Method and arrangement for improving performance of electrical system of vehicle

A technology for electrical systems and vehicles, applied in the direction of motor starting for engines, starting of engines, engine components, etc., can solve the problems of increased start/stop events, increased current consumption, and high timing requirements

Active Publication Date: 2012-12-26
VOLVO CAR CORP
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Problems solved by technology

[0007] However, such known devices suffer from some significant limitations in the context of increased s

Method used

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  • Method and arrangement for improving performance of electrical system of vehicle
  • Method and arrangement for improving performance of electrical system of vehicle

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Embodiment Construction

[0021] In general, such as figure 2 Illustratively, the embodiments herein relate to an apparatus for improving the performance of the electrical system of a vehicle having an internal combustion engine provided with a start / stop system.

[0022] figure 1 A schematic circuit diagram of the electrical system of a vehicle having an internal combustion engine provided with a start / stop system in the related art is shown. The electrical system includes a primary battery V1, which is selectively connected to a starter motor S of the internal combustion engine through a starter solenoid valve SS. The secondary battery V2, the alternator A, and the other vehicle electrical load Z are arranged in parallel with each other, and can be selectively connected in parallel with the primary battery V1 through the charging switch S1. The diode D1 can be arranged in parallel with the charging switch S1, with its anode connected to the primary battery V1 side and its cathode connected to the alte...

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Abstract

Embodiments herein relate to an arrangement (1) and a method for improving the performance of an electrical system of a vehicle having an internal combustion engine provided with a start/stop system. The electrical system further comprises a primary battery (V1) which is selectively connectible to a starter motor (S) for the internal combustion engine via a starter solenoid (SS). A secondary battery (V2), an alternator (A) and additional vehicle electrical loads (Z) arranged in parallel with each other and selectively connectible in parallel with the primary battery (V1) via a charge switch (S1). In parallel with the secondary battery is further arranged a DC/DC converter (DC/DC) in series with a third source of electrical energy (V3).

Description

Technical field [0001] The embodiments herein relate to devices for improving the performance of a vehicle electrical system. Specifically, they relate to devices for improving the performance of the electrical system of a vehicle having an internal combustion engine provided with a start / stop system. [0002] The embodiments herein also relate to methods for improving the performance of a vehicle electrical system. Specifically, they relate to methods of improving the performance of the electrical system of a vehicle having an internal combustion engine provided with a start / stop system. Background technique [0003] So-called start / stop systems are becoming more and more common in vehicles with internal combustion engines. These systems have proven capabilities to provide fuel savings, especially in urban driving. This is because the internal combustion engine is cut off when it is not necessary to drive the vehicle and restarted when needed again. [0004] However, one of the ...

Claims

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Application Information

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IPC IPC(8): F02N11/08
CPCF02N2011/0888F02N11/0866F02N2011/0885F02N2250/02
Inventor 厄尔扬・斯普尤特托尔比约恩・拉松丹尼尔・米德霍姆弗雷德里克・乌尔姆哈格
Owner VOLVO CAR CORP
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