CN114802147A - Vacuum boosting brake system - Google Patents
Vacuum boosting brake system Download PDFInfo
- Publication number
- CN114802147A CN114802147A CN202210304858.1A CN202210304858A CN114802147A CN 114802147 A CN114802147 A CN 114802147A CN 202210304858 A CN202210304858 A CN 202210304858A CN 114802147 A CN114802147 A CN 114802147A
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- module
- vacuum
- power supply
- detection module
- power
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- 238000001514 detection method Methods 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims 1
- 238000003745 diagnosis Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002618 waking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/40—Failsafe aspects of brake control systems
- B60T2270/406—Test-mode; Self-diagnosis
Abstract
The invention discloses a vacuum boosting brake system, which comprises: the left side of the vehicle control unit is connected with a power control module for circuit control of the vehicle control unit, the upper side and the lower side of the vehicle control unit are both connected with a fault detection module and a data acquisition module, and the fault detection module comprises a vacuum pipeline detection module, a vacuum pump power supply detection module, a vacuum power-assisted system detection module and a pipeline air tightness detection module. The vehicle control unit is provided with a power supply control module, the power supply control module comprises a switch module, the switch module is connected with a first power supply, the first power supply is used for supplying power to the power supply control module, the switch module provides an enabling signal for the power supply control module and is used for awakening the power supply control module, and the vehicle control unit also comprises a fault detection module, a data acquisition module, a control signal output module and a vacuum pump signal acquisition module.
Description
Technical Field
The invention relates to the technical field of vacuum power-assisted braking systems, in particular to a vacuum power-assisted braking system.
Background
The gasoline engine can generate higher vacuum pressure at an air inlet manifold, and a vacuum pump is required to be installed on a diesel engine and a gasoline direct injection engine to provide a vacuum source, so that the requirements of a vacuum power-assisted braking system are met. Vacuum-assisted brake systems, as brake systems for passenger and light commercial vehicles, mainly use hydraulic pressure as a transmission medium, and require a booster system to assist the driver in braking, compared to pneumatic brake systems that can provide a power source. The vacuum brake booster system is also called as a vacuum servo brake system, and the servo brake system is a brake system which is additionally provided with a booster device providing braking force by other energy sources on the basis of manual hydraulic braking, so that the manual force and the power can be used simultaneously, namely the manual force and the engine power are used as braking energy sources. Under normal conditions, the output working pressure is mainly generated by a power servo system, so that when the power servo system fails, the hydraulic system can be driven by manpower to generate braking force to a certain degree.
The existing vacuum power-assisted brake system is simply controlled according to the on-off of a vacuum pressure switch, has no diagnosis function and has potential safety hazards in many aspects. Therefore, a new technical solution needs to be provided.
Disclosure of Invention
The invention aims to provide a vacuum power-assisted braking system, which solves the problems that the existing vacuum power-assisted braking system is simply controlled according to the on-off of a vacuum pressure switch, has no diagnosis function and has potential safety hazards in many aspects.
In order to achieve the purpose, the invention provides the following technical scheme: a vacuum-assisted braking system comprising: the left side of the vehicle control unit is connected with a power control module for circuit control of the vehicle control unit, the upper side and the lower side of the vehicle control unit are both connected with a fault detection module and a data acquisition module, the fault detection module comprises a vacuum pipeline detection module, a vacuum pump power supply detection module, a vacuum power-assisted system detection module and a pipeline air tightness detection module, and the right side of the vehicle control unit is respectively connected with a control signal output module and a vacuum pump signal acquisition module.
In a preferred embodiment of the present invention, a logic control circuit and a driving circuit are connected to a side surface of the control signal output module, a second power supply and a detection resistor are connected to a side surface of the logic control circuit and a side surface of the driving circuit, and the detection resistor is connected to a vacuum pump.
As a preferred embodiment of the present invention, a switch module is connected to a side surface of the power control module, and a first power supply is connected to a side surface of the switch module.
As a preferred embodiment of the present invention, a sensor module is connected to a side surface of the data acquisition module, and a vacuum pressure sensor and a pressure signal acquisition module are connected to a side surface of the sensor module.
As a preferred embodiment of the present invention, an alarm module is connected to a lower portion of the fault detection module and includes a fault lamp and a buzzer.
