About 327 results
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https://drivepatents.com/patents/999713 · 8 Aug 2012
This invention serves to suppress the deterioration of oil tightness of a valve after welding without any change in the direction of fuel injection even with deformation of a convex portion after welding of an injection opening plate to a valve seat, as we...
https://drivepatents.com/patents/1000706 · 4 Jul 2012
Problem to be solved: To provide an electric power conversion device that normally operates, even when the voltage of a DC power supply or the like changes, by suppressing electric oscillations in an LC filter circuit so as to suppress transient oscillatio...
https://drivepatents.com/patents/1000698 · 4 Jul 2012
The present invention provides an automotive electric power supply system that suppresses deterioration in service life of a first electricity storage apparatus and enables electric power that is generated by an alternator to be changed significantly so as...
https://drivepatents.com/patents/1001059 · 27 Jun 2012
An electric power converter of an electric rolling stock includes: a converter unit (10) (a first electric-power converting unit) that receives a direct-current voltage and outputs a direct-current voltage controlled to a predetermined value; and an invert...
https://drivepatents.com/patents/1001018 · 27 Jun 2012
A power converting apparatus for electric motor vehicle propulsion is provided that is suitable for a use in which power regeneration from an inverter unit 30 to a power storing unit 50 or power supply from the power storing unit 50 to the inverter unit 30...
https://drivepatents.com/patents/1001588 · 13 Jun 2012
A power conversion apparatus is disclosed in which AC sides of plural single-phase inverters (IB-INV, 2B-INV, 3B-INV, 2Ba-INV) that convert DC power of DC power sources (V 1B , V 2B , V 3B , V 2Ba ) to AC power are connected in series, and in which gradati...
https://drivepatents.com/patents/1001788 · 6 Jun 2012
Both ends of a direct-current power source 1 are connected with capacitors C1, C2 which are connected in series. The interconnection point of the capacitors C1, C2 is connected with one end of an electric power system 2 and one end of a reactor L. Both end...
https://drivepatents.com/patents/1001969 · 30 May 2012
The present invention provides an automotive electric power supply system that can prevent deterioration in electric power supply capacity due to discharging of a main electric power source, that can prevent large currents flowing from the main electric po...
https://drivepatents.com/patents/1002177 · 23 May 2012
A propulsion control apparatus for an electric motor car includes: an inverter apparatus connected to a DC power supply; a motor connected to an output of the inverter apparatus; a converter apparatus connected to an input of the inverter apparatus; and a ...
https://drivepatents.com/patents/1002458 · 16 May 2012
A power converter is installed in a casing 20 attached beneath the floor of an electric vehicle. The power converter includes a capacitor unit 6 and a power semiconductor module 5 housed in a hermetically sealed part 1 of the casing 20 closed by a cover 21...