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Tunable starter resistor

A technology of resistors and resistance values, applied in the field of adjustable starter resistors, which can solve the problems of low resistance, high inrush current, battery voltage drop, etc.

Inactive Publication Date: 2015-11-11
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low resistance of the starter motor and wires, the inrush current will be high, creating a significant drain on the battery
This drain can cause a significant drop in battery voltage

Method used

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  • Tunable starter resistor
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Examples

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Embodiment Construction

[0029] As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention which may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

[0030] An adjustable resistor for a starter assembly of a vehicle is disclosed herein. A resistor may be connected in series with the vehicle battery or starter motor to prevent current draw from the battery from exceeding a predetermined threshold during vehicle cranking. The composition of the resistor and the orientation of the sintered particles that make up that composition can a...

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Abstract

A passive two-terminal circuit element may include a resistor including a carbon-metal composite resistive element. The resistive element is configured to maintain a resistivity that fluctuates less than one tenth of an ohm per ten degree temperature change up to 400 degrees Celsius.

Description

technical field [0001] Disclosed herein is an adjustable starter resistor. Background technique [0002] Vehicles are typically started via a starter motor circuit. During vehicle starting, the starter motor may draw a large amount of current from the vehicle battery to crank the engine. Due to the low resistance of the starter motor and wires, the inrush current will be high, creating a significant drain on the battery. This drain can cause a significant drop in battery voltage. Due to this inrush condition, there may not be enough voltage left during vehicle cranking for other systems of the vehicle that also draw current from the battery. Contents of the invention [0003] A passive two-terminal circuit element may include a resistor comprising a carbon-metal composite resistive element configured to maintain a resistance value fluctuation of less than one-tenth of an ohm for every ten-degree change in temperature, up to 400 degrees Celsius. [0004] A starter circ...

Claims

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Application Information

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IPC IPC(8): F02N11/08
CPCF02N11/08F02N2011/0881H01C7/06H01C10/10H01C17/0652H01C17/06526H01C17/30F02N11/00F02N11/087F02N11/10F02N15/067
Inventor 拉维·奥鲁如刘翔英克里斯缇娜·勒肯尼斯·W·汉普顿查尔斯·德比斯
Owner FORD GLOBAL TECH LLC