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drive unit for vehicle

A driving device and vehicle technology, applied in transmission parts, transmission control, transmission box, etc., can solve problems such as difficult configuration of electric oil pumps

Active Publication Date: 2011-12-21
AISIN AW CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Usually, it is difficult to arrange such an electric oil pump inside the vehicle drive unit, so it is often installed in such a way that it is connected to the outside of the vehicle drive unit case.

Method used

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Examples

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Embodiment Construction

[0026] Embodiments of the present invention will be described based on the drawings. figure 1 It is a partial cross-sectional view showing a main part of the vehicle drive device 1 . figure 2 It is a schematic diagram of the vehicle drive device 1 . figure 1 A case 3 housing a torque converter, a speed change mechanism, etc. is shown, and the outer shape of an engine 11 connected to the case 3 is indicated by a two-dot dash line. The box body 3 has a box main body portion 20 and a connection box portion 30 . The torque converter is accommodated inside the connection box portion 30 , and an electric oil pump (hereinafter simply referred to as “electric pump”) 70 is attached to the outside of the connection box portion 30 . The case main body part 20 in which the transmission mechanism 14 operated by hydraulic pressure is housed in the figure 1 It is only indicated by outline outline.

[0027] In this vehicle drive device 1, the engine 11 is connected and fixed to the front...

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PUM

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Abstract

A drive device for a vehicle is provided with an oil supply duct formed on a case body part that houses a variable-speed mechanism; a case connecting part (30) that connects an engine to the case body part; a mechanical oil pump (80) disposed on the connection area between the case body part and the case connecting part (30) and which has an oil discharge duct and an oil intake duct (35) connected to the oil supply duct; an electric oil pump (70) which can provide pressurized oil to the oil supply duct in parallel with the mechanical oil pump (80); and a connecting oil duct (93) provided on the case connecting part (30) for connecting an oil discharge duct and an oil intake duct (73) of the electric oil pump (70) to the oil supply duct.

Description

technical field [0001] The present invention relates to a vehicle drive device having a transmission mechanism operated by hydraulic pressure and connected to an engine for use, and the vehicle drive device having a power supply for supplying the transmission mechanism to the vehicle. Hydraulic electric oil pump. Background technique [0002] In recent years, there has been an increasing number of vehicles equipped with an idling stop function for stopping the engine when the vehicle stops in order to reduce fuel consumption and reduce exhaust gas. Also, in a hybrid vehicle using an engine and a rotary electric machine as a driving force source, there is generally a function of stopping the engine when the vehicle stops or decelerates. However, in a vehicle having a transmission mechanism actuated by hydraulic pressure, since the engine is stopped, the mechanical pump driven by the engine is also stopped. Therefore, hydraulic pressure cannot be supplied to the transmission...

Claims

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Application Information

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IPC IPC(8): F16H57/02F16H57/023F16H57/025F16H57/04
CPCF16H61/0025F16H2061/0037F16H61/0031F16H57/0441F16H2057/02013F16H2057/02043F16H57/02F16H57/0446F16H2057/02047Y10T74/2186
Inventor 小沟恭辅常松功大野薰大久保宽俊
Owner AISIN AW CO LTD