CN106441938A - Dynamic testing device of vehicle exhaust system - Google Patents
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Abstract
本发明提供了一种车辆排气系统的动态测试装置,包括六自由度试验台1、车辆启停模拟系统2、排气管10、独立线性作动器11、发动机8及传动轴固定夹具6;发动机8固设于六自由度试验台1上,传动轴固定夹具6将发动机输出轴9固设在六自由度试验台1上,排气管10与发动机8的排气歧管密封连接,独立线性作动器11固定支撑排气管10,车辆启停状态模拟系统2与传动轴固定夹具6连接。本发明应用六自由度试验台和独立线性作动器的充分配合使用,确保了可以同时对排气管冷热两端进行动态模拟测试,也可以模拟车辆在启动和停止时的特殊状态,以实现动态测试装置的全方位模拟,具有模拟测量范围广,使用便捷的优点。
The present invention provides a dynamic test device for a vehicle exhaust system, comprising a six-degree-of-freedom test bench 1, a vehicle start-stop simulation system 2, an exhaust pipe 10, an independent linear actuator 11, an engine 8 and a transmission shaft fixing fixture 6; the engine 8 is fixed on the six-degree-of-freedom test bench 1, the transmission shaft fixing fixture 6 fixes the engine output shaft 9 on the six-degree-of-freedom test bench 1, the exhaust pipe 10 is sealed and connected to the exhaust manifold of the engine 8, the independent linear actuator 11 fixes and supports the exhaust pipe 10, and the vehicle start-stop state simulation system 2 is connected to the transmission shaft fixing fixture 6. The present invention uses the full coordination of the six-degree-of-freedom test bench and the independent linear actuator to ensure that the cold and hot ends of the exhaust pipe can be dynamically simulated at the same time, and the special state of the vehicle when starting and stopping can also be simulated to achieve all-round simulation of the dynamic test device, which has the advantages of a wide simulation measurement range and convenient use.
Description
技术领域technical field
本发明属于汽车检测领域,尤其是涉及一种车辆排气系统的动态测试装置。The invention belongs to the field of automobile detection, in particular to a dynamic test device for a vehicle exhaust system.
背景技术Background technique
在现有技术条件下,汽车排气系统的耐久性成为衡量一台汽车质量的重要标准,为了对汽车排气系统做最为可靠的测试,就需要全面测试分析汽车排气系统,在各种实际路况下的技术表现,这就需要模拟汽车排气系统在各种路况条件下的工作状态。Under the current technical conditions, the durability of the automobile exhaust system has become an important criterion for measuring the quality of a car. In order to do the most reliable test on the automobile exhaust system, it is necessary to comprehensively test and analyze the automobile exhaust system. Technical performance under road conditions, which requires simulating the working state of the automobile exhaust system under various road conditions.
与此同时,全部汽车排气系统可以分为热端与冷端,一般认为挠性节之前部分为热端,挠性节之后的部分为冷端。通常排气系统热端刚度比较大,温度也较高,热端的耐久性问题主要由发动机的振动导致;对于排气系统冷端,由于在汽车排气系统冷热两端之间设有挠性节,可以衰减发动机的振动,故排气系统冷端的耐久性通常是由车辆底盘影响决定。因此研究汽车排气系统可靠性,就需结合汽车排气系统冷热两端分析,同时关注发动机状态和车辆底盘状态对汽车排气系统的影响,因此技术研发人员需要一种可以同时模拟发动机和车辆底盘变化情况,对车辆排气系统进行动态分析测试的装置。At the same time, the entire automobile exhaust system can be divided into a hot end and a cold end. It is generally considered that the part before the flexible joint is the hot end, and the part after the flexible joint is the cold end. Generally, the hot end of the exhaust system has relatively high stiffness and high temperature, and the durability problem of the hot end is mainly caused by the vibration of the engine; for the cold end of the exhaust system, since there is a flexible The section can attenuate the vibration of the engine, so the durability of the cold end of the exhaust system is usually determined by the impact of the vehicle chassis. Therefore, to study the reliability of the automobile exhaust system, it is necessary to combine the analysis of the hot and cold ends of the automobile exhaust system, and pay attention to the influence of the engine state and the vehicle chassis state on the automobile exhaust system. Therefore, technology developers need a method that can simultaneously simulate the engine and A device for dynamic analysis and testing of the vehicle exhaust system for changes in the vehicle chassis.
发明内容Contents of the invention
有鉴于此,本发明旨在提出一种车辆排气系统的动态测试装置,以实现可以同时模拟发动机和车辆底盘变化情况,对汽车排气系统进行动态全方位测试。In view of this, the present invention aims to propose a dynamic testing device for the exhaust system of a vehicle, so as to simultaneously simulate the changes of the engine and the chassis of the vehicle, and conduct a dynamic all-round test on the exhaust system of the vehicle.
