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Dive into the research topics where Graf Hans-Michael is active.

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Featured researches published by Graf Hans-Michael.


Archive | 2004

Verfahren zur Steuerung der Energieverteilung in einem Verkehrsmittel und Verkehrsmittel, das dieses Verfahren umsetzt

Graf Hans-Michael


Archive | 2004

Energy supply for a motor vehicle has generator, battery and a dc to dc converter for optimal battery charging

Graf Hans-Michael


Archive | 2004

Ease of motor vehicle engine starting determination method in which the battery voltage, starter motor speed, oil temperature and battery loading prior to starting are used in a calculation step

Graf Hans-Michael


Archive | 2004

Error and fault monitoring method especially for motor vehicle electrical loads, involves measuring load voltage in one average resistance measurement by measuring shunt

Graf Hans-Michael


Archive | 2007

Device for determining the temperature of a vehicle battery having a pole connected with a clip to an electrical consumer comprises a temperature sensor coupled with the clip

Graf Hans-Michael; Hahn Alexander; Landes Harald


Archive | 2007

Lead battery`s e.g. starter battery, electrolyte fill level determining method for motor vehicle, involves using capacitive sensor principle for qualitative and quantitative determination of electrolyte fill level of lead battery

Bechtold Mario; Graf Hans-Michael; Hahn Alexander; Waidhas Manfred


Archive | 2008

Verfahren zur Bestimmung eines Betriebszustandes eines Energiespeichers

Graf Hans-Michael; Hahn Alexander


Archive | 2007

Determining state of battery in circuit with starter for combustion engine involves detecting parameter correlated with current change/level when starting, deriving measure of current flowing during starting, deriving state from measure

Graf Hans-Michael; Hahn Alexander; Waidhas Manfred


Archive | 2008

METHOD FOR DETERMINING AN OPERATING STATE OF AN ENERGY ACCUMULATOR

Graf Hans-Michael; Hahn Alexander


Archive | 2007

METHOD AND DEVICE FOR DETERMINING THE BATTERY STATE OF A BATTERY IN A CIRCUIT WITH A STARTER FOR AN INTERNAL COMBUSTION ENGINE

Graf Hans-Michael; Hahn Alexander; Kuehn Carola

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