KR-20260066970-A - BRAKING CONTROL METHOD AND BRAKING CONTROL SYSTEM USING ENGINE BRAKE

KR20260066970AKR 20260066970 AKR20260066970 AKR 20260066970AKR-20260066970-A

Abstract

A braking control method and system utilizing an engine brake are disclosed, and a braking control method utilizing an engine brake according to one embodiment of the present invention is characterized by comprising: a step of recognizing a front target of a vehicle; a step of determining whether the vehicle satisfies the speed at which automatic emergency braking (AEB) can be operated; a step of determining whether the gear ratio of the vehicle exceeds the lowest gear ratio when the speed at which AEB can be operated is satisfied; an AEB condition determination step of determining whether at least some of the primary warning occurrence conditions of AEB are satisfied when the gear ratio exceeds the lowest gear ratio; and a step of transmitting an engine brake operation command to operate the engine brake of the vehicle when the AEB condition determination step is satisfied.

Inventors

김정우

Assignees

주식회사 에이치엘클레무브

Dates

Publication Date: 20260512
Application Date: 20241105

Claims (10)

In a braking control method utilizing engine braking, Step of recognizing a target in front of the vehicle; A step of determining whether the above-mentioned vehicle satisfies the speed at which Automatic Emergency Braking (AEB) can be activated; A step of determining whether the gear ratio of the vehicle exceeds the lowest gear ratio when the above AEB operating speed is satisfied; An AEB condition determination step for determining whether at least some of the primary warning occurrence conditions of AEB are satisfied when the gear ratio exceeds the lowest gear ratio; and A step of transmitting an engine brake operation command to activate the engine brake of the vehicle when the above AEB condition determination step is satisfied. A braking control method utilizing an engine brake characterized by including
In Article 1, A braking control method utilizing an engine brake, characterized in that the step of transmitting the engine brake operation command is performed immediately before a warning according to AEB is given.
In Article 1 or Article 2, A braking control method utilizing an engine brake, characterized in that the step of transmitting the engine brake operation command is to operate the engine brake so that the gear ratio is lowered by two gears when the speed of the vehicle is within the range of 30 to 50 kph and the gear ratio of the vehicle is 3rd or 4th gear.
In Paragraph 3, A braking control method utilizing an engine brake, characterized in that the step of transmitting the engine brake operation command is to operate the engine brake so that the gear ratio is lowered by one gear when the speed of the vehicle is in a range other than 30 to 50 kph or when the gear ratio of the vehicle is not 3rd or 4th gear.
In Article 1 or Article 2, A braking control method utilizing an engine brake, characterized in that the aforementioned forward target is a vehicle, pedestrian, or bicycle in front, and the AEB operation speed varies depending on the type of the forward target.
In a braking control system utilizing engine braking, A first sensor unit for detecting the surroundings of the vehicle, including a front target; A second sensor unit for detecting body information of the above-mentioned vehicle; Engine brake that performs braking control by gear shifting; and A control unit for operating the engine brake based on detection information from the first sensor unit and the second sensor unit. Includes, A braking control system utilizing an engine brake, characterized in that the above-described control unit transmits an operation command to operate the engine brake when the above-described vehicle satisfies the speed at which automatic emergency braking (AEB) can be operated, the gear ratio of the above-described vehicle exceeds the lowest gear ratio, and at least some of the conditions for a primary warning of AEB are satisfied.
In Article 6, A braking control system utilizing an engine brake, characterized in that the above-described control unit transmits an engine brake operation command to operate the engine brake immediately before a warning according to AEB is issued.
In Article 6 or Article 7, The first sensor unit includes a front camera, a front radar, and at least one corner radar installed on the vehicle, and A braking control system utilizing an engine brake, characterized in that the second sensor unit includes a vehicle speed sensor, a vehicle acceleration sensor, and a vehicle gear sensor.
In Article 6 or Article 7, The above control unit is connected to a warning device for issuing a warning to the driver of the vehicle, and A braking control system utilizing an engine brake, characterized in that the above-described control unit controls the warning device to provide a visual or auditory warning to the driver regarding the AEB when all conditions for the first warning of the AEB are satisfied.
In Article 6 or Article 7, The above control unit is connected to a braking device for controlling the braking of the above vehicle and a steering device for controlling the lateral movement of the above vehicle, and A braking control system utilizing an engine brake, characterized in that the control unit controls the braking device to perform braking control according to AEB when it is determined that the forward target has entered within the AEB braking control timing.

