摘要:
A method is provided for controlling an engine having an intake manifold and an outlet control device coupled to the manifold for controlling flow exiting the manifold and entering at least one cylinder of the engine. The engine further includes an inlet control device for controlling flow entering the manifold. The method includes providing an engine command; calculating a desired cylinder charge based on said command; and adjusting the outlet control device to provide said desired cylinder charge. The engine command may be, for example, a driver command, such as a driver torque command. Further, the outlet control device may be implement in with a variety of mechanisms. For example, in one embodiment the outlet control device is a valve of the engine having a variable lift. In one embodiment the outlet device is a valve having variable timing. Likewise, the inlet device may be adjusted in response to a variety of parameters. For example, in one embodiment the inlet device is adjusted based on manifold pressure. Still further, engine control may also include adjusting of the inlet control device.
摘要:
Systems and methods for communicating a state of a battery to a vehicle controller are disclosed. In one example, a battery pack outputs a signal indicative of an amount of capability the battery pack has to source or sink current at present operating conditions. The system and method may improve vehicle drivability and reduce battery pack degradation.
摘要:
Systems and methods for adjusting sampling and switching rates of a battery management system are provided. For example, a rate at which different battery cells of a battery cell stack are in communication with an analog to digital converter may be adjusted in response to conditions of a battery cell.
摘要:
Exemplary embodiments of the present invention provide flexible, multi-voltage battery modules having multiple cells that are nested together. The cells can be, for example, cylindrical lithium ion cells. To increase cell package density, the cells can be disposed in a nested configuration so that adjacent cell centers form equilateral triangles. The cells can be placed in a housing or case with interlocking tabs that allow multiple modules to be connected together. Within a module, the cells can be connected in different configurations by buss bars at the top and the bottom of the battery cells. The different configurations may provide different voltages for the module.
摘要:
In an exemplary embodiment, a method to control excessive temperature changes in a coolant circuit includes providing a coolant circuit including a bypass flow pathway bypassing a heat exchanger, said coolant circuit at an elevated operating temperature; providing an adjustable coolant flow through said bypass flow pathway and said heat exchanger; providing a coolant pump in said coolant circuit; determining a temperature change in said coolant circuit in response to initiating a coolant flow from said heat exchanger into said coolant circuit, said temperature change greater than predetermined limit; and in response to said determined temperature change, adjusting at least one or more of said coolant pump speed and said coolant flow to maintain said coolant circuit within a predetermined temperature range.
摘要:
A method for controlling an engine having an intake manifold and an outlet control device coupled to the manifold for controlling flow exiting the manifold and entering at least one cylinder of the engine, the engine further having an inlet control device for controlling flow entering the manifold, the method comprising determining a driver torque command; calculating a desired cylinder charge based on said driver torque command; adjusting the outlet control device to provide said desired cylinder charge; and adjusting the inlet control device based on intake manifold pressure.
摘要:
Systems and methods for controlling the output of a battery pack are disclosed. In one example, a battery pack contactor is opened in response to battery pack current. The system and method may reduce battery pack degradation and increase system flexibility.
摘要:
Systems and methods for controlling the output of a battery pack are disclosed. In one example, a battery pack contactor is closed after receiving a request to open the battery pack contactor during a power-up sequence. The system and method may reduce battery pack degradation.
摘要:
Systems and methods monitoring battery bus bars are disclosed. In one example, positive temperature coefficient thermistors are coupled to battery bus bars. The systems and method may reduce the cost and complexity of battery bus bar monitoring.
摘要:
Systems and methods for controlling a contactor of a battery pack are disclosed. In one embodiment, the coil of the contactor is controlled by a power supply. Further, the contactor coil holding current may be adjusted in response to vehicle drive mode.