Quotables
"There is no reason anyone would want a computer in their home."
Ken Olsen, chairman and founder of Digital Equipment Corporation ; 1977
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.
| Number | Title | Issue Date |
| 5488311 | Apparatus and method for measuring alcohol concentration of liquid blended with alcohol applicable to an automotive vehicle mounted internal combustion engine The electrodes of an electrostatic capacitor which is used to determine the alcohol concentration in a mixture of gasoline and alcohol, are connected with a frequency oscillator of the LC type which applies a signal having a frequency which is equal to or... | 01/30/1996 |
| 5419206 | Phase independent torque detection and processing circuit for sensing device A circuit for detecting and processing a signal from a sensing device such as a torque sensor is disclosed in which a first peak hold circuit detects a first peak value of an output AC signal of an oscillator and a second peak hold circuit detects the pea... | 05/30/1995 |
| 5408648 | Method and apparatus for diagnosing CPU for CPU-runaway-preventing circuit A method and apparatus for preventing runaway of CPU using a battery voltage as a power source voltage, in which the operation of CPU and the power source voltage of the CPU are inspected at the abnormal operation of the CPU and/or at the abnormal reducti... | 04/18/1995 |
| 5355858 | Assist-air type fuel injection method and device for internal combustion engine In an assist-air type fuel injection device for an internal combustion engine in which an assist-air for atomizing fuel is supplied toward an injected fuel on the lower stream of a nozzle hole of a fuel injection valve, a pressure detection part for detec... | 10/18/1994 |
| 5353764 | Electronically controlled fuel supply method and device for internal combustion engine Based on a combustion pressure detected by a cylinder internal pressure sensor, a mean effective pressure Pi is calculated and a fluctuation amount ƊPi of the mean effective pressure Pi is calculated. The level of a predetermined frequency component of t... | 10/11/1994 |
| 5350034 | Apparatus for controlling opening angle of throttle valve in internal combustion engine An apparatus for controlling an opening angle of a throttle valve in an internal combustion engine. When an accelerator pedal is depressed by a vehicular driver, an accelerator drum attached onto an end wall of a main body of a single motor is rotated via... | 09/27/1994 |
| 5343745 | Apparatus and method for detecting intake air quantity for internal combustion engine An apparatus for detecting an intake air quantity for an internal, combustion engine and method therefor are disclosed in which a passed time from a time at which a power supply to a temperature sensitive airflow meter of a bridge circuit is turned on is ... | 09/06/1994 |
| 5333943 | Method and system for anti-lock braking in automobile by measuring brake torque In an anti-lock braking apparatus, by detecting brake torque at a wheel and controlling the braking force of a wheel brake unit, a locked state of the wheel can be quickly detected to thus enable braking control with fast response characteristics. Also, b... | 08/02/1994 |
| 5325946 | Control device and control method for automatic transmission for vehicle In a driving zone where a torque converter is to be locked up, a lockup force of a lockup clutch is weakened in the deceleration driving state compared with that in the non-deceleration driving state. Moreover, during transition from the deceleration driv... | 07/05/1994 |
| 5318159 | Control device and control method using torque feedback of a lock-up clutch in an automatic transmission In an automatic transmission provided with a hydraulic lockup clutch which can directly and mechanically engage an input shaft with an output shaft of a torque converter, input torque of the above torque converter is detected and an working oil pressure s... | 06/07/1994 |
| 5309790 | System and method for controlling working hydraulic pressure for automatic transmission with fluid transmission device A system and method for controlling a working hydraulic pressure supplied to a mechanical power transmission applicable to an automative vehicle, the power transmission having a fluid power transmitting device such as a torque converter, in which a target... | 05/10/1994 |
| 5297046 | System and method for learning and controlling air/fuel mixture ratio for internal combustion engine A system and method for learning and controlling an air/fuel mixture ratio for an internal combustion engine are disclosed which can achieve the compatibility of both learning convergence characteristic and accuracy of learning and which can prevent a ste... | 03/22/1994 |