Description

Braking Control Method and System Using Engine Brake The present invention relates to a braking control method and system utilizing an engine brake. More specifically, it relates to a braking control method and system utilizing an engine brake for improving the performance of an automatic emergency braking system. In vehicles, a Driver Assistance System provides support to the driver while driving inside the vehicle for the driver's convenience. For example, Autonomous Emergency Braking Systems (AEB), which automatically apply the brakes when there is a risk of collision to prevent rear-end collisions with the vehicle ahead, have been widely adopted. Meanwhile, there is a problem in that warnings from the Automatic Emergency Braking (AEB) system may be triggered frequently depending on the driver's driving habits, and braking by AEB operates sensitively even when the driver is aware of the vehicle ahead, potentially causing an unpleasant experience for the driver due to sudden braking. Therefore, there is a need for a braking control method and system that can suppress the occurrence of unnecessary warnings caused by the aforementioned problems of AEB and improve the driver's driving convenience. FIG. 1 is a control flowchart illustrating a braking control method utilizing an engine brake according to one embodiment of the present invention. FIG. 2 is a control flowchart specifically illustrating an embodiment of the step of transmitting an engine brake operation command in a braking control method utilizing an engine brake according to an embodiment of the present invention. FIGS. 3(a) and (b) are drawings for indicating the timing of intervention of the engine brake in a braking control method utilizing an engine brake according to one embodiment of the present invention. FIG. 4 is a drawing showing a camera and radar installed in a vehicle according to an embodiment of the present invention. FIG. 5 is a control configuration diagram schematically showing the configuration of a braking control system utilizing an engine brake according to an embodiment of the present invention. Embodiments of the present invention are described below with reference to the attached drawings to enable those skilled in the art to easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification are denoted by similar reference numerals. Throughout this specification, when a part is described as being "connected" to another part, this includes not only cases where they are "directly connected," but also cases where they are "electrically connected" or "indirectly connected" with other elements interposed between them. Throughout the entire specification, when a component is described as being located "on," "on top," "on top," "under," "on bottom," or "on bottom" of another component, this includes not only cases where the component is in contact with the other component but also cases where another component exists between the two components. Throughout this specification, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. The present invention relates to a braking control method and system utilizing an engine brake to improve driver driving convenience and AEB braking performance by intervening the engine brake immediately before AEB control. FIG. 1 is a control flowchart illustrating a braking control method utilizing an engine brake according to one embodiment of the present invention. Referring to FIG. 1 of the present invention, a braking control method (S100) utilizing an engine brake according to one embodiment of the present invention may include a step (S110) of recognizing a front target of a vehicle. For example, the front target may be recognized by a front camera mounted on the vehicle. In addition, the forward target may be a vehicle traveling in front of the vehicle, or it may be a pedestrian or bicycle located in front of the vehicle. Furthermore, it is not limited to these, and any target capable of activating the AEB function may be considered a forward target of the present invention. Next, a step (S120) of determining whether the AEB operating speed is satisfied may be performed. Here, the AEB operating speed may refer to the speed range of the vehicle corresponding to the conditions for the automatic emergency braking system (AEB) to operate. Meanwhile, the speed at which the vehicle's AEB can be activated may vary depending on the type of target in front. For example, if the target in front is a vehicle, the speed at which the AEB can be activated may be in the range of approximately 10 to 85