Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7322339 | Apparent torque reserve at idle for direct injected engines A fuel injection system for a direct fuel injection (DFI) engine is provided. The system includes: injection mode module selects a fuel injection mode to be one of a single injection mode and a dual injection mode during DFI engine idle operation based on a torque r... | 01/29/2008 |
| 7311080 | Idle speed controller of internal, combustion engine, and internal combustion engine controller and internal combustion engine An idle rotational speed controller of an internal combustion engine includes an intake path for supplying air to a combustion chamber. An auxiliary intake path communicates the intake path on upstream and downstream sides of a throttle valve in the intake path. An ... | 12/25/2007 |
| 7260462 | Method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle A method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle. With known methods, electromagnetic valves are triggered with a pulse-width-modulated signal having a constant clock frequency. The object is to provid... | 08/21/2007 |
| 7210455 | Engine control with fuel quality sensor A system is described using a fuel quality sensor for controlling various aspects of engine operation. In particular, an acoustic wave sensor is utilized to measure viscosity and density of gasoline fuels. This measurement is utilized to predict engine combustion qu... | 05/01/2007 |
| 7191771 | Method for controlling an internal combustion engine having a lambda regulation The aim of the inventive method is to improve the emission values of an internal combustion engine during idling following a cold start. Said aim is achieved by inferring an adaptive value for the required fuel quantity from a characteristic curve in accordance with... | 03/20/2007 |
| 7167791 | Oxygen 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 |
| 7155901 | Catalyst temperature control on an electrically throttled engine A method to regulate catalyst temperature by adjusting engine air and fuel amounts. The method provides catalyst temperature regulation while reducing fuel consumption. ... | 01/02/2007 |
| 7140360 | System for controlling exhaust emissions produced by an internal combustion engine A system for controlling the air-to-fuel ratio in an internal combustion engine includes an air intake conduit coupled to an intake manifold, an EGR valve disposed in-line with an EGR conduit responsive to a valve control signal, a lambda sensor producing a lambda s... | 11/28/2006 |
| 7056165 | Control system for outboard motor The control system establishes an engine warm-up protocol based, at least in part, on elapsed time from engine start. The control system provides a reduced reliance on engine temperature as a basis for determining an appropriate engine idle speed. The control system... | 06/06/2006 |
| 7047922 | Valve-driving system of internal combustion engine and valve-driving apparatus A valve-driving system, which is applied to an internal combustion engine having a plurality of cylinders, for driving an intake or exhaust valve provided in each cylinder, comprising: a plurality of valve-driving apparatuses, each of which is provided for at least ... | 05/23/2006 |
| 6978774 | Emission control valve for gas-fueled engines An emission control device for use with stationary or mobile gas-fueled internal combustion engines is described, which is placed in the fuel supply line and operates with full fuel authority. An oxygen sensor measures exhaust oxygen content. The valve internally ho... | 12/27/2005 |
| 6976475 | Method for detecting a leakage in the intake port of a combustion engine, and a combustion engine equipped for implementing the method In a combustion engine, the fuel quantity is determined as a function of the inflowing air mass. As a measure for the inflowing air mass, one uses either a main load signal, which is generated by an air-mass flow sensor and represents a measure of the inflowing air ... | 12/20/2005 |
| 6968678 | High efficiency, reduced emissions internal combustion engine system, especially suitable for gaseous fuels Internal combustion (“IC”) engine system for high fuel conversion efficiency and low exhaust emissions, particularly although not exclusively with gaseous fuels. An IC engine operates at approximately stoichiometric (λ=1) air/fuel mass ratios. A higher-than-nor... | 11/29/2005 |
