CN110259925B

CN110259925B - Vehicle gear shifting device, vehicle and vehicle gear shifting method

Info

Publication number: CN110259925B
Application number: CN201910431324.3A
Authority: CN
Inventors: 林凡文; 陈月春; 孙晓东; 王保伟; 刘国建; 李作胜
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-12-22
Anticipated expiration: 2039-05-22
Also published as: CN110259925A

Abstract

The invention belongs to the technical field of vehicle control, and particularly relates to a vehicle gear shifting device, a vehicle and a vehicle gear shifting method. The invention provides a vehicle gear shifting device which comprises a compressed gas supply unit, a gear shifting air valve, a transmission cylinder and a whole vehicle post-processing unit, wherein the compressed gas supply unit can provide compressed gas for gear shifting for the transmission cylinder, the gear shifting air valve is in conduction connection with the compressed gas supply unit, the transmission cylinder can receive the compressed gas of different gears output by the gear shifting air valve, and the air outlet end of the whole vehicle post-processing unit is in conduction connection with the gear shifting air valve, so that the gear shifting air valve is heated by utilizing the heat of waste gas exhausted from the air outlet end. According to the vehicle gear shifting device, the gear shifting air valve can be heated by utilizing the heat of waste gas discharged from the gas outlet end of the whole vehicle aftertreatment unit, the icing phenomenon in the gear shifting air valve is eliminated, and therefore high-low gear switching of a vehicle is rapidly achieved by utilizing the gear shifting air valve, and the driving performance of the vehicle is improved.

Description

Vehicle gear shifting device, vehicle and vehicle gear shifting method

Technical Field

The invention belongs to the technical field of vehicle control, and particularly relates to a vehicle gear shifting device, a vehicle and a vehicle gear shifting method.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art. Heavy vehicles are generally equipped with a gearbox (main and auxiliary gearboxes) with switchable high and low gears due to the requirement of driving conditions. The low-speed gear is generally used during starting or heavy load, so that the vehicle has enough dynamic property; when the vehicle runs at a high speed, in order to improve the efficiency and save time, a high-speed gear is generally adopted, and the running speed of the vehicle is ensured to meet the requirement. When the heavy vehicle gearbox is used, a high-low gear change-over switch (a gear shifting head) needs to be configured, and the high-low gear change-over switch is arranged at a gear handle. When the driver switches from the low gear to the high gear, the high-low gear switch needs to be manually shifted to the high gear. The power for switching the high gear and the low gear of the whole vehicle adopts gas in a whole vehicle compressed gas cylinder, namely pneumatic gear shifting.

The winter in the north is cold, and the gearbox is in the first use in the morning, because high temperature high-pressure gas still can't clear away water clean behind the gaseous drying cylinder of whole car in the gas cylinder, consequently when high temperature high-pressure gas meets main derailleur gear shift operation, can appear freezing phenomenon to destroy the process that vice derailleur carried out high-low gear switching command. At the moment, the whole vehicle cannot be switched between a high gear and a low gear, and normal use of a driver is affected.

Disclosure of Invention

The invention aims to at least solve the problem that the vehicle cannot be shifted due to icing in a gearbox of the vehicle. The purpose is realized by the following technical scheme:

a first aspect of the invention proposes a vehicle shift device that includes:

a gearbox cylinder;

a compressed gas supply unit capable of supplying compressed gas for gear shifting to the transmission cylinder;

the gear shifting air valve is in conductive connection with the compressed gas supply unit and used for receiving the compressed gas and outputting the compressed gas to the transmission cylinder through different gears, and the transmission cylinder can receive the compressed gas of different gears output by the gear shifting air valve so as to execute different gear output;

and the air valve is in conductive connection with the air outlet end of the whole vehicle post-processing unit, so that the heat of waste gas discharged from the air outlet end is utilized to heat the air valve.

According to the vehicle gear shifting device, the air outlet end of the whole vehicle post-processing unit is in conductive connection with the gear shifting air valve, so that the gear shifting air valve is heated by using the heat of waste gas discharged from the air outlet end, the icing phenomenon in the gear shifting air valve is eliminated, high-low gear switching of a vehicle is rapidly realized by using the gear shifting air valve, and the driving performance of the vehicle is improved.

