Gm Global Technolgoy Operations, Inc.

Ian L Hanna

Jonathan R Schwarz

Gregory E Smith

Damon R Frisch

Brian James Koch

Christopher J Twarog

Michael G Leffert

Neal A Chaperon

Thomas K Dye

Eric L Mayberry

Trista K Schieffer

Devon Robert Hall

John A Turzewski

Bryan W Shevock

Tyler J Pilgeram

A method and controller for controlling an electronically controlled transmission in a vehicle propulsion system of a vehicle. The method includes disengaging a clutch in the transmission to prevent a power flow through the transmission in response to an upshift paddle selector and a downshift paddle selector both being actuated together for a first predetermined time period, and changing a ratio of the transmission in response to an actuation of one of the upshift paddle selector and the downshift paddle selector while the clutch in the transmission is disengaged to prevent a power flow through the transmission.

Method and control system for controlling an electronically controlled transmission in a vehicle propulsion system

A method for displaying brake power status of a vehicle is disclosed. The method obtains vehicle status data from at least one onboard subsystem, and generates a power indicator based on the status data. The power indicator includes a charge indicator region defined by a stationary charging boundary and by a dynamic transition threshold, a friction brake indicator region adjacent to the charge indicator region and defined by the dynamic transition threshold and by a stationary friction braking boundary, and a real-time power level indicator responsive to the vehicle status data to indicate a position in the charge indicator region or the friction brake indicator region. The transition threshold moves in response to changes in the status data over time, resulting in a moving boundary between the charge indicator region and the friction brake indicator region. The power indicator is displayed on an electronic display element onboard the vehicle.

Regenerative and friction power indicator for a vehicle braking system

A method for predicting the duration of a future charging process for a vehicle battery. The method comprises estimating a future charge amount of the battery corresponding to the start of the future charging process. The method further comprises estimating a future temperature of the battery. The method still further comprises determining a future charging power or a characteristic thereof to be applied to the battery during the future charging process, wherein the future charging power or characteristic thereof is based on the estimated future charge amount and the estimated future temperature and is representative of a charging amount or characteristic thereof that will maintain the temperature of the battery at or below a threshold temperature during the future charging process. The method still further comprises predicting a duration of the future charging process based on the estimated future charge amount and the determined future charging power or characteristic thereof.

Method for predicting charging process duration

An exemplary system and method for use in cold environments in order to heat a high voltage vehicle battery, such as the type commonly found in hybrid vehicles. Some high voltage vehicle batteries&#x2014;like those based on lithium-ion chemistries&#x2014;perform better when their battery temperature is in a certain temperature range. In an exemplary embodiment, a battery heating system includes a switch, a battery heater and a high voltage vehicle battery, and initially uses electrical power from an external power source to heat the battery and then uses electrical power from an internal power source to heat the battery. The switch determines which power source is used to heat the battery, and may be dictated by whether the battery heating system is plugged into the external power source and/or a vehicle propulsion system is active, to cite several possibilities.

Method for heating a high voltage vehicle battery

A method for notifying, indicating or otherwise alerting a driver when it may be desirable to switch to a different transfer case mode. According to an exemplary embodiment, the method uses one or more environmental and/or vehicle conditions to evaluate a current transfer case mode and to determine if it is the most preferable or optimal mode. If the current transfer case mode is not optimal, then the method may recommend that the driver manually switch transfer case modes by notifying or alerting them through a visual and/or audio message. In one example, the method recommends a transition from a four-wheel mode to a two-wheel mode, or vice-versa, with a visual message on an instrument panel gauge.

Method for use with vehicle having selectable transfer case

A method and system for heating a vehicle battery, such as the type used for vehicle propulsion in a hybrid electric vehicle (HEV). Depending on the battery chemistry involved, such batteries may not perform well in extremely cold environments. For instance, a lithium-ion battery can exhibit a high internal resistance when the battery is extremely cold, which in turn can negatively affect the available power or other capabilities of the battery. According to an exemplary embodiment, the method and system take advantage of the high internal resistance in a cold vehicle battery by purposely cycling electrical current in and/or out of the battery so that heat is created. This heat warms up the vehicle battery and thereby improves its overall performance and capabilities.

Method and system for heating a vehicle battery

Methods and systems are provided for vehicles having a rechargeable energy storage system (RESS). A first sensor is configured to measure an ambient temperature for the vehicle. A second sensor is configured to measure a temperature of the RESS. The processor is coupled to the first sensor and the second sensor, and is configured to at least facilitate taking an action based on an expected degradation of the RESS after vehicle key-off based at least in part on the ambient temperature and the RESS temperature.

Rechargeable energy storage system management for vehicles

A system and method for controlling a state-of-charge (SOC) of a vehicle battery, such as a high-voltage battery used by a hybrid electric vehicle (HEV) for vehicle propulsion, so that the SOC is maintained within a desired SOC range that is temperature-dependent. In an exemplary embodiment, the system and method use a battery temperature prediction to determine a desired SOC range, and then control the amount of charge on the vehicle battery such that the SOC is maintained within the desired SOC range. As the battery temperature prediction goes lower (i.e., as it gets colder), the desired SOC range may need to be adjusted or shifted upwards in order to account for increased internal battery resistance and to ensure that the vehicle battery has enough power to start the vehicle. Similarly, as the battery temperature prediction goes higher (i.e., as it gets warmer), the desired SOC range may need to be adjusted or shifted downwards in order to reduce degradation effects and improve battery. The exemplary system and method control the SOC of the vehicle battery and may seek to optimize a number of different parameters, including battery life, battery performance and/or vehicle fuel economy.

Method of controlling a state-of-charge (SOC) of a vehicle battery

A thermal conditioning system for the energy storage system of a hybrid vehicle. At least one auxiliary air source, other than a permanently open air source, has a selectively operable actuator door which either connects or disconnects the auxiliary air source to the energy storage system blower, the air flow being selected to optimally temperature condition the energy storage system. The auxiliary air source preferably includes the HVAC ducting.

Air-based hybrid battery thermal conditioning system

A vehicle gauge and method for displaying an electric mode status of a vehicle that can operate in both an electric mode and one or more alternative modes. According to one exemplary embodiment, the method evaluates a number of throttle and non-throttle conditions and allocates portions of the total range of the vehicle gauge to these conditions. Based on these allocations, the method determines an overall vehicle gauge position that is representative of the electric mode status of the vehicle and provides this to the vehicle gauge so that the electric mode status can be displayed to the driver.

Growing community of inventors

Clarkston, MI, United States of America

Ian L Hanna