| 6957562 | Passive oxygen sensor diagnostic An engine exhaust sensor diagnostic system includes an oxygen sensor and a controller. The controller monitors a signal generated by the oxygen sensor, determines a rate of change of the signal, and computes diagnostic parameters. The controller indicates malfunctio... | 10/25/2005 |
| 6953029 | Method of supplying liquid gas to an internal combustion engine, a fuel supply system and a fuel supply aggregate A method and apparatus are provided for supplying liquid gas as fuel to an internal combustion engine. From the liquid gas stream that is supplied to at least one liquid gas injection valve of the internal combustion engine, a portion is branched off and expanded. T... | 10/11/2005 |
| 6931838 | Engine exhaust gas leak diagnosis Oxygen sensors (3, 13) are provided upstream and downstream of a three-way catalytic converter (10) in an exhaust passage (9) of an internal combustion engine (1). A controller (2) performs feedback correction of an air-fuel ratio ... | 08/23/2005 |
| 6918803 | Outboard motor An outboard motor in which a location on a hull of a throttle operating unit (81) such as a throttle lever and a location on the hull of an outboard motor main body accommodating therein an engine are positioned away from each other on the hull and in which a... | 07/19/2005 |
| 6848418 | External exhaust gas recirculation on board diagnostic using EGR effect on a combination of engine operating parameters A system is described for determining degradation of an exhaust gas recirculation system of an internal combustion engine. This method utilizes a combination of parameters to accurately determine degradation of the exhaust gas recirculation system. For example, the ... | 02/01/2005 |
| 6850835 | On engine trim for fuel injectors A method and apparatus for trimming a fuel injector located on an engine. The method and apparatus includes modifying an engine speed control, interrupting at least one injection event, monitoring a change associated with an engine speed, and responsively trimming t... | 02/01/2005 |
| 6820604 | System with an offset learn function and a method of determining a throttle-position sensor offset A fuel injection system in an engine. The system includes a throttle body having a throttle valve, a first sensor, and a control unit coupled to the first sensor. The first sensor measures a sensed throttle valve angle and provides a first output corresponding to th... | 11/23/2004 |
| 6684869 | System and method for detecting an air leak in an engine A system and method for detecting an air leak within an engine is provided. The engine includes an intake manifold communicating with an engine cylinder. The method includes measuring an exhaust gas constituent in exhaust gases from the engine when the en... | 02/03/2004 |
| 6609509 | LPG-engine fuel control apparatus LPG decompressed in a regulator is fed as primary fuel into an intake passage from a carburetor, and is fed as supplementary fuel to the intake passage from an injector. An ECU controls a control variable for the injector to cause an air/fuel ratio detect... | 08/26/2003 |
| 6491032 | Marine engine control system An outboard motor comprises an engine mounted within an engine compartment. The engine comprises an induction system having an induction passage extending between a plenum chamber and a combustion chamber. A throttle valve is positioned along the passage.... | 12/10/2002 |
| 6467471 | Air-fuel ratio controller for an internal-combustion engine Even when a reaction delay time of an A/F ratio detection device changes, an A/F ratio controller prevents an A/F ratio feedback control from being disturbed. The controller is programmed to calculate an A/F ratio feedback coefficient by proportional term... | 10/22/2002 |
| 6374812 | Method of regenerating an activated-carbon canister The fill level of an activated-carbon canister is calculated during the regeneration process in a lean burn combustion engine. While the engine is in idle operation, the fuel mass reduction that is adjusted by a momentum-based idle controller is used as a... | 04/23/2002 |
| 6308698 | Method and apparatus for controlling fuel injection in diesel engine An arrangement for controlling fuel injection in a diesel engine to prevent generation of smoke even when an accelerator pedal is stamped during idling. A basic amount of fuel injection Qbase is determined from an engine revolution speed Ne and... | 10/30/2001 |
| 6148611 | Engine air-fuel ratio controller and control method When an engine (1) is in an idle state and the engine rotation speed exceeds a predetermined value, fuel supply is stopped. In this state, fuel supply is resumed when there is a shift to a non-idle state or when the engine rotation speed falls below a pre... | 11/21/2000 |