As a preferred embodiment of the present invention, the logic control circuit is connected to the processor and the power control module, respectively, and the driving circuit is connected between the logic control circuit and the vacuum pump.
Compared with the prior art, the invention has the following beneficial effects:
the invention is characterized in that a power supply control module is arranged in a vehicle controller, the power supply control module comprises a switch module, the switch module is connected with a first power supply, the first power supply is used for supplying power to the power supply control module, the switch module provides an enabling signal for the power supply control module and is used for waking up the power supply control module, the vehicle controller also comprises a fault detection module, a data acquisition module, a control signal output module and a vacuum pump signal acquisition module, wherein the fault detection module comprises a vacuum pipeline detection module, a vacuum pump power supply detection module, a vacuum boosting system detection module and a pipeline airtightness detection module, the vacuum pump power supply detection module detects whether a front end power supply is disconnected or not when the vehicle is powered on, if the front end power supply is disconnected, the vehicle controller sends a system fault signal to light a warning lamp and a buzzer for warning, and under the condition that the vehicle is powered on, the pipeline air tightness detection module detects whether a vacuum pipeline is equal to atmospheric pressure or not, judges whether a vacuum pipeline interface is disconnected or not, sends a signal to light an instrument warning lamp and a buzzer for warning if the vehicle control unit reports a system fault, sends a vacuum pump enabling signal when a brake pedal is lifted, and detects whether the vacuum pump is pumped to a preset vacuum degree value or not by the vacuum power-assisted system detection module, and if the vacuum pump is smaller than the preset vacuum degree value, the system is normal; if the time is larger than the preset time value, the system is in fault, a signal is sent to the instrument to light an instrument warning lamp and a buzzer, and if the brake pedal is stepped on during the detection period, the diagnosis is carried out again.
Drawings
FIG. 1 is a schematic overall flow diagram of the present invention;
FIG. 2 is a schematic flow diagram of a power control module according to the present invention;
FIG. 3 is a schematic flow chart of a control signal output module according to the present invention;
FIG. 4 is a schematic view of a data acquisition module according to the present invention;
FIG. 5 is a schematic flow chart of a fault detection module according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a vacuum-assisted braking system comprising: the left side of the vehicle control unit is connected with a power control module for circuit control of the vehicle control unit, the upper side and the lower side of the vehicle control unit are connected with a fault detection module and a data acquisition module respectively, the fault detection module comprises a vacuum pipeline detection module, a vacuum pump power supply detection module, a vacuum power assisting system detection module and a pipeline air tightness detection module, the right side of the vehicle control unit is connected with a control signal output module and a vacuum pump signal acquisition module respectively, the vehicle control unit is provided with the power control module, the power control module comprises a switch module, the switch module is connected with a first power supply source, the first power supply source is used for supplying power to the power control module, the switch module provides an enabling signal for the power control module and is used for awakening the power control module, the vehicle control unit further comprises the fault detection module, the power assisting system detection module and the data acquisition module, The system comprises a data acquisition module, a control signal output module and a vacuum pump signal acquisition module, wherein the fault detection module comprises a vacuum pipeline detection module, a vacuum pump power supply detection module, a vacuum boosting system detection module and a pipeline air tightness detection module, under the condition that the whole vehicle is powered on, the vacuum pump power supply detection module detects whether a front end power supply is disconnected, if the front end power supply is disconnected, the whole vehicle controller sends a system fault signal and lights a warning lamp and a buzzer to give an alarm, under the condition that the whole vehicle is powered on, the pipeline air tightness detection module detects whether the vacuum pipeline is equal to atmospheric pressure, judges whether a vacuum pipeline interface is disconnected, if the whole vehicle controller reports the system fault, a signal is sent to light the instrument warning lamp and the buzzer to give an alarm, when a brake pedal is lifted, a vacuum pump enable signal is sent, and the vacuum boosting system detection module detects whether the vacuum pump is pumped to the time of a preset vacuum degree, if the time is less than the preset time value, the system is normal; if the time is larger than the preset time value, the system is in fault, a signal is sent to the instrument to light an instrument warning lamp and a buzzer, and if the brake pedal is stepped on during the detection period, the diagnosis is carried out again.