为达到上述目的,本发明的技术方案是这样实现的:In order to achieve the above object, technical solution of the present invention is achieved in that way:
一种车辆排气系统的动态测试装置,包括六自由度试验台1、车辆启停模拟系统2、排气管10、独立线性作动器11、发动机8及传动轴固定夹具6;发动机8固设于六自由度试验台1上,传动轴固定夹具6将发动机输出轴9固设在六自由度试验台1上,排气管10与发动机8的排气歧管密封连接,独立线性作动器11固定支撑排气管10,车辆启停状态模拟系统2与传动轴固定夹具6连接。A dynamic testing device for a vehicle exhaust system, comprising a six-degree-of-freedom test bench 1, a vehicle start-stop simulation system 2, an exhaust pipe 10, an independent linear actuator 11, an engine 8, and a transmission shaft fixing fixture 6; Set on the six-degree-of-freedom test bench 1, the transmission shaft fixing fixture 6 fixes the engine output shaft 9 on the six-degree-of-freedom test bench 1, the exhaust pipe 10 is sealed and connected with the exhaust manifold of the engine 8, and operates independently and linearly The device 11 fixedly supports the exhaust pipe 10, and the vehicle start-stop state simulation system 2 is connected with the drive shaft fixing fixture 6.
六自由度试验台1搭载发动机8,可模拟发动机8的各种路况状态,独立线性作动器11固定支撑排气管10,可模拟汽车底盘的各种可能状态,六自由度试验台1与独立线性作动器11的配合使用,实现了对排气管10冷热两端各种情况的模拟测试。The six-degree-of-freedom test bench 1 is equipped with an engine 8, which can simulate various road conditions of the engine 8. The independent linear actuator 11 fixedly supports the exhaust pipe 10, and can simulate various possible states of the automobile chassis. The six-degree-of-freedom test bench 1 and The combined use of the independent linear actuator 11 realizes the simulated test of various conditions at the hot and cold ends of the exhaust pipe 10 .
进一步的,发动机8通过发动机固定夹具7固设在六自由度试验台1上;发动机8前后两端对称各设一个传动轴固定夹具6。Further, the engine 8 is fixed on the six-degree-of-freedom test bench 1 through the engine fixing jig 7; the front and rear ends of the engine 8 are respectively provided with a transmission shaft fixing jig 6 symmetrically.
进一步的,发动机8前后两侧对称各设一个车辆启停状态模拟系统2。Further, a vehicle start-stop state simulation system 2 is provided symmetrically on the front and rear sides of the engine 8 .
进一步的,发动机8前后两侧对称各设一个连杆固定连接座3,连杆固定连接座3的一端通过外施力连杆4与车辆启停状态模拟系统2的输出端固连,连杆固定连接座3的另一端通过内施力连杆5与传动轴固定夹具6固连。Further, a connecting rod fixed connecting seat 3 is arranged symmetrically on both sides of the front and rear of the engine 8, and one end of the connecting rod fixed connecting seat 3 is fixedly connected with the output end of the vehicle start-stop state simulation system 2 through the external force connecting rod 4, and the connecting rod is fixedly connected The other end of the seat 3 is fixedly connected with the transmission shaft fixing fixture 6 through the internal force applying connecting rod 5 .
车辆启停状态模拟系统2即为对发动机施加预设力的力学约束装置,以模拟发动机启动和停止瞬间的工作状态,车辆启停状态模拟系统2的输出端通过内外施力连杆,与传动轴固定夹具6连接。The vehicle start-stop state simulation system 2 is a mechanical restraint device that applies a preset force to the engine to simulate the working state of the engine at the moment of starting and stopping. Clamp 6 is connected.
进一步的,独立线性作动器11上端设有吊耳12,吊耳12设有挂钩13,排气管10与挂钩13固定连接。Further, the upper end of the independent linear actuator 11 is provided with a lifting lug 12 , and the lifting lug 12 is provided with a hook 13 , and the exhaust pipe 10 is fixedly connected with the hook 13 .
进一步的,独立线性作动器11依据排气管10形状分布设置六个。Further, six independent linear actuators 11 are distributed according to the shape of the exhaust pipe 10 .
独立线性作动器11与排气管10固连,可模拟汽车底盘对排气管10的各种作用影响。The independent linear actuator 11 is fixedly connected with the exhaust pipe 10, which can simulate various effects of the automobile chassis on the exhaust pipe 10.
进一步的,发动机固定夹具7设有发动机左悬置安装点71、发动机右悬置安装点72及发动机后悬置安装点73。Further, the engine fixing fixture 7 is provided with an engine left suspension installation point 71 , an engine right suspension installation point 72 and an engine rear suspension installation point 73 .
