U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 123/679 - Combined with engine condition responsive means


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter wherein the mixture forming means additionally
No. of patents: 145
Last issue date: 08/02/2011


1        
NumberTitleIssue Date
7987839Method to determine a fuel composition
The invention concerns a method to determine the composition of a fuel from the components ethanol and gasoline of an internal combustion engine, wherein the fuel is supplied to the internal combustion engine by a fuel supply unit and via two fuel distributor rails;...
08/02/2011
7841326Method for operating an internal combustion engine
A method for operating an internal combustion engine working according to the Otto principle, in which fuel, particularly gasoline, is injected directly into a combustion chamber and is inflamed by self-ignition. A characteristic quantity characterizing the stabilit...
11/30/2010
7540279High efficiency stoichiometric internal combustion engine system
A power system including a stoichiometric compression ignition engine in which a roots blower is positioned in the air intake for the engine to control air flow. Air flow is decreased during part power conditions to maintain the air-fuel ratio in the combustion cham...
06/02/2009
7472697Air-fuel ratio control apparatus
An air-fuel ratio control apparatus is applied to an internal combustion engine including a variable lift mechanism which changes a lift amount of an intake valve. An oxygen sensor, which outputs a signal indicating an oxygen concentration in exhaust gas, is provide...
01/06/2009
7438066Method and device for controlling an internal combustion engine
A method and device for controlling an internal combustion engine, in which the fuel quantity to be injected into the engine is limited to a limiting value. The limiting value is predefined on the basis of the output signal of a closed-loop controller or an open-loo...
10/21/2008
RE40431Method of regulating an internal combustion engine
Method of regulating an internal combustion engine in order to reach presettable nitrogen oxide emission values of the internal combustion engine, wherein the internal combustion engine is supplied at least some of the time with a first fuel and at least some of the...
07/15/2008
7380547Adaptive NOx emissions control for engines with variable cam phasers
A control system for adjusting levels of emissions exiting an engine includes a NOx sensor that generates a NOx signal in response to oxides of nitrogen (NOx) in an exhaust gas and a control module that communicates with the cam phaser. The rotational position of th...
06/03/2008
7367188System and method for diagnostic of low pressure exhaust gas recirculation system and adapting of measurement devices
A system for a diesel engine having an intake manifold and an exhaust manifold, comprises a turbocharger between the intake and exhaust manifolds; a low pressure exhaust gas recirculation system having a first valve coupled thereto for regulating flow; a high pressu...
05/06/2008
7363920Fuel supply control system for internal combustion engine
A fuel supply control system for an internal combustion engine having at least one fuel injection valve for injecting fuel into an intake pipe or a combustion chamber of the engine. A flow rate of air supplied to the engine and an air-fuel ratio are detected. A dema...
04/29/2008
7357127Method for determining the air mass in a cylinder
The method for determining an air mass in a cylinder of an internal combustion engine with a supercharging device and with a device for variably controlling the valve overlap of the gas exchange valves is characterized by a reference characteristic curve for the air...
04/15/2008
7334569Control apparatus for internal combustion engine
An air-fuel ratio feedback system is configured to calculate the deviation between a target air-fuel ratio and an air-fuel ratio sensor value, multiplying a proportional gain by the calculated deviation to obtain a feedback correction value, and add the calculated f...
02/26/2008
7334570Common rail fuel injection system with accumulator injectors
A fuel injection system for an internal combustion engine includes a common rail, a plurality of accumulator injectors, and at least one accumulator controller separate from the accumulator injectors and connected to the common rail. Each accumulator controller incl...
02/26/2008
7311094Method for operating an internal combustion engine
Operation of an internal combustion engine with oil lubrication and electronic fuel injection, includes the steps of determining a flow of fuel mass (mkp_ausg) evaporating out of oil, and determining a setpoint injected-fuel quantity (rk_ev) with taking into account...
12/25/2007
7305977System for controlling regeneration of lean NOtraps
A control system and method for controlling torque output of an engine include an air control module that receives an actual airflow and a desired airflow and outputs an adjusted actual airflow based on the actual airflow and the desired airflow. A fuel control modu...
12/11/2007
7293555Controller and control method for internal combustion engine
A controller approximates an output characteristic of an air flow meter using at least one parameter, and approximates a characteristic of a fuel injection characteristic of an injector using at least one parameter. These parameters are determined and updated based ...
11/13/2007
7281531System and method of stoichiometric combustion for hydrogen fueled internal combustion engines
A hydrogen-fueled internal combustion engine utilizes either internal or external exhaust gas recirculation (EGR), while providing an overall stoichiometric fuel/air ratio. An EGR system provides recirculated exhaust gas to the engine, and an engine controller regul...
10/16/2007
7280912Controller and control method for an engine control unit
A method for controlling operation of an electronic control unit for use in an internal combustion engine, the electronic control unit being used to control different engine modes, the method including providing a function mode map having a plurality of data map poi...
10/09/2007
7280906Method for detecting misfires of an internal combustion engine and device for carrying out the method
A method for detecting combustion misfires of an internal combustion engine and a device for carrying out the method, in which an evaluation of a lambda signal made available by at least one broadband lambda sensor is provided. The lambda signal is compared to a lam...
10/09/2007
7270108Opposed piston, homogeneous charge pilot ignition engine
An engine of the opposed piston, two-stroke, compression ignition type includes provision for injection of a main charge of liquid fuel into the bore of a cylinder between opposed pistons early in a compression stroke to permit the fuel to evaporate and mix with air...
09/18/2007
7255098Engine emissions control system
An engine emissions control system is provided. The system may include an exhaust producing engine and an exhaust system through which the exhaust produced by the engine may flow. The system may also include a NOx sensor configured to take a NOx