Further improved, as shown in fig. 3: the side surfaces of the control signal output module are connected with a logic control circuit and a drive circuit, the side surfaces of the logic control circuit and the drive circuit are connected with a second power supply and a detection resistor, the detection resistor is connected with a vacuum pump, the logic control circuit is respectively connected with the processor and the power control module, the drive circuit is connected between the logic control circuit and the vacuum pump, when the power control module fails, the power control module outputs a low level signal to the logic control circuit, and the logic control circuit outputs a high level signal to the drive circuit according to the low level signal output by the power control module, so that the drive circuit controls the vacuum pump to be started; otherwise, the power control module outputs a high level signal to the logic control circuit, the logic control circuit outputs a high level signal to the drive circuit according to the high level signal output by the power control module when the processor outputs the high level signal, and the drive circuit controls the vacuum pump to be started, or the logic control circuit outputs a low level signal to the drive circuit when the processor outputs the low level signal, so that the drive circuit controls the vacuum pump to be stopped.
Further improved, as shown in fig. 3: the side that power control module's side is connected with switch module and switch module is connected with first power supply, and first power is used for providing the enabling signal for power control module, switch module for awaken up power control module.
Further improved, as shown in fig. 4: the side surface of the data acquisition module is connected with a sensor module, the side surface of the sensor module is connected with a vacuum pressure sensor and a pressure signal acquisition module, a pressure sensing signal of the vacuum pressure sensor is acquired through the pressure signal acquisition module, a vacuum pressure value of the vacuum power-assisted braking system is determined according to the pressure sensing signal, and the vacuum pump is controlled to be started or stopped through the control signal output module according to the vacuum pressure value; and acquiring a working state signal of the vacuum pump through the vacuum pump signal acquisition module, and controlling the vacuum pump to stop through the control signal output module when determining that the working state of the corresponding vacuum pump is in a fault state according to the working state signal.
Further improved, as shown in fig. 5: the lower part of the fault detection module is connected with an alarm module, the alarm module comprises a fault lamp and a buzzer, and the alarm module is connected with an instrument to visually know the working condition.
The invention is characterized in that a power supply control module is arranged in a vehicle controller, the power supply control module comprises a switch module, the switch module is connected with a first power supply, the first power supply is used for supplying power to the power supply control module, the switch module provides an enabling signal for the power supply control module and is used for waking up the power supply control module, the vehicle controller also comprises a fault detection module, a data acquisition module, a control signal output module and a vacuum pump signal acquisition module, wherein the fault detection module comprises a vacuum pipeline detection module, a vacuum pump power supply detection module, a vacuum boosting system detection module and a pipeline airtightness detection module, the vacuum pump power supply detection module detects whether a front end power supply is disconnected or not when the vehicle is powered on, if the front end power supply is disconnected, the vehicle controller sends a system fault signal to light a warning lamp and a buzzer for warning, and under the condition that the vehicle is powered on, the pipeline air tightness detection module detects whether a vacuum pipeline is equal to atmospheric pressure or not, judges whether a vacuum pipeline interface is disconnected or not, sends a signal to light an instrument warning lamp and a buzzer for warning if the vehicle control unit reports a system fault, sends a vacuum pump enabling signal when a brake pedal is lifted, and detects whether the vacuum pump is pumped to a preset vacuum degree value or not by the vacuum power-assisted system detection module, and if the vacuum pump is smaller than the preset vacuum degree value, the system is normal; if the time is larger than the preset time value, the system is in fault, a signal is sent to the instrument to light an instrument warning lamp and a buzzer, and if the brake pedal is stepped on during the detection period, the diagnosis is carried out again.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A vacuum-assisted braking system, characterized by: the method comprises the following steps: the left side of the vehicle control unit is connected with a power control module for circuit control of the vehicle control unit, the upper side and the lower side of the vehicle control unit are both connected with a fault detection module and a data acquisition module, the fault detection module comprises a vacuum pipeline detection module, a vacuum pump power supply detection module, a vacuum power-assisted system detection module and a pipeline air tightness detection module, and the right side of the vehicle control unit is respectively connected with a control signal output module and a vacuum pump signal acquisition module.
2. A vacuum assisted brake system according to claim 1, wherein: the side of the control signal output module is connected with a logic control circuit and a driving circuit, and the side of the logic control circuit and the side of the driving circuit are connected with a second power supply and a detection resistor, and the detection resistor is connected with a vacuum pump.
