunction of a charge motion control valve coupled to an intake manifold of an internal combustion engine is provided. The method includes: commanding the valve to at least one of close and open; determining a pressure range using fuzzy lo...
12/04/2007
7293406Engine control for low emission vehicle starting
A method for rapidly heating an emission control device in an engine exhaust uses excess air added to the exhaust via an air introduction device. After an engine cold start, the engine is operated to raise exhaust manifold temperature to a first predetermined value ...
11/13/2007
7295918Automobile and control method of automobile
When an automobile moves in a reverse direction opposite to an expected driving direction according to the current setting of a gearshift position SP, the automobile of the invention sets an adjustment torque Ta corresponding to a measured road surface gradient θ a...
11/13/2007
7290442Method and system of estimating MBT timing using in-cylinder ionization signal
A robust multi-criteria minimum timing for the best torque (MBT) timing estimation method and apparatus utilizes different ionization signal waveforms that are generated under different engine operating conditions. The MBT timing criteria is calculated based upon bo...
11/06/2007
7275518Torque-based powertrain control for vehicles
A system and method for controlling a vehicle powertrain having an internal combustion engine include determining a difference between a desired engine torque and a current engine torque, adjusting the difference based on a stored torque offset corresponding to a cu...
10/02/2007
7267103Ignition timing control system for internal combustion engine
An ignition timing control system for internal combustion engines, which is capable of preventing occurrence of variation in engine speed and vibrations which can be caused due to variation in combustion state between the cylinders, to thereby improve drivability. T...
09/11/2007
7246599Method for determining the ignition angle
A method for determining the ignition angle is provided, in which modifications of manipulated variables which have an influence on the knock limit, and therefore on the optimum ignition angle as well, are dynamically taken into account. To this end, a base ignition...
07/24/2007
7225074Engine control system for an internal combustion engine having a plurality of cylinders
An engine control system comprises a first control device which is associated with a first section of the cylinders, and a second control device which is associated with a second section of the cylinders. The first control device is designed in order to determine an...
05/29/2007
7213573System and method of controlling engine dilution rate using combustion stability measurer derived from the ionization signal
This feature of the present invention comprises a system and method of controlling exhaust gas recirculation (EGR) based on a measure combustion stability measure. The combustion stability measure is obtained by determining the integration duration of the engine ion...
05/08/2007
7209823Controller
A control system which is capable of enhancing the accuracy of control, when the output of a controlled object is controlled with a control algorithm to which is applied a modulation algorithm based on one of a Δ modulation algorithm, a ΔΣ modulation algorithm, a...
04/24/2007
7198029Extension of DOD operation in torque control system
An engine control system for regulating a torque output of a variable displacement engine includes a first module that calculates a torque modification term based on an engine operating parameter and a second module that determines a desired engine torque and an est...
04/03/2007
7188594Apparatus and method for controlling variable valve actuation mechanism
In an internal combustion engine equipped with a variable valve actuation mechanism, which varies a lift amount of an intake valve, when the lift amount is forcedly controlled at the minimum to learn a detection result of the lift amount at that time, a throttle ope...
03/13/2007
7182064Method for regulating the rotational speed of an internal combustion engine
A method for closed-loop speed control of an internal combustion engine that is provided as a generator drive or a marine propulsion unit, including the steps of: computing a first control deviation (dR1) from a speed variance comparison; computing a first se...
02/27/2007
7120536Method of diagnosing the operating state of a motor vehicle diesel engine
In the method of diagnosing the operating state of a motor vehicle diesel engine of the invention, the engine includes a pressure acquisition system associated with each cylinder of the engine to acquire the pressure in that cylinder, an engine shaft angle acquisiti...
10/10/2006
7111611Torque sensor-based engine and powertrain control system
A system for controlling a vehicle that includes an engine comprises a controller having an input for receiving an engine torque input command indicative of a desired amount of torque to be generated by the engine, and an output for providing an engine torque output...
09/26/2006
7104244Control system for variable-cylinder internal combustion engine
A control system for a variable-cylinder internal combustion engine, which is capable of attaining excellent fuel economy by executing a partial-cylinder operation mode as long as possible, while suppressing vibration and noise during the partial-cylinder operation ...
09/12/2006
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