In addition, the vehicle gear shifting device according to the present invention may further have the following additional technical features: the vehicle gear shifting device further comprises an engine ECU and an electromagnetic valve, the engine ECU is in electrical communication with the electromagnetic valve, the electromagnetic valve is arranged at the air outlet end of the whole vehicle post-processing unit and a conduction pipeline between the gear shifting air valves, and the engine ECU can control the electromagnetic valve to be opened and closed according to received whole vehicle gear signals.

In some embodiments of the present invention, the vehicle gearshift device further includes a gearshift head, the gearshift head is electrically connected to the gearshift air valve in a communication manner, and the gearshift head is configured to control the gearshift air valve to output different gears.

In some embodiments of the present invention, the compressed gas supply unit includes a vehicle compressed gas cylinder and an air filter, an air inlet of the air filter is connected to the vehicle compressed gas cylinder, and an air outlet of the air filter is connected to the shift gas valve.

In some embodiments of the invention, the shift valve is a dual H-valve.

In some embodiments of the present invention, the vehicle gear shifting device further comprises an external heating unit disposed outside the gear shifting air valve for heating the gear shifting air valve.

In some embodiments of the invention, the external heating unit is a hand-held torch.

In some embodiments of the present invention, the vehicle shifting apparatus further comprises a manual switch in electrical communication with the engine ECU for controlling the engine ECU to open the solenoid valve.

In another aspect of the invention, a vehicle is further provided, and the vehicle is provided with the vehicle gear shifting device.

In another aspect of the present invention, a vehicle gear shifting method is further provided, where the vehicle gear shifting method performs vehicle gear shifting according to the vehicle gear shifting device described above, and includes the following steps:

operating the shift gas valve;

if the gear shifting gas valve can output compressed gas through different gears, the gear shifting process is finished;

if the gear shifting gas valve can not output compressed gas through different gears, the following steps are continuously executed;

sending an instruction signal to enable the engine ECU to control the electromagnetic valve to be opened, so that part of waste gas of the whole vehicle post-processing unit is introduced into the gear shifting air valve through the electromagnetic valve;

detecting gear information of the vehicle;

if the gearbox cylinder can execute different gear outputs, the gear shifting process is finished, and the electromagnetic valve is closed;

and if the gearbox cylinder cannot execute different gear outputs, continuing to open the electromagnetic valve until the gearbox cylinder can execute different gear outputs, and finishing the gear shifting process.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows a structural schematic diagram of a vehicle shifting device according to an embodiment of the present invention.

The reference numerals in the drawings denote the following:

10: a whole vehicle compressed gas cylinder;

20: an air cleaner;

30: a double H gas valve;

40: a gearbox cylinder;

50: vehicle-finishing post-processing unit, 51: an air outlet end;

60: an engine ECU;

70: an electromagnetic valve;

s1: low-gear control gas circuit, S2: and (4) controlling the gas circuit in a high-grade manner.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 schematically shows a structural schematic diagram of a vehicle shifting device according to an embodiment of the present invention. According to an embodiment of the present invention, a vehicle gear shifting device is proposed, which comprises a compressed gas supply unit, a shift gas valve, a gearbox cylinder 40 and a vehicle aftertreatment unit 50. The shift gas valve in this embodiment is a double H-gas valve 30 and the compressed gas supply unit is capable of supplying compressed gas to the vehicle gear shifting device for shifting gears. The compressed gas supply unit is capable of supplying compressed gas to the gearbox cylinder 40 for gear shifting. The double H-valve 30 is in conductive connection with the compressed gas supply unit for receiving compressed gas and outputting the compressed gas to the transmission cylinder 40 through different gears. The transmission cylinder 40 is capable of receiving compressed gas from the dual H-valve 30 in different gear positions to perform different gear position outputs. The air outlet 51 of the vehicle post-processing unit 50 is in conductive connection with the dual H-valve 30, so that the dual H-valve 30 is heated by the heat of the exhaust gas discharged from the air outlet 51.

According to the vehicle gear shifting device, the air outlet end 51 of the whole vehicle aftertreatment unit 50 is in conductive connection with the double H gas valves 30, so that the double H gas valves 30 are heated by heat of waste gas exhausted from the air outlet end 51, the icing phenomenon in the double H gas valves 30 is eliminated, high-low gear switching of a vehicle is rapidly achieved by the double H gas valves 30, and the driving performance of the vehicle is improved.