3. A vacuum assisted brake system according to claim 2, wherein: the side of power control module is connected with the switch module and the side of switch module is connected with first power supply.
4. A vacuum assisted brake system according to claim 2, wherein: the side of data acquisition module is connected with the sensor module and the side of sensor module is connected with vacuum pressure sensor and pressure signal acquisition module.
5. A vacuum assisted brake system according to claim 1, wherein: the lower part of the fault detection module is connected with an alarm module which comprises a fault lamp and a buzzer.
6. A vacuum assisted brake system according to claim 2, wherein: the logic control circuit is respectively connected with the processor and the power supply control module, and the driving circuit is connected between the logic control circuit and the vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210304858.1A CN114802147A (en) | 2022-03-23 | 2022-03-23 | Vacuum boosting brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210304858.1A CN114802147A (en) | 2022-03-23 | 2022-03-23 | Vacuum boosting brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114802147A true CN114802147A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210304858.1A Pending CN114802147A (en) | 2022-03-23 | 2022-03-23 | Vacuum boosting brake system |
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| Country | Link |
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| CN (1) | CN114802147A (en) |
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|---|---|---|---|---|
| US20050023887A1 (en) * | 2003-07-29 | 2005-02-03 | Delphi Technologies Inc. | Vacuum actuated brake pressure intensifier |
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| CN104118420A (en) * | 2014-07-30 | 2014-10-29 | 重庆长安汽车股份有限公司 | Fault diagnosis method for blade electric vehicle vacuum assistance brake system |
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| CN106274880A (en) * | 2016-08-31 | 2017-01-04 | 北京新能源汽车股份有限公司 | A kind of brake boost control system and brake boost control method |
| CN107117155A (en) * | 2017-04-26 | 2017-09-01 | 北京新能源汽车股份有限公司 | Fault detection method, device and the automobile of the force aid system for braking of electric automobile |
| CN107458362A (en) * | 2017-07-19 | 2017-12-12 | 北京新能源汽车股份有限公司 | The control device and automobile of a kind of vacuum boosting braking system |
| CN109383485A (en) * | 2018-10-26 | 2019-02-26 | 齐齐哈尔四达铁路设备有限责任公司 | Collection control Block brake bicycle tries wind apparatus |
| CN109532807A (en) * | 2018-12-29 | 2019-03-29 | 北京汽车股份有限公司 | Vacuum boost system, the control method of vacuum boost system and vehicle |
| CN112319447A (en) * | 2020-11-05 | 2021-02-05 | 东风柳州汽车有限公司 | Electric automobile vacuum system, control method and vehicle |
-
2022
- 2022-03-23 CN CN202210304858.1A patent/CN114802147A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050023887A1 (en) * | 2003-07-29 | 2005-02-03 | Delphi Technologies Inc. | Vacuum actuated brake pressure intensifier |
| CN102815288A (en) * | 2011-06-10 | 2012-12-12 | 北汽福田汽车股份有限公司 | Electronic vacuum pump control device, vacuum boosting system and vacuum boosting method |
| CN104118420A (en) * | 2014-07-30 | 2014-10-29 | 重庆长安汽车股份有限公司 | Fault diagnosis method for blade electric vehicle vacuum assistance brake system |
| CN204250037U (en) * | 2014-11-03 | 2015-04-08 | 重庆小康工业集团股份有限公司 | A kind of electric vehicle brake power-assisted controller for vacuum pump |
| CN106274880A (en) * | 2016-08-31 | 2017-01-04 | 北京新能源汽车股份有限公司 | A kind of brake boost control system and brake boost control method |
| CN107117155A (en) * | 2017-04-26 | 2017-09-01 | 北京新能源汽车股份有限公司 | Fault detection method, device and the automobile of the force aid system for braking of electric automobile |
| CN107458362A (en) * | 2017-07-19 | 2017-12-12 | 北京新能源汽车股份有限公司 | The control device and automobile of a kind of vacuum boosting braking system |
| CN109383485A (en) * | 2018-10-26 | 2019-02-26 | 齐齐哈尔四达铁路设备有限责任公司 | Collection control Block brake bicycle tries wind apparatus |
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| CN112319447A (en) * | 2020-11-05 | 2021-02-05 | 东风柳州汽车有限公司 | Electric automobile vacuum system, control method and vehicle |
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Application publication date: 20220729 |
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