发动机安装点成U型设计,确保了发动机固定夹具7具有良好的固定效果。The engine mounting point is designed in a U shape, which ensures that the engine fixing fixture 7 has a good fixing effect.
相对于现有技术,本发明的一种车辆排气系统的动态测试装置具有以下优势:Compared with the prior art, a dynamic testing device of a vehicle exhaust system of the present invention has the following advantages:
本发明的一种车辆排气系统的动态测试装置,包括六自由度试验台、车辆启停状态模拟系统及独立线性作动器;六自由度试验台和独立线性作动器的配合使用,确保了可以同时对排气管冷热两端进行动态模拟测试,车辆启停状态模拟系统可以模拟车辆在启动和停止时的特殊状态,以实现动态测试装置的全方位模拟,具有模拟测量范围广,测量精度高,使用便捷的优点。A dynamic testing device for a vehicle exhaust system of the present invention comprises a six-degree-of-freedom test bench, a vehicle start-stop state simulation system and an independent linear actuator; the combined use of the six-degree-of-freedom test bench and an independent linear actuator ensures that In order to conduct dynamic simulation tests on both ends of the exhaust pipe at the same time, the vehicle start-stop state simulation system can simulate the special state of the vehicle when it starts and stops, so as to realize the all-round simulation of the dynamic test device. It has a wide range of simulation measurement, The advantages of high measurement accuracy and convenient use.
附图说明Description of drawings
构成本发明的一部分的附图用来提供对本发明的进一步理解,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:
图1为本发明实施例的一种车辆排气系统的动态测试装置结构示意图;Fig. 1 is a schematic structural diagram of a dynamic testing device for a vehicle exhaust system according to an embodiment of the present invention;
图2为本发明实施例的一种车辆排气系统的动态测试装置发动机固定夹具示意图。Fig. 2 is a schematic diagram of an engine fixing fixture of a dynamic testing device for a vehicle exhaust system according to an embodiment of the present invention.
图3为本发明实施例的一种车辆排气系统的动态测试装置独立线性作动器示意图;Fig. 3 is a schematic diagram of an independent linear actuator of a dynamic testing device for a vehicle exhaust system according to an embodiment of the present invention;
图4为本发明实施例的一种车辆排气系统的动态测试装置原理框图。Fig. 4 is a functional block diagram of a dynamic testing device for a vehicle exhaust system according to an embodiment of the present invention.
附图标记说明:Explanation of reference signs:
1-六自由度试验台;2-车辆启停状态模拟系统;3-连杆固定连接座;4-外施力连杆;5-内施力连杆;6-传动轴固定夹具;7-发动机固定夹具;71-发动机左悬置安装点;72-发动机右悬置安装点;73-发动机后悬置安装点;8-发动机;9-发动机输出轴;10-排气管;11-独立线性作动器;12-吊耳;13-挂钩。1-Six degrees of freedom test bench; 2-Vehicle start-stop state simulation system; 3-Connecting rod fixed connection seat; 4-External force connecting rod; 5-Inner force connecting rod; 6-Drive shaft fixing fixture; 7-Engine fixing fixture; 71-engine left mounting point; 72-engine right mounting point; 73-engine rear mounting point; 8-engine; 9-engine output shaft; 10-exhaust pipe; 11-independent linear actuator ; 12-hanging lug; 13-hook.
具体实施方式detailed description
需要说明的是,在不冲突的情况下,本发明中的实施例及实施例中的特征可以相互组合。It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
在本发明的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”等仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”等的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中,除非另有说明,“多个”的含义是两个或两个以上。In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be interpreted as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以通过具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on specific situations.
下面将参考附图并结合实施例来详细说明本发明。The present invention will be described in detail below with reference to the accompanying drawings and examples.
如图1-4所示,一种车辆排气系统的动态测试装置,包括六自由度试验台1、车辆启停模拟系统2、排气管10、独立线性作动器11、发动机8及传动轴固定夹具6;发动机8固设于六自由度试验台1上,传动轴固定夹具6将发动机输出轴9固设在六自由度试验台1上,排气管10与发动机8的排气歧管密封连接,独立线性作动器11固定支撑排气管10,车辆启停状态模拟系统2与传动轴固定夹具6连接。As shown in Figures 1-4, a dynamic test device for a vehicle exhaust system includes a six-degree-of-freedom test bench 1, a vehicle start-stop simulation system 2, an exhaust pipe 10, an independent linear actuator 11, an engine 8 and a transmission Shaft fixing fixture 6; engine 8 is fixed on the six-degree-of-freedom test bench 1, and the transmission shaft fixing fixture 6 fixes the engine output shaft 9 on the six-degree-of-freedom test bench 1, and the exhaust pipe 10 and the exhaust manifold of the engine 8 The pipes are sealed and connected, the independent linear actuator 11 fixedly supports the exhaust pipe 10 , and the vehicle start-stop state simulation system 2 is connected with the drive shaft fixing fixture 6 .