| 5292288 | Speed-changing hydraulic oil pressure control apparatus for an automatic transmission of an automobile A speed-changing hydraulic oil pressure control apparatus for controlling speed-changing hydraulic oil pressure according to a transition state of the speed change in an automatic transmission. The controllability is improved by detecting in advance the t... | 03/08/1994 |
| 5285639 | Method and system for controlling secondary air for internal combustion engine Secondary air is supplied to a position upstream of a catalyst disposed in an exhaust passage of an engine. An oxygen sensor is disposed between a secondary air supply portion of the exhaust passage and the catalyst. The supply amount of the secondary air... | 02/15/1994 |
| 5276625 | System for detecting and adjusting for variation in cylinder pressure in internal combustion engine A cylinder pressure detecting system includes a plurality of pressure sensors, each of which is provided for monitoring pressure in one of plurality of cylinders. The system performs data sampling of detection values produced by one of the pressure sensor... | 01/04/1994 |
| 5269272 | Engine idling speed control apparatus An apparatus for controlling the idling speed of an internal combustion engine. The apparatus comprises sensors for producing electrical signals indicative of sensed engine operating conditions including a sensed amount of air permitted to enter the engin... | 12/14/1993 |
| 5265022 | Engine protecting system A system for protecting an engine equipped with an electronically controlled fuel injection apparatus, in which a battery voltage is detected. When the detected battery voltage is smaller than a predetermined reference value, performance of the engine is ... | 11/23/1993 |
| 5261297 | Control system for automotive automatic transmission A control system for automatic transmission is provided in a motor vehicle having an internal combustion engine and an automatic transmission associated with the engine. The engine is operable on a fuel which is a mixture of gasoline and alcohol. The cont... | 11/16/1993 |
| 5259241 | Display unit for displaying the output of a vehicle engine A display unit for displaying the output of a vehicle engine measures and displays the output or torque of the engine during a normal running state. The unit calculates and displays the output of the engine according to an intake air quantity and engine rotati... | 11/09/1993 |
| 5261078 | System for transferring data between program development computer and control unit via specific memory addresses of interface computer A development computer or first computer provided with a program development-supporting tool for checking an operation of a new control program written by a high-level language is disposed independently from a computer to be developed or second computer. ... | 11/09/1993 |
| 5251437 | Method and system for controlling air/fuel ratio for internal combustion engine An air/fuel ratio control method and system for an internal combustion engine employing first and second air/fuel ratio sensors, respectively upstream and downstream of a catalytic converter, sets and stores learnt correction values, by learning through a... | 10/12/1993 |
| 5249558 | Idle speed control system for internal combustion engine An idle speed control system for an automotive internal combustion engine having an intake air passageway through which intake air flow to be inducted into engine cylinders. The idle speed control system is comprised of an auxiliary air control valve oper... | 10/05/1993 |
| 5243951 | Method of and apparatus for learning and controlling air-fuel ratio of internal combustion engine A system for learning and controlling the air-fuel ratio of each of divided regions of an operating range of an engine employs a plurality of learning maps in which the engine operating range is divided into regions of different sizes, and these regions a... | 09/14/1993 |
| 5239966 | Electronic control fuel injection apparatus for two-cycle engine An electronic control fuel injection apparatus for a crank chamber compression type 2-cycle engine which compensates a fuel injection amount predetermined by an opening degree of an engine intake air system and an engine speed in response to a fuel amount... | 08/31/1993 |
| 5235957 | Diagnosing device and diagnosing method in air/fuel ratio control device for internal combustion engine In a device for feedback control of an air/fuel ratio using an oxygen sensor for detecting oxygen concentration in exhaust gas, two different reference levels for diagnosis are set according to a detection signal level of the above oxygen sensor. And a re... | 08/17/1993 |
| 5235947 | System and method for controlling idling speed for internal combustion engine A system and method for controlling an engine idling speed for an internal combustion engine are disclosed in which during the setting of a differential control value ISCd based on a variation speed in an actual engine revolution speed Ne, an a... | 08/17/1993 |