Further, in some embodiments of the present invention, in order to improve the automation control performance of the vehicle shifting apparatus, an engine ECU60 and a solenoid valve 70 are further included. The engine ECU60 is in electrical communication connection with the electromagnetic valve 70, the electromagnetic valve 70 is arranged on a conducting pipeline between the air outlet end 51 of the whole vehicle post-processing unit 50 and the double H-shaped air valves 30, and the engine ECU60 can control the opening and closing of the electromagnetic valve 70 according to a received whole vehicle gear signal.

Under the low-temperature environment, when a driver is in gear for the first time after parking for a long time, if the gear of the whole vehicle cannot be smoothly switched from a low gear to a high gear, the icing phenomenon possibly occurs in the double H gas valves 30, and therefore the gear shifting failure is caused. At this time, the driver can control the electromagnetic valve 70 to open by the engine ECU 60. When the electromagnetic valve 70 is opened, a part of the exhaust gas discharged from the gas outlet 51 of the vehicle aftertreatment unit 50 is led to the double H gas valve 30 of the transmission to heat the double H gas valve 30. In order to rapidly raise the exhaust gas temperature in the shortest possible time, the engine ECU60 may control the engine speed to be raised to a certain set speed value according to the engine speed raising logic, so as to rapidly raise the exhaust gas energy of the whole vehicle, and eliminate the ice in the double H gas valves 30 by using the exhaust gas heat of the whole vehicle, thereby saving the waiting time of the driver. Meanwhile, the engine ECU60 can receive a vehicle gear signal, and if the engine ECU60 detects that the vehicle gear can change back and forth between a high gear and a low gear, it can be determined that the vehicle can realize free switching between the high gear and the low gear, and no icing phenomenon exists in the double H gas valves 30, and at this time, the engine ECU60 controls the electromagnetic valve 70 to close.

Specifically, a manual switch may be provided in the cabin of the vehicle, which is in electrical communication with the engine ECU 60. The heating signal can be sent to the engine ECU60 by pressing the manual switch, so that the electromagnetic valve 70 is opened through the engine ECU60, the double H gas valves 30 are heated by the exhaust gas discharged from the entire vehicle post-processing unit 50, the ice in the double H gas valves 30 is eliminated, and the utilization rate of the exhaust gas discharged from the entire vehicle post-processing unit 50 is improved. Meanwhile, the manual switch also has an automatic reset function, and when the manual switch is pressed, after the manual switch is turned on to transmit a signal to the engine ECU60, the manual switch can be automatically reset so as to continue the next operation.

Further, in some embodiments of the present invention, the vehicle shifting apparatus further comprises a shift knob. The gear shifting head is in electrical communication connection with the double H gas valves 30, and the gear shifting head is used for controlling the double H gas valves 30 to output different gears.

The gear shifting of the vehicle can be realized by shifting the gear shifting head. As shown in fig. 1, when the vehicle is in the low gear control air passage S1, the control air passage of the vehicle can be changed into the high gear control air passage S2 by dialing the gearshift knob, thereby completing the gear shifting process of the vehicle.

In some embodiments of the present invention, the compressed gas supply unit includes a vehicle compressed gas cylinder 10 and an air cleaner 20, an inlet end of the air cleaner 20 is connected to the vehicle compressed gas cylinder 10, and an outlet end of the air cleaner 20 is connected to the dual H-valve 30.

The whole vehicle compressed air bottle 10 is used for providing compressed air, the air filter 20 is used for drying and filtering the compressed air, however, the compressed air is in a high-temperature and high-pressure environment, and the air filter 20 cannot completely remove moisture in the compressed air, so that the phenomenon of icing easily occurs inside the double H-valve 30 in a low-temperature environment.

As shown in fig. 1, when the vehicle is switched between high and low gears, the compressed gas from the entire vehicle compressed gas cylinder 10 is pressure-regulated by the air pressure regulating valve and then enters the air inlet of the double H gas valve 30. When the gear shifting block is in a low gear position, compressed gas enters a low gear side gas outlet of the transmission cylinder 40 through a low gear side gas outlet of the double H gas valve 30 after passing through a connecting gas pipe, a piston in the transmission cylinder 40 is pushed to move rightwards, and residual gas is discharged from a high gear gas outlet of the double H gas valve 30 through a high gear gas pipe, so that a low gear control gas path S1 is formed. When the high-gear control gas circuit is used, a driver operates the gear shifting block to enable compressed gas to enter the high-gear side gas inlet of the transmission cylinder 40 from the high-gear side gas outlet of the double H gas valve 30 through the gas pipe, the piston of the transmission cylinder 40 is pushed to move leftwards, and residual gas is discharged from the low-gear gas outlet of the double H gas valve 30 through the low-gear gas pipe, so that a high-gear control gas circuit S2 is formed. The direction of the arrows in fig. 1 indicates the direction of movement of the air flow.

