Patent application number | Description | Published |
20080208494 | Method and Device for Determining the Charge and/or Aging State of an Energy Store - In a method and a device for determining a charge/aging state of an energy store, the charge/aging state is able to be determined by a control unit on the basis of an open terminal voltage of the energy store, able to be measured with the aid of a voltage-measuring sensor, in a load-free state. It is provided that the control unit initiates a measurement of a first open terminal voltage at a first instant following the occurrence of the load-free state of the energy store and, based on the measured first open terminal voltage, the control unit, with the aid of a prediction model, specifies a future instant for at least one additional measurement of the open terminal voltage, and at least one additional open terminal voltage is measured at the future instant, and the charge/aging state of the energy store is determined with the aid of the at least one additional open terminal voltage. | 08-28-2008 |
20080209886 | Method for Controlling an Operation of a Heatable Exhaust-Gas Sensor of a Motor Vehicle - A method is for controlling the operation of an exhaust-gas sensor disposed in an exhaust duct of a motor vehicle and equipped with an internal or external sensor heating device, the motor vehicle including a combustion engine and an automatic switchoff, which causes an automatic switching off of the combustion engine when at least one stop condition is present. It is provided that: (a) following an automatic switching off of the combustion engine by the automatic switchoff, a first future instant is determined at which the exhaust-gas temperature in the exhaust duct will drop below a condensation temperature below which condensate precipitation from the exhaust gas may occur; (b) a second instant is determined at which a heat output of the sensor heating device must be interrupted or reduced so that a sensor temperature of the exhaust-gas sensor will have dropped to a maximally allowed sensor temperature no later than the first future instant; and the heat output of the sensor heating device is interrupted or reduced when the second instant is attained. | 09-04-2008 |
20080227589 | Method for Controlling an Overrun Condition of a Hybrid Vehicle and Hybrid Vehicle - A method is for controlling an overrun condition in a hybrid vehicle having a combustion engine and additionally at least one electric motor as well as an overrun fuel cutoff, which interrupts a fuel supply to the combustion engine when the vehicle is in an overrun condition and restores the fuel supply when the combustion engine reaches or falls below a restoring speed. At least in a combustion engine at operating temperature, the fuel supply is restored at a restoring speed of at most 200 min | 09-18-2008 |
20090146615 | Hybrid Motor Vehicle and Method for Controlling Operation of a Hybrid Motor Vehicle - The invention relates to a method for controlling an operation of a motor vehicle equipped with a hybrid drive unit ( | 06-11-2009 |
20100108009 | Method and Device for the Optimized Starting of an Internal Combustion Engine - A method and a device are for the optimized starting of an internal combustion engine using a starter, which is connected to a capacitor store, the capacitor store being connected via a DC/DC converter to a vehicle electrical system of a vehicle, and the vehicle electrical system including an energy store for supplying electrical energy having a nominal voltage, and the starter consuming a starting energy for starting the internal combustion engine, which is a function of a temperature of the internal combustion engine, the temperature of the internal combustion engine being measured by at least one temperature sensor and the capacitor store being charged to a setpoint voltage with the aid of a battery via another DC/DC converter, which connects the battery in parallel to the capacitor store parallel to a switch, the setpoint voltage being set by a control unit such that the electrical energy stored in the capacitor store charged to the setpoint voltage is greater than the starting energy ascertained on the basis of the measured temperature. | 05-06-2010 |
20100131177 | METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE - A method for operating an internal combustion engine in the form of an Otto engine, especially of a motor vehicle, selectively uses carburetor fuel, especially gasoline or ethanol (E85) by direct injection into at least one combustion chamber of the internal combustion engine by means of at least one fuel injector. Optionally, instead of injecting ignition spark engine fuel or in addition to injecting ignition spark engine fuel, the internal combustion engine is operated with gas, especially CNG (Compressed Natural Gas) or LPG (Liquefied Petroleum Gas). A mixture adaptation value is continuously determined during the operation of the internal combustion engine with spark ignition engine fuel. An actual mixture adaptation value is stored in a memory during the operation of the internal combustion engine with the spark ignition engine fuel and, after a predetermined minimum duration of operation with gas, an actual mixture adaptation value is compared with the stored mixture adaptation value during the operation of the internal combustion engine with ignition spark engine fuel. The fuel injectors are scavenged when a difference between the actual mixture adaptation value and the stored mixture adaptation value exceeds a predetermined difference value. | 05-27-2010 |
20100131178 | METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE - A method relates to operating an internal combustion engine in the form of an Otto engine, especially of a motor vehicle. Otto engine fuel (i.e., carburetor fuel, spark ignition engine fuel), such as gasoline or ethanol (E85), are directly injected into at least one combustion chamber of the internal combustion engine with at least one fuel injector. Optionally, instead of injecting ignition spark engine fuel or in addition, the internal combustion engine is operated with gas, especially CNG (compressed natural gas) or LPG (liquefied petroleum gas). During operation of the internal combustion engine with gas only, the engine is automatically switched to the operation with spark ignition engine fuel for a predetermined period, or the engine is switched to the operation with spark ignition engine fuel in addition to the operation with gas, in such a manner that a predetermined quantity of the carburetor fuel flows through the at least one fuel injector. The engine is then automatically switched back to the operation with gas only. | 05-27-2010 |
20110167796 | EXHAUST GAS AFTER-TREATMENT HAVING REDUCED RHODIUM DEPLETION - In a method for the after-treating of an exhaust gas from a preferably direct-injection and/or spark-ignition internal combustion engine, the exhaust gas is fed through a catalytic converter system connected downstream of the internal combustion engine. The system has at least one catalyst with a noble metal depletion having at least the elements palladium and rhodium which are present in a weight ratio of >5:1, 6:1, 7:1, 8:1, 9:1, 10:1, 11:1, or 12:1. In the new European driving cycle, the catalyst exceeds a temperature T | 07-14-2011 |
20140130495 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE HAVING HIGH PRESSURE AND LOW PRESSURE EXHAUST GAS RECIRCULATION - The invention relates to a method for operating an internal combustion engine, a turbine of an exhaust gas turbocharger situated in an exhaust system of the internal combustion engine being driven by exhaust gas from the internal combustion engine, and a compressor of the exhaust gas turbocharger powered by the turbine and situated in a combustion air system of the internal combustion engine compressing combustion air, exhaust gas being diverted in a high pressure exhaust gas recirculation loop upstream from the turbine and mixed with the combustion air downstream from the compressor, exhaust gas being diverted in a low pressure exhaust gas recirculation loop downstream from the turbine and mixed with the combustion air upstream from the compressor, exhaust gas being purified by a low pressure exhaust gas recirculation filter in the LP-EGR loop, a predetermined value for a total exhaust gas recirculation flow. | 05-15-2014 |