Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7352072 | Method for the closed-loop speed control of an internal combustion engine-generator unit A method for the closed-loop speed control of an internal combustion engine-generator unit with a coupling, in which method, when the engagement of the coupling is detected, a change is made from a first set of parameters to a second set of parameters. In the second... | 04/01/2008 |
| 7325532 | Method 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 |
| 7263970 | Intake flow control apparatus for an internal combustion engine An intake flow control apparatus for an internal combustion engine eases operation of an air flow regulator and permits use of a short intake passage, thus providing a high output. The intake flow control apparatus includes an air routing member having an intake pas... | 09/04/2007 |
| 7254477 | Apparatus and method for engine performance evaluation A system that measures the density of the air in the intake of an internal combustion engine and calculates the gain or loss in performance provides a display to an operator in real time in a single, quickly assimilated reading. A display can indicate the combined p... | 08/07/2007 |
| 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 |
| 7035729 | Method for controlling the speed of a torque-controlled internal combustion engine A method for controlling the speed of a torque-controlled internal combustion engine in which the generation of the drive torque is regulated by actuators which are controlled from a control value of the instantaneous torque and by a control value of the predicted t... | 04/25/2006 |
| 7017548 | Engine controller An unstable idling state immediately after engine start is stabilized. The difference between a target idling engine speed corresponding to the cooling water temperature and an actual engine speed is integrated. The ignition timing is changed toward advance or retar... | 03/28/2006 |
| 7013868 | Accelerator signal offset system A disclosed accelerator pedal offset system includes a first connector that can be coupled to an accelerator pedal of a motor vehicle and a second connector that can be coupled, in place of the accelerator pedal, to an engine control module of the vehicle. The secon... | 03/21/2006 |
| 6994074 | Method for controlling an internal combustion engine generator unit In a method of controlling rotational speed for an internal combustion-generator unit, a filtered rotational speed is monitored with respect to rotational speed oscillations. When such oscillations are detectd, their frequency is compared with a first limit value, a... | 02/07/2006 |
| 6990400 | Load anticipating engine/transmission control system An engine and transmission control system is responsive to manipulation of manually operated control devices which can cause actions which result in increased load on the vehicle engine, before the engine actually begins to be effected by the load increase. The cont... | 01/24/2006 |
| 6978859 | Power steering system A power steering system includes a reversible pump for supplying hydraulic fluid to pressure chambers of a power cylinder through first and second passages, an assisting-force detector for detecting a steering assisting force to be provided to a steering wheel, a mo... | 12/27/2005 |
| 6959691 | Device and method for controlling air volume during idle operation To permit easy and adequate setting of a gain in an internal combustion engine (hereinafter be called an “engine”) for the surer stabilization of an idle speed, the present invention provides a device for controlling an air volume during an idle operation of the... | 11/01/2005 |
| 6950735 | Load anticipating engine/transmission control system An engine and transmission control system is responsive to manipulation of manually operated control devices which can cause actions which result in increased load on the vehicle engine, before the engine actually begins to be effected by the load increase. The cont... | 09/27/2005 |
| 6938609 | Method and device for controlling the drive unit of a motor vehicle A method and arrangement for controlling the drive unit of a vehicle is suggested wherein a limiter is provided to limit the engine rpm to a pregiven limit value in at least one operating state. The limiter is controlled to be ineffective in this at least one operat... | 09/06/2005 |
| 6845749 | Start-up control device for engine An internal combustion engine (1) is provided with a three-way catalytic converter (16) which purifies exhaust gas, a spark plug (6) which ignites a gaseous mixture and a throttle (11) which regulates an intake air flow rate. When the eng... | 01/25/2005 |
| 6820589 | Idle speed control method and system A method and system for generating an idle control signal for an internal combustion engine is disclosed. Rotational speed, n, of the engine is measured. Combustion generated torque τind is estimated as a function of the measured engine rotational speed,... | 11/23/2004 |
| 6786195 | Method of controlling the rotational speed of a drive unit In a method of controlling a drive unit, particularly an internal-combustion engine generator unit, in addition to first and second controlling devices, a third controlling device is provided for computing a third injection quantity. One of the controlling devices i... | 09/07/2004 |
| 6659079 | Engine idle speed control A method of controlling the idle speed of an internal combustion engine including, in response to the engine speed being below a predetermined level: determining the rate of change of the speed of the engine; selecting an idle entry set-point as a functio... | 12/09/2003 |
| 6591808 | Adaptive PID control method and system for internal combustion engine rotation speed pulsation damping Within both a method for operating an internal combustion engine and a system for operating the internal combustion engine there is provided an engine rotation speed pulsation damping within the internal combustion engine through use of a PID controller w... | 07/15/2003 |
| 6587776 | Method and arrangement for controlling the rpm of a drive unit The invention is directed to a method and an arrangement for the rpm control of a drive unit. A control is provided having at least two components. At the start of the drive unit, these two components are activated one after the other.... | 07/01/2003 |