08/14/2007
7249588Speed control method
A method for controlling an engine having both an electronically controlled inlet device, such as an electronic throttle unit, and an electronically controlled outlet device, such as a variable cam timing system is disclosed. The method of the present invention achi...
07/31/2007
7236913Method for simulating a mechatronic system
According to the invention, a simulation is carried out based on the fundamental motion equation (1) for simulating the system by means of: transformation of the fundamental motion equation into linear differential equations of the first order; further transformatio...
06/26/2007
7234455Robust maximum engine torque estimation
A system for a vehicle comprising of an engine including a first cylinder group and a second cylinder group; a linear exhaust gas sensor coupled exclusively to the first cylinder group; a switching exhaust gas sensor coupled exclusively to the second cylinder group;...
06/26/2007
7234450Gas density ratio detector, gas concentration detector, and fuel vapor treatment apparatus
When a gas flow producer is driven, plural kinds of gases flow into a measure-passage at respective timing. An orifice is provided in the measure-passage. The orifice has a diameter-changing portion which restricts a separation of gases from an inner surface of the ...
06/26/2007
7207316Control apparatus and control method for internal combustion engine
An internal combustion engine (1) generates power by burning a mixture of fuel and air in each combustion chamber 3. The internal combustion engine 1 is provided with an in-cylinder pressure sensor (15) disposed in each combustion chamber...
04/24/2007
7201160Air-fuel ratio sensor monitor, air-fuel ratio detector, and air-fuel ratio control
An air-fuel ratio sensor monitor is provided which is designed to monitor reactive characteristics or response rates of an air-fuel ratio sensor when an air-fuel ratio of a mixture to an internal combustion engine is changing to a rich side and to a lean side. The m...
04/10/2007
7200449Control system for plant and air-fuel ratio control system for internal combustion engine
A control system for a plant, having an identifier and a controller. The identifier identifies model parameters of a controlled object model which is obtained by modeling the plant. The controller calculates a control input to the plant so that an output from the pl...
04/03/2007
7191772Method of regulating an internal combustion engine
Method of regulating an internal combustion engine in order to reach presettable nitrogen oxide emission values of the internal combustion engine, wherein the internal combustion engine is supplied at least some of the time with a first fuel and at least some of the...
03/20/2007
7168423Gas sensor units for engines
In a multipurpose engine with a reduced or limited displacement adapted for use in a portable work machine or the like, the engine includes a detecting element of a gas sensor for controlling an air-fuel ratio. Damage or degradation of the detecting element due to v...
01/30/2007
7167791Oxygen depletion sensing for a remote starting vehicle
Automotive vehicles are increasingly being equipped with remote starting devices. If the vehicle is within a space which is very well sealed, it is possible that the concentration of the exhaust gases may exceed desirable levels. A method and system are disclosed in...
01/23/2007
7159581Method of controlling recirculation of the exhaust gas of an internal-combustion supercharged engine and engine using such a method
The present invention relates to a method of controlling recirculation of part of the exhaust gas of an internal-combustion supercharged engine with a combustion cycle during which at least one cylinder (10) of the engine is in the intake phase simultaneously...
01/09/2007
7159386Crankcase ventilation system
A crankcase ventilation system may include a first exhaust flow path configured to permit flow of main exhaust gases from a combustion chamber of an internal combustion engine and a particulate trap disposed in the first exhaust flow path. The system may also includ...
01/09/2007
7152559Valve and fueling strategy for operating a controlled auto-ignition four-stroke internal combustion engine
Part load operating point for a controlled auto-ignition four-stroke internal combustion engine is reduced without compromising combustion stability through a valve control operative to establish low pressure conditions within the combustion chamber into which fuel ...
12/26/2006
7150250Valve and fueling strategy for operating a controlled auto-ignition four-stroke internal combustion engine
Low load operating point for a controlled auto-ignition four-stroke internal combustion engine is reduced without compromising combustion stability through a valve control operative to establish sub-atmospheric pressure conditions within the combustion chamber into ...
12/19/2006
7082935Apparatus and methods for closed loop fuel control
A method of controlling fuel input to an engine of a vehicle. A feedback signal is received from a sensor that senses engine exhaust. A dither signal having the same frequency as the feedback signal is applied to a fuel control signal controlling fuel to the engine....
08/01/2006
7048844Gas sensor and method for use thereof
A sensor comprises: a pump cell comprising an inner pump electrode, an outer pump electrode, a pump cell electrolyte layer interposed between the inner pump electrode and the outer pump electrode and a cell isolation layer disposed on the inner pump electrode on a s...
05/23/2006
7044118Method and device for controlling injection in an internal combustion engine, in particular a diesel engine with a common rail injection system
There is described a method of controlling injection in a vehicle internal combustion engine, wherein the intake air flow and exhaust lambda are measured to estimate the fuel quantity actually injected into the engine and perform a closed-loop control whereby the es...
05/16/2006
7036982Method and apparatus to control an exhaust gas sensor to a predetermined termperature
The invention provides a control strategy and a control system to control a gas sensor to a target operating temperature. It relies upon both feedback and model-based feedforward control systems to achieve and then maintain the sensor at the target operating tempera...
05/02/2006
7017559Method for the operation of a fuel system for an LPG engine
A method for operating a fuel system for an internal combustion engine operated with fuel gas. The fuel system has at least one electrically actuated shutoff valve (4) and at least one electrically operated heating device (14, 16). The operating method...
03/28/2006
7013862Method for operating an internal combustion engine
The invention concerns a method for operating an internal combustion engine (1, 18) having a plurality of combustion chambers (4), in the case of which the combustion chambers (4) are charged with fuel and air or with a fuel/air mixture. In orde...
03/21/2006
1        
 
Sign InRegister
Username  
Password   
forgot password?