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Vehicle having variable oil pump

a hydraulic pump and variable technology, applied in the direction of positive displacement liquid engine, piston pump, gasket pump, etc., can solve the problems of increasing vehicle weight, deteriorating fuel consumption, increasing vehicle cost, etc., and achieving the effect of minimizing energy loss of hydraulic pump, fuel consumption, and fuel consumption

Inactive Publication Date: 2014-09-11
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a vehicle that has a variable hydraulic pump. This invention is aimed at minimizing energy lost by the hydraulic pump, reducing fuel consumption, and stabilizing hydraulic pressure by controlling the load of the hydraulic pump. The hydraulic pump's rotation speed is optimally controlled by a motor based on the engine's rotation speed and driving conditions, reducing energy loss. Also, fluctuations in hydraulic pressure formed by the hydraulic pump are minimized, improving stability. Compensation value is applied based on oil temperature to safely generate hydraulic pressure, and one motor is used to optimally control the load of the hydraulic pump.

Problems solved by technology

The vehicle having the automatic transmission and the ISG system has to have two pumps having equal functions, and therefore vehicle cost is increased, vehicle weight is also increased, and the fuel consumption is deteriorated.

Method used

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  • Vehicle having variable oil pump
  • Vehicle having variable oil pump
  • Vehicle having variable oil pump

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Embodiment Construction

[0025]Reference will now be made in detail to various embodiments of the present invention(s), examples of which are illustrated in the accompanying drawings and described below. While the invention(s) will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention(s) to those exemplary embodiments. On the contrary, the invention(s) is / are intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0026]FIG. 1 is a schematic cross-sectional view of a variable hydraulic pump that is disposed in a vehicle, and FIG. 2 is a schematic diagram of a variable hydraulic pump that is disposed in a vehicle according to various embodiments of the present invention. Referring to FIG. 1 and FIG. 2, a variable hydraulic pump of a vehicle incl...

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Abstract

A vehicle having a variable hydraulic pump may include a sun gear that receives a torque from a power source through an input shaft, a ring gear of which an interior circumference is with a distance from an exterior circumference of the sun gear, a planetary gear that is disposed between the interior circumference of the ring gear and the exterior circumference of the sun gear, a carrier that connects with an output shaft, a hydraulic pump that pumps oil through the output shaft that is connected to the carrier, and a motor that is disposed outside the ring gear to selectively rotate the ring gear.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application claims priority of Korean Patent Application Number 10-2013-0025571 filed Mar. 11, 2013, the entire contents of which application are incorporated herein for all purposes by this reference.BACKGROUND OF INVENTION[0002]1. Field of Invention[0003]The present invention relates to a vehicle having a variable hydraulic pump that variably changes load of hydraulic pump for generating hydraulic pressure that is necessary for an engine or a transmission to reduce energy loss and cost.[0004]2. Description of Related Art[0005]Recently, fuel consumption saving art has been researched to reduce CO2, and an ISG (Idle stop and go) system turns off engine in a predetermined stop condition and restarts the engine in a predetermine restart condition.[0006]The ISG (Idle Stop and Go) system uses information such as vehicle speed, engine rotation speed, coolant temperature, and so on to stop the engine in a predetermined condition and ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04C14/08F04C15/00
CPCF04C15/0061F04C14/08F04C2/102F04C15/008F04C2240/45F16H3/724F16H61/0028F01M1/02F04C2/00F16N13/20
Inventor HWANG, JIN YOUNG
Owner HYUNDAI MOTOR CO LTD