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Oil pump driving control device for a hybrid vehicle

A hybrid vehicle, oil pump technology, applied in hybrid vehicles, power units, control devices, etc., to achieve the effects of light weight, reduction in number, and simplification of hydraulic circuits

Inactive Publication Date: 2006-12-13
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Requires oil pressure circuit to control existing and auxiliary pumps

Method used

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  • Oil pump driving control device for a hybrid vehicle
  • Oil pump driving control device for a hybrid vehicle
  • Oil pump driving control device for a hybrid vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0062] Example 2. Embodiment 2 is an example in which the rotation of the motor-generator is maintained at a high level when starting off by slipping the second clutch through the motor-generator. Because the system is formed with figure 1 Same, so drawing and description are omitted. Figure 4 is a flowchart showing the flow of an example oil pump drive control process executed by the integrated controller of Embodiment 2. In addition, a description of the processing of each of steps S201 to S209 is omitted because they are related to figure 2 The processing of each step from step S101 to step S109 in the flowchart shown in is the same.

[0063] In step S212, which is a continuation of the accelerator "on" determination of step S204, it is determined whether the accelerator opening is greater than 2 / 8 (threshold value considering that the accelerator pedal is depressed greatly), and, if "yes", proceed Go to step S214, and if "No", go to step S213. In step S213 which is ...

Embodiment 3

[0076] Example 3. Embodiment 3 is an example of the operation of the mechanical oil pump by detecting the hydraulic pressure generated by the pump when the hydraulic pressure is reduced by deceleration or stop. The system structure is the same as that of Embodiment 1, so drawing and description are omitted.

[0077] Figure 6 is a flowchart showing the flow of an example oil pump drive control process executed by the integrated controller of Embodiment 3. The processing of each step from step S301 to step S311 is the same as the processing of each step from step S101 to step S111 , and thus description thereof will be omitted. In step S312, continue the determination of selection R and D in step S302, determine whether the accelerator and foot are disengaged, if "Yes", then proceed to step S303, and if "No", then proceed to step S310.

[0078] In step S313, continuing the determination of the brake being "on" in step S303, it is determined whether the speed of the vehicle i...

Embodiment 4

[0090] Example 4. Embodiment 4 is an example in which the stop of the mechanical oil pump operation is controlled by a timer using a detection signal of the running condition of the vehicle as a trigger. The detection signal is provided by a detection component (detector) which detects the driving condition of the vehicle. Because the system structure is the same as that of Embodiment 1 figure 1 Same, so, omit drawing and description.

[0091] Figure 8 is a flowchart showing the flow of an example oil pump drive control process executed by the integrated controller of Embodiment 4. In addition, the description of the processing of each step from step S410 to step S405 and step S407 to step S411 is omitted because the processing is similar to figure 2 The processing of steps S101 to S105 and steps S107 to S111 shown in . In step S412 continuing based on the brake ON determination of step S403, it is determined whether the vehicle is stopped, and if yes, proceed to step S...

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PUM

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Abstract

In general, an oil pump driving control device for a hybrid vehicle is described. A hybrid vehicle includes a drive-train configured and arranged to transmit power in the order of an engine, a first clutch, a motor generator, a second clutch and a drive wheel, and an oil pump operably configured and arranged at a location between the first clutch and the second clutch such that the oil pump is mechanically driven by at least one of the engine and the motor generator. The invention provides an oil pump driving control device that supplies the necessary oil pressure for an automatic transmission with only a single mechanical oil pump. For example, even when it is not possible to maintain tightening of the second clutch, oil pressure may be supplied by rotating the oil pump using the motor generator. In this way, the oil pressure may be supplied with a single oil pump.

Description

[0001] This application claims the benefit of Japanese Patent Application No. 2005-166261 filed on June 6, 2005, and Japanese Patent Application No. 2006-047628 filed on February 24, 2006, both of which are incorporated by reference The entire content is incorporated here. technical field [0002] The present invention relates to an oil pump drive control device for a hybrid vehicle. Background technique [0003] In a hybrid vehicle having an automatic transmission (hereinafter referred to as "AT") combined with an electric motor, an oil pump for supplying oil pressure to the AT stops pumping oil during stop and idle of the hybrid vehicle. As a result, the oil pressure required to control the AT cannot be generated. To solve this problem, a hybrid vehicle is equipped with an auxiliary oil pump, and an auxiliary electric motor that drives the auxiliary oil pump. Therefore, the oil pressure for controlling the AT can be generated not only when the vehicle is running but also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60K6/387B60K6/40B60K6/48B60K6/547B60K17/04B60L50/16B60W10/02B60W10/08B60W10/30F16D48/02
CPCF16H61/0028B60W10/30B60W2710/025B60W10/02B60K6/48B60W10/11B60W30/18063B60W10/08Y02T10/6221B60W20/00B60L1/003B60L15/2054B60L2240/12B60L2240/14B60L2240/421B60L2240/423B60L2240/441B60L2240/443B60L2240/507B60L2260/26Y02T10/72B60L50/16Y02T10/62Y02T10/64Y02T10/7072B60W10/04B60W20/40Y02T10/70
Inventor 日高辉胜小野山泰一早崎康市
Owner NISSAN MOTOR CO LTD
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