In some embodiments of the present invention, the vehicle shifting apparatus further includes an external heating unit provided outside the dual H-valve 30 for heating the dual H-valve 30. The external heating unit can be arranged independently, and can also be in electrical communication with the engine ECU60, so that the external heating unit is controlled by the engine ECU60 to heat the double H gas valves 30, ice in the double H gas valves 30 is further rapidly eliminated, and the normal gear shifting process of the vehicle is ensured.

In some embodiments of the invention, the external heating unit is a hand-held torch. Any icing position of the double H gas valve 30 can be heated at any time by the handheld blowtorch.

Another aspect of the present invention also proposes a vehicle having the vehicle shift device in the above embodiment.

According to the vehicle in the invention, the vehicle gear shifting device in the above embodiment is arranged in the vehicle, and the air outlet end 51 of the whole vehicle aftertreatment unit 50 is in conductive connection with the double H gas valves 30, so that the double H gas valves 30 are heated by using the heat of the exhaust gas discharged from the air outlet end 51, the icing phenomenon in the double H gas valves 30 is eliminated, and thus the double H gas valves 30 are used for quickly realizing high-low gear switching of the vehicle, and improving the driving performance of the vehicle.

Another aspect of the present invention also provides a vehicle gear shifting method for shifting a vehicle according to the vehicle gear shifting apparatus in the above embodiment, including the steps of:

operating the shift gas valve;

detecting gear information of the vehicle;

By using the vehicle gear shifting method, the air outlet end 51 of the whole vehicle post-processing unit 50 is in conductive connection with the double H gas valves 30, so that the double H gas valves 30 are heated by using the heat of the waste gas discharged from the air outlet end 51, the icing phenomenon in the double H gas valves 30 is eliminated, the high-low gear switching of the vehicle is rapidly realized by using the double H gas valves 30, and the driving performance of the vehicle is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A vehicle shifting apparatus, comprising:

a gearbox cylinder;

the gear shifting air valve is communicated with the whole vehicle post-processing unit, and the air outlet end of the whole vehicle post-processing unit is communicated with the gear shifting air valve so as to heat the gear shifting air valve by utilizing the heat of waste gas discharged from the air outlet end;

the vehicle gear shifting device further comprises an engine ECU and an electromagnetic valve, the engine ECU is electrically and communicatively connected with the electromagnetic valve, the electromagnetic valve is arranged on a conducting pipeline between an air outlet end of the whole vehicle post-processing unit and the gear shifting air valve, and the engine ECU can control the electromagnetic valve to be opened and closed according to a received whole vehicle gear signal;

the vehicle gear shifting device further comprises a manual switch, wherein the manual switch is electrically and communicatively connected with the engine ECU and is used for controlling the engine ECU to open the electromagnetic valve.

2. The vehicle shifting apparatus of claim 1, further comprising a shift knob in electrical communication with the shift gas valve, the shift knob configured to control the shift gas valve to perform different gear outputs.

3. The vehicle shifting device according to claim 1, wherein the compressed gas supply unit comprises a vehicle compressed gas cylinder and an air filter, an air inlet end of the air filter is connected with the vehicle compressed gas cylinder, and an air outlet end of the air filter is connected with the shift gas valve.

4. The vehicle shifting apparatus of claim 1, wherein the shift valve is a dual H-valve.

5. The vehicle shifting apparatus of claim 1, further comprising an external heating unit disposed outside the shift air valve for heating the shift air valve.

6. The vehicle shifting apparatus of claim 5, wherein the external heating unit is a hand-held torch.

7. A vehicle characterized by having a vehicle gear shift device according to any one of claims 1 to 6.

8. A vehicle shifting method, characterized in that the vehicle shifting apparatus according to any one of claims 1 to 6 performs vehicle shifting, comprising the steps of:

operating the shift gas valve;

detecting gear information of the vehicle;