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Vehicle cruise control apparatus

A cruise control and vehicle technology, applied to control devices, vehicle accessories, vehicle components, etc., can solve the problems of complicated driving operation of the driver and the inability to fully maintain the target vehicle speed

Inactive Publication Date: 2008-08-06
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, since the shift control is not properly performed during the cruise control, so that the target vehicle speed cannot be maintained sufficiently, a situation occurs that requires the driver's operation
As a result, the driver's driving operation will be complicated

Method used

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  • Vehicle cruise control apparatus
  • Vehicle cruise control apparatus
  • Vehicle cruise control apparatus

Examples

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no. 1 example

[0019] 1 is a block diagram showing a gasoline engine (hereinafter referred to as an engine) 2, an automatic transmission 4, and electronic control units (ECUs) 6 and 8 for the engine 2 and the automatic transmission 4, respectively. The engine 2 is installed in the vehicle as a vehicle engine. Additionally, a diesel engine or other type of engine may be used instead of the gasoline engine.

[0020] In the first embodiment, the engine 2 is provided with a plurality of cylinders, for example, 4 cylinders. The intake port of each cylinder is provided with its own fuel injection valve. In each cylinder, the fuel corresponding to the injection amount required by the engine 2 is injected from the fuel injection valve. In addition, the engine 2 is provided with various types of sensors 10 such as an intake air amount sensor, an accelerator pedal position sensor, a throttle opening sensor, an engine speed sensor, a cylinder discrimination sensor, a coolant temperature sensor, and a...

no. 2 example

[0070] Fig. 5 is a block diagram showing a vehicle cruise control device according to a second embodiment. The cruise control demand value calculation section 14 and the AI ​​shift control section 20 in the first embodiment are replaced by a new cruise control demand value calculation section 114 and a navigation AI shift control section 120, respectively. Other structures are the same as those in the first embodiment. The same symbols denote the same components.

[0071]The vehicle is equipped with a navigation system. The navigation AI shift control unit 120 receives the road ahead information of the vehicle through the map information of the navigation system. Then, the navigation AI speed change control unit 120 sets a recommended vehicle speed for a road on which the vehicle will travel. Based on this recommended vehicle speed, the navigation AI shift control unit 120 limits the target vehicle speed Vct to the cruise control demand value calculation unit 114 . For exa...

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Abstract

A vehicle cruise control apparatus is provided. The vehicle has an engine 2 mounted thereon, a function of implementing constant-speed-cruise control and transmission control. The apparatus includes demand value computation section 14, engine control section 16, expected value computation section 12, compensation section 18 and AI-shift control section 20. The section 14 computes a demand value required for realizing a target speed. The section 16 adjusts an output of the engine 2 based on the demand value. The section 12 computes an expectation value based on the vehicle driving state and the driver's driving operation state. Based on a vehicle operating state including a comparison result of the demand value and the expectation value, the section 18 selects one of the demand value and the expectation value, and changes gears based on the selected value. As a result, driver's driving operation is prevented from becoming complicated during constant-speed-cruise control.

Description

technical field [0001] The present invention relates to a cruise control device for a vehicle having a function of performing cruise control for cruising the vehicle at a target vehicle speed, and performing selection based on the driving state of the vehicle and the driving operation state of the driver. The function of the shift control of the appropriate shift gear. Background technique [0002] By adjusting the output of a vehicle engine such as an internal combustion engine by a cruise control device, constant speed cruise control, so-called cruise control, is performed on the vehicle so that it can cruise at a target vehicle speed even while the driver keeps the accelerator pedal off (e.g. , Japanese Laid-Open Patent Publication No. 11-257477). [0003] In the technique according to Japanese Laid-Open Patent Publication No. 11-257477, engine braking control and throttle opening degree control for cruise control are performed based on the output of the engine while con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/14B60K31/00B60W10/04B60W10/06B60W10/10B60W10/11B60W10/115B60W30/00B60W30/19F02D29/00F02D29/02F16H59/14F16H59/44F16H59/66F16H61/02F16H61/68F16H61/684F16H61/686
CPCB60W2540/10B60W2520/10B60W2550/141B60W10/06B60W10/11B60W2720/10B60W2552/05B60W30/14
Inventor 甲斐川正人
Owner TOYOTA JIDOSHA KK
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