| 5233965 | Fuel injection quantity control system for starting a two-cycle engine A fuel injection quantity control system for starting a two-cycle engine. The control system calculates an initial fuel injection quantity by correcting a basic fuel injection quantity according to a subtrahend to be applied to a time factor which is dete... | 08/10/1993 |
| 5226323 | Method of and an apparatus for displaying the output of an internal combustion engine A method of and an apparatus for measuring and displaying the output of an internal combustion engine of a vehicle while the vehicle is moving. An intake air flow quantity Q and a rotation speed N of the engine are calculated to determine an intake air qu... | 07/13/1993 |
| 5227975 | Air/fuel ratio feedback control system for internal combustion engine An air/fuel ratio feedback control system for an internal combustion engine sets an air/fuel ratio feedback correction coefficient on the basis of an air/fuel ratio for an air/fuel mixture introduced into a combustion chamber of the engine, to cause the a... | 07/13/1993 |
| 5224452 | Air-fuel ratio control system of internal combustion engine An air-fuel ratio control system of an automotive internal combustion engine comprises a surge detecting device for detecting the surge level of the engine under a lean combustion operation; a lean combustion limit detecting device which issues a first si... | 07/06/1993 |
| 5224461 | Self-diagnosing apparatus and method for fuel supply control system applicable to internal combustion engine A self diagnosing apparatus and method for a fuel supply control system in an internal comustion engine are disclosed in which since an air/fuel mixture ratio feedback controlled variable is set so that an actual air/fuel mixture ratio is approached to a ... | 07/06/1993 |
| 5211148 | Method of and an apparatus for controlling assist air in an internal combustion engine An apparatus supplies assist air toward an injection nozzle of a fuel injection valve of an internal combustion engine, to atomize an injected fuel. The apparatus starts and stops supplying the assist air according to engine operating conditions while cor... | 05/18/1993 |
| 5207204 | Method of and an apparatus for supplying assist air into a combustion chamber direct injecting fuel injection valve An engine has a combustion chamber and a fuel injection valve for directly injecting a fuel into the combustion chamber. An assist air supplying apparatus supplies assist air to atomize the fuel injected by the fuel injection valve. Assist air supply pres... | 05/04/1993 |
| 5205151 | Alcohol concentration sensor testing apparatus An apparatus for testing an alcohol concentration sensor used in measuring an alcohol concentration of a fluid containing alcohol. The alcohol concentration sensor includes a capacitive probe having a capacity dependent upon the alcohol concentration of t... | 04/27/1993 |
| 5203868 | Wire disconnection diagnosis apparatus of fuel injector drive circuit The present invention relates to an apparatus for diagnosing the presence or absence of a wire disconnection in a fuel injector drive circuit. When driving the solenoid of a fuel injector via a transistor by a drive pulse signal, the counter electromotive volt... | 04/20/1993 |
| 5198982 | Automotive vehicle control system for predicting road friction level A traction control system for an automotive vehicle housing device for adjusting the driving torque delivered to driven wheels from an automotive internal combustion engine, and sensor for detecting vehicular deceleration and acceleration for generating a... | 03/30/1993 |
| 5193339 | Method of and an apparatus for controlling the air-fuel ratio of an internal combustion engine An air-fuel ratio controlling apparatus carries out air-fuel ratio feedback control with the use of air-fuel ratio sensors disposed on the upsteam and downstream sides of a three-way catalytic converter. An air-fuel ratio feedback correction coefficient c... | 03/16/1993 |
| 5191869 | Gasoline nature sensing system A system for sensing the nature of gasoline is disclosed, which comprises a capacitance type sensor for producing a first information signal representative of the dielectric constant of the gasoline; a temperature sensor for producing a second information... | 03/09/1993 |
| 5191789 | Method and system for detecting intake air flow rate in internal combustion engine coupled with supercharger An internal combustion engine coupled with a supercharger includes an air flow meter positioned upstream of the compressor of the supercharger. The engine also has an intercooler disposed between the compressor and a throttle valve. Variation in an amount... | 03/09/1993 |
| 5178332 | Fuel injection valve A fuel injection valve has a flat injection hole plate arranged downstream of a valve seat on which a valve body is seated. A plurality of injection holes are formed through the injection hole plate in such a manner that the injection holes are inclined w... | 01/12/1993 |
