Abstract: A display system for providing information display. The display system includes a display device, and control circuitry that controls the display device to display a gauge graphic including a scale for a vehicle parameter and a needle movable on the scale. The scale comprises a plurality of regions. The control circuitry further receives a first value of the vehicle parameter. The control circuitry further controls, based on a determination that the first value is between a first predetermined threshold and a second predetermined threshold, the display of a background color gradient on a first region of the plurality of regions based on the first value. The control circuitry further extends the background color gradient on a second region of the plurality of regions based on a determination that the first value exceeds the second predetermined threshold. The second region displays a solid color based on the background color gradient.

Abstract: A display system for providing information display. The display system includes a display device, and control circuitry that controls the display device to display a gauge graphic including a scale for a vehicle parameter and a needle movable on the scale. The scale comprises a plurality of regions. The control circuitry further receives a first value of the vehicle parameter. The control circuitry further controls, based on a determination that the first value is between a first predetermined threshold and a second predetermined threshold, the display of a background color gradient on a first region of the plurality of regions based on the first value. The control circuitry further extends the background color gradient on a second region of the plurality of regions based on a determination that the first value exceeds the second predetermined threshold. The second region displays a solid color based on the background color gradient.

Abstract: A method and a system for controlling an intake system for an engine is disclosed. The method includes steps for selecting an intake mode according to the current engine speed and the current cylinder mode. The method may be used for controlling an intake system in conjunction with a multi-displacement engine having one or more cylinders that may be deactivated.

Abstract: An engine idle stability control method and system using feedback from alternator of a motor vehicle is described. An excitation current of the alternator is detected and used to predict an alternator torque value. The predicted alternator torque is used to determine an adjustment to engine torque output. Engine torque output is adjusted to compensate for the predicted alternator torque and engine idle stability is maintained.

Abstract: An engine idle stability control method and system using feedback from alternator of a motor vehicle is described. An excitation current of the alternator is detected and used to predict an alternator torque value. The predicted alternator torque is used to determine an adjustment to engine torque output. Engine torque output is adjusted to compensate for the predicted alternator torque and engine idle stability is maintained.

Abstract: A system to cool exhaust gas entering a catalytic converter in a turbocharged engine is disclosed. An air bypass valve is controlled to vent pressurized air to the atmosphere to overrev a turbocharger when exhaust gas exceeds a predetermined temperature. The rotation of the turbocharger increases to maintain a desired boost pressure. When this occurs, the turbocharger absorbs more energy from the exhaust gas to maintain the desired boost pressure. Thus, the exhaust gas entering the catalytic converter is cooled.

Abstract: A method of controlling a cylinder deactivation system is disclosed. Information from one or more sensors is received by a control unit. The control unit compares the current values of a parameter with one or more prohibited ranges in order to determine if cylinder deactivation should be prohibited. The one or more prohibited ranges are discrete ranges, each with a lower limit and an upper limit.

Abstract: A method of controlling a cylinder deactivation system is disclosed. Information from one or more sensors is received by a control unit. The control unit compares the current values of a parameter with one or more prohibited ranges in order to determine if cylinder deactivation should be prohibited. The one or more prohibited ranges are discrete ranges, each with a lower limit and an upper limit.

Abstract: A method of controlling a cylinder deactivation system is disclosed. Information from one or more sensors is received by a control unit. The control unit compares the current values of a parameter with one or more prohibited ranges in order to determine if cylinder deactivation should be prohibited. The one or more prohibited ranges are discrete ranges, each with a lower limit and an upper limit.

Abstract: A method and a system for controlling an intake system for an engine is disclosed. The method includes steps for selecting an intake mode according to the current engine speed and the current cylinder mode. The method may be used for controlling an intake system in conjunction with a multi-displacement engine having one or more cylinders that may be deactivated.

Abstract: A system to cool exhaust gas entering a catalytic converter in a turbocharged engine is disclosed. An air bypass valve is controlled to vent pressurized air to the atmosphere to overrev a turbocharger when exhaust gas exceeds a predetermined temperature. The rotation of the turbocharger increases to maintain a desired boost pressure. When this occurs, the turbocharger absorbs more energy from the exhaust gas to maintain the desired boost pressure. Thus, the exhaust gas entering the catalytic converter is cooled.

Abstract: A method of controlling a cylinder deactivation system is disclosed. Information from one or more sensors is received by a control unit. The control unit compares the current values of a parameter with one or more prohibited ranges in order to determine if cylinder deactivation should be prohibited. The one or more prohibited ranges are discrete ranges, each with a lower limit and an upper limit.

Abstract: A method of controlling a fuel injector is disclosed. Multiple airflow rate regimes are associated with different fuel injection control methods. In one example, a low airflow rate regime is associated with a speed density control method and a high airflow rate regime is associated with an airflow meter control method.

Abstract: A method of controlling a fuel injector is disclosed. Multiple airflow rate regimes are associated with different fuel injection control methods. In one example, a low airflow rate regime is associated with a speed density control method and a high airflow rate regime is associated with an airflow meter control method.