| 6516777 | Method and system for controlling internal combustion engine A method of controlling an internal combustion engine having an electromagnetically actuated intake valve for a cylinder. The controlling method comprises (a) forming first and second control regions in accordance with an engine speed of the engine, the f... | 02/11/2003 |
| 6273063 | Apparatus and method for controlling idle rotation speed of an internal combustion engine When canister purge is started during feedback control of idle rotation speed, a feedback control value for immediately prior to starting purge is stored, and when purge is stopped, the feedback operating amount is changed stepwise up to the stored value.... | 08/14/2001 |
| 6250282 | Idle rotation speed learning control method and apparatus of an electronically controlled throttle type internal combustion engine With an electronically controlled throttle type internal combustion engine, where a target opening of a throttle valve is set according to a required output of the engine, and the throttle valve is opened and closed with an actuator so as to obtain a targ... | 06/26/2001 |
| 6202629 | Engine speed governor having improved low idle speed stability A system and method for controlling the speed of an engine, or a speed governor, receives an error signal indicative of the difference between the actual engine speed and a commanded engine speed. This error signal is passed through a linear controller th... | 03/20/2001 |
| 6173696 | Virtual power steering switch A computer-implemented apparatus and method for inferring power steering load and for controlling airflow to an engine of a vehicle having an engine speed. A sensor which is connected to the engine senses the engine speed of the engine. An engine speed re... | 01/16/2001 |
| 6164265 | Feedback load control for power steering A method for controlling the idle of an engine includes the step of determining a proportional airflow term by monitoring the difference between an engine idle speed and a target idle speed. In addition, an integral airflow term is determined. The method ... | 12/26/2000 |
| 6009852 | Engine idle rotation speed controller Engine rotation speed during idle running is feedback-controlled. A second target rotation speed which progressively decreases towards a first target rotation speed from a predetermined engine rotation speed, is set. The engine rotation speed is feedback-... | 01/04/2000 |
| 5995879 | Engine command selector and method of operating same An engine speed command selector and method of selecting an engine speed command signal from two command signals includes a selector switch having a local and a remote position, a local low indicator, a local high indicator, a local mode indicator and a r... | 11/30/1999 |
| 5685270 | Idle speed control system and method for diesel engine A diesel engine idle speed control system and method wherein a preset running characteristic map is corrected by a learning value updated on the basis of the output of a PID under predetermined conditions for each of different engine load modes, thereby d... | 11/11/1997 |
| 5669351 | Engine throttle control with varying control constants ECU performs a feedback control on a d.c. motor by a PID feedback control thereby to reduce errors between an actual throttle opening and a command throttle opening. PID control constants Kp, Ti and Td in the PID control are determined in accordance with ... | 09/23/1997 |
| 5662085 | Method and device for controlling the speed of an internal combustion engine during a deceleration phase The process assures the correction of the control of an actuator acting on the speed as a function of the error E=Nc -N between a set-point speed (Nc) and the actual speed (N), and of the time derivative (E') of this error. A correct... | 09/02/1997 |
| 5590630 | Idling speed control system and the method thereof There is provided a system for controlling an idling speed of an engine, comprising: engine speed detecting means for detecting an actual engine speed, integration amount calculating means for calculating an integration amount based on an error between th... | 01/07/1997 |
| 5495835 | Idling speed control method and apparatus for an internal combustion engine In an idling speed control method for adjusting the amount of intake air supplied to an internal combustion engine so that the engine speed matches a target speed when the engine is idling, a value of a stroke period or speed of the engine is detected. Fu... | 03/05/1996 |
| 5408871 | Idle air control system diagnostic An idle air control system diagnostic for an internal combustion engine which utilizes RPM, engine timing and intake airflow measurements to detect the presence of idle RPM faults and eliminate or verify the idle air control system as the fault source. En... | 04/25/1995 |
| 5372110 | Method and device for closed-loop control of the power of an internal combustion engine propelling a motor vehicle According to the invention, a) from the position of an accelerator pedal actuated by the driver, a value is extracted of a power (Pd) requested by this driver, b) in various vehicle operating phases, a base power (Pb) absorbed by the... | 12/13/1994 |
| 5251598 | System for regulating the idling speed of an internal-combustion engine A system for regulating the idling speed of an internal combustion engine, in particular a self-ignitable internal-combustion engine, includes a controller that has at least one integral component and one differential component. The response characteristi... | 10/12/1993 |
| 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 |
| 5216610 | Engine rotation speed control apparatus having auxiliary air controller An engine speed control apparatus having an auxiliary air amount controller is disclosed. The apparatus has an actuator which is attached to an engine intake manifold so as to bypass a throttle valve and controls a flow rate of an auxiliary air and a cont... | 06/01/1993 |
| 5213077 | Gain adjusting device for PID controller for controlling rotational speed of internal combustion engine A plurality of characteristic variables concerning the rotational speed are detected so as to be used for inference, and the plurality of characteristic variables are divided into a plurality of sets. Groups of rules each indicating the relationship betwe... | 05/25/1993 |
| 5191865 | Engine idle control system for vehicle An engine idle control system for a vehicle causes the engine speed to converge on a target idling speed by feedback control when the engine idles. Whether the engine is revolving by itself or is being driven by the vehicle is detected, and the engine spe... | 03/09/1993 |