六自由度试验台1搭载发动机8,可模拟发动机8的各种路况状态,独立线性作动器11固定支撑排气管10,可模拟汽车底盘的各种可能状态,六自由度试验台1与独立线性作动器11的配合使用,实现了对排气管10冷热两端各种情况的模拟测试。The six-degree-of-freedom test bench 1 is equipped with an engine 8, which can simulate various road conditions of the engine 8. The independent linear actuator 11 fixedly supports the exhaust pipe 10, and can simulate various possible states of the automobile chassis. The six-degree-of-freedom test bench 1 and The combined use of the independent linear actuator 11 realizes the simulated test of various conditions at the hot and cold ends of the exhaust pipe 10 .
在本实施例的实际应用中,首先把发动机固定在六自由度试验台1上,车辆启停状态模拟系统2与六自由度试验台连接,然后排气管10与发动机8连接,独立线性作动器11支撑固定排气管10,根据测试分析需要调节六自由度试验台1和独立线性作动器11参数,以模拟各种可能路况。In the practical application of this embodiment, the engine is first fixed on the six-degree-of-freedom test stand 1, the vehicle start-stop state simulation system 2 is connected with the six-degree-of-freedom test stand, and then the exhaust pipe 10 is connected with the engine 8 for independent linear operation. The actuator 11 supports and fixes the exhaust pipe 10, and the parameters of the six-degree-of-freedom test bench 1 and the independent linear actuator 11 are adjusted according to the test analysis to simulate various possible road conditions.
在本实施例中,车辆启停状态模拟系统为车辆启停状态TIF系统。In this embodiment, the vehicle start-stop state simulation system is a vehicle start-stop state TIF system.
如图1-4所示,发动机8通过发动机固定夹具7固设在六自由度试验台1上;发动机8前后两端对称各设一个传动轴固定夹具6。发动机8前后两侧对称各设一个车辆启停状态模拟系统2。As shown in Figures 1-4, the engine 8 is fixed on the six-degree-of-freedom test bench 1 through the engine fixing fixture 7; the front and rear ends of the engine 8 are symmetrically provided with a transmission shaft fixing fixture 6 respectively. A vehicle start-stop state simulation system 2 is respectively arranged symmetrically on both sides of the front and back of the engine 8 .
如图1所示,发动机8前后两侧对称各设一个连杆固定连接座3,连杆固定连接座3的一端通过外施力连杆4与车辆启停状态模拟系统2的输出端固连,连杆固定连接座3的另一端通过内施力连杆5与传动轴固定夹具6固连。As shown in Figure 1, a connecting rod fixed connecting seat 3 is arranged symmetrically on both sides of the front and rear of the engine 8, and one end of the connecting rod fixed connecting seat 3 is fixedly connected to the output end of the vehicle start-stop state simulation system 2 through an externally applied connecting rod 4. The other end of the rod fixing connection seat 3 is fixedly connected with the drive shaft fixing fixture 6 through the inner force applying connecting rod 5 .
车辆启停状态模拟系统2即为对发动机施加预设力的力学约束装置,以模拟发动机启动和停止瞬间的工作状态,车辆启停状态模拟系统2的输出端通过内外施力连杆,与传动轴固定夹具6连接。The vehicle start-stop state simulation system 2 is a mechanical restraint device that applies a preset force to the engine to simulate the working state of the engine at the moment of starting and stopping. Clamp 6 is connected.
如图1所示,独立线性作动器11依据排气管10形状分布设置六个。As shown in FIG. 1 , six independent linear actuators 11 are distributed according to the shape of the exhaust pipe 10 .
独立线性作动器11与排气管10固连,可模拟汽车底盘对排气管10的各种作用影响。The independent linear actuator 11 is fixedly connected with the exhaust pipe 10, which can simulate various effects of the automobile chassis on the exhaust pipe 10.
如图3所示,独立线性作动器11上端设有吊耳12,吊耳12设有挂钩13,排气管10与挂钩13固定连接。As shown in FIG. 3 , the upper end of the independent linear actuator 11 is provided with a lifting lug 12 , and the lifting lug 12 is provided with a hook 13 , and the exhaust pipe 10 is fixedly connected with the hook 13 .
如图2所示,发动机固定夹具7设有发动机左悬置安装点71、发动机右悬置安装点72及发动机后悬置安装点73。As shown in FIG. 2 , the engine fixing fixture 7 is provided with an engine left suspension installation point 71 , an engine right suspension installation point 72 and an engine rear suspension installation point 73 .
发动机安装点成U型设计,确保了发动机固定夹具7具有良好的固定效果。The engine mounting point is designed in a U shape, which ensures that the engine fixing fixture 7 has a good fixing effect.
以上仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention within.
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