| 6098605 | Method and apparatus for operation of an internal combustion engine in a true closed loop fuel control A true closed-loop air/fuel ratio control system for an internal combustion engine which uses a cylinder air charge percentage value also known as a cylinder or engine load value, is used to control the air/fuel ratio of said engine in response to the dif... | 08/08/2000 |
| 6055971 | Plateau linearization curves with proportional/integral/derivative control theory A proportional/integral/derivative control system is provided for controlling the operating parameters of a feedback system according to the difference between a measured value from a component of the system and a target set point. The control system empl... | 05/02/2000 |
| 6019093 | Air-fuel ratio control system for internal combustion engines An air-fuel ratio control system for an internal combustion engine includes an air-fuel ratio sensor arranged in the exhaust system of the engine, for detecting the air-fuel ratio of exhaust gases from the engine. An ECU calculates an adaptive control amo... | 02/01/2000 |
| 5960773 | Engine control apparatus When feedback control of air/fuel ratio is not being performed in an engine and the engine is idling, the fuel supply amount is increased according to the engine coolant temperature. When feedback control of air/fuel ratio is not being performed and the e... | 10/05/1999 |
| 5950607 | Evaporated fuel treatment device of an engine An evaporated fuel treatment device comprising a purge control valve for controllling an amount of fuel vapor fed into the intake passage from a charcoal canister. At the time of restarting a purge action, the purge action is restarted by a low purge rate... | 09/14/1999 |
| 5934248 | Air-fuel ratio controller for internal combustion engine An air-fuel ratio controller for an internal combustion engine, which controller is capable of: properly correcting an air-fuel ratio after a start-up explosion; preventing inconveniences such as occurrence of an engine stall, a decrease in an engine rota... | 08/10/1999 |
| 5918583 | Air-fuel ratio control device for internal combustion engine An air-fuel ratio control device for an internal combustion engine of a vehicle is disclosed. The device controls the air-fuel ratio with a target value which is larger than the stoichiometric air-fuel ratio, as a control center, in an idle condition. The... | 07/06/1999 |
| 5774822 | Fuel metering control system for internal combustion engine A system for controlling fuel metering for a multi-cylinder internal combustion engine having a feedback loop which has an adaptive controller and an adaptation mechanism coupled to said adaptive controller for estimating controller parameters θ. The ada... | 06/30/1998 |
| 5720265 | Fuel metering control system for internal combustion engine A fuel metering control system for an internal combustion engine, having a feedback loop. In the system, the quantity of fuel injection (Tim) to be supplied to the engine (plant) is determined outside of the feedback loop. A first feedback correction coef... | 02/24/1998 |
| 5720266 | Control system for a gaseous fuel internal combustion engine utilizing PID gain scheduling parameters A fuel control system is provided for use with an internal combustion engine having at least one cylinder, a source of gaseous fuel and an intake passageway for fluidly connecting the air intake to the combustion cylinder. The control system includes a ga... | 02/24/1998 |
| 5685283 | Air-fuel ratio control system for engine An air-fuel ratio control system for an engine for controlling an amount of a fuel mixture to be delivered into a combustion chamber so that an air-fuel ratio of the fuel mixture attains a target air-fuel ratio performs selecting one of a plurality of pre... | 11/11/1997 |
| 5638800 | Method and apparatus for controlling air-fuel ratio learning of an internal combustion engine An object of the present invention is to carry out air-fuel ratio learning to a high accuracy even in a region such as the idling region wherein the number of acquisitions of air-fuel ratio feedback correction values within a predetermined period is small... | 06/17/1997 |
| 5615660 | Engine air-fuel ratio controller A warmup fuel amount corresponding to a predetermined heavy fuel is set to control an air-fuel ratio of an air-fuel mixture supplied to an engine during warmup. A correction amount based on a difference between a post-warmup engine speed variation and a f... | 04/01/1997 |
