JP2007163303A - Power train testing device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and speedily perform a test about a plurality of combinations of an engine and a transmission. <P>SOLUTION: The testing device 1 has an engine bench BEG and a transmission bench BTM. The engine bench BEG has a first dynamometer DM1 capable of applying a load torque to a crankshaft CS. The transmission bench BTM has a second and third dynamometers DM2 and DM3 capable of applying a driving torque and load torque to an input shaft ISTM and output shaft OSTM of a transmission. The engine or transmission is tested while controlling the first and second dynamometers DM1 and DM2 so that the engine EG mounted on the engine bench BEG and the transmission TM mounted on the transmission bench BTM are synchronously operated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power train test apparatus and method.

  Conventionally, the engine and transmission are mounted on the bench, the engine crankshaft and the transmission input shaft are mechanically connected, and the engine is operated while applying load torque to the transmission output shaft by a dynamometer. There is known a power train test method for testing an engine or a transmission.

  In the main bench, the engine output shaft and the first load torque application device are connected to the input shaft and output shaft of the first transmission, respectively, and in the sub bench, the drive torque application device and Each of the two load torque application devices is connected, and the first transmission is tested while operating the engine while applying the load torque to the output shaft of the first transmission while applying the driving torque to the first transmission, The driving torque application device is operated synchronously with the engine, the driving torque is applied to the input shaft of the second transmission, and the load torque is applied to the output shaft of the second transmission, and the second transmission is tested. Watoren testing device is known (see Patent Document 1). In this way, two transmissions can be tested simultaneously with one engine.

JP-A-5-87695 JP-A-5-87696

  However, in the former case, after a test for a combination of a certain engine and a certain transmission is completed, in order to perform a test for a combination of the certain engine and another transmission, And then another transmission must be mounted on the bench to mechanically connect the crankshaft of the engine and the input shaft of the other transmission. That is, there is a problem that it takes a lot of time and labor to test a plurality of combinations of the engine and the transmission.

  Even in the latter case, for example, in order to perform a test on a combination of a plurality of engines and one or a plurality of transmissions, it is necessary to change the engine mounted on the main bench. There is a problem.

  Accordingly, an object of the present invention is to provide a power train test apparatus and method that can easily and quickly perform tests on a plurality of combinations of an engine and a transmission.

  In order to solve the above-described problems, according to the present invention, an engine bench on which an engine is mounted, which is capable of applying a load torque to a crankshaft of the engine. An engine bench, a transmission bench on which the transmission is mounted, drive torque applying means capable of applying drive torque to the input shaft of the transmission, and a load on the output shaft of the transmission A transmission bench having a transmission-side load torque applying means capable of applying a torque, and an engine so that the engine mounted on the engine bench and the transmission mounted on the transmission bench are operated in synchronization with each other. Powertrain testing apparatus anda testing means for testing of the engine or transmission while controlling the load torque applying means and the driving torque applying means is provided.

  According to a second aspect, in the first aspect, at least one engine bench is provided, at least one transmission bench is provided, and one selected from the at least one engine bench. The engine side of the selected engine bench so that an engine mounted on one engine bench and a transmission mounted on one transmission bench selected from the at least one transmission bench are operated in synchronization with each other. The engine or transmission is tested while controlling the load torque applying means and the drive torque applying means of the selected transmission bench.

  According to a third invention, in the first or second invention, while controlling the transmission-side load torque applying means so as to simulate the state when the engine and the transmission are mounted on the vehicle and the vehicle travels. The engine or transmission is tested.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the driving torque applied to the input shaft of the transmission by the means for detecting the engine speed and the driving torque applying means is calculated. And detecting means for controlling the engine side load torque and the driving torque applying means so that the engine and the transmission are operated in synchronization with each other based on the detected engine speed and driving torque. is doing.

  According to a fifth aspect of the present invention for solving the above-described problem, an engine bench on which an engine is mounted, the engine side being capable of applying a load torque to the crankshaft of the engine An engine bench having a load torque application means is prepared, and a transmission bench is provided with a transmission, wherein a drive torque application means capable of applying a drive torque to an input shaft of the transmission, A transmission bench having a transmission-side load torque applying means capable of applying a load torque to the output shaft of the transmission is prepared. The engine is mounted on the engine bench and the transmission is mounted on the transmission bench. The Powertrain test method to testing the engine or transmission while controlling the engine-side load torque applying means and the driving torque applying means is provided so that the lance missions are synchronously operated each other.

  Tests for multiple combinations of engine and transmission can be performed easily and in a short time.

  Referring to FIG. 1, a test apparatus 1 for testing a power train includes an engine bench BEG on which an engine EG is mounted and an engine bench BEG on which a transmission TM is mounted. And a separate transmission bench BTM. The engine EG includes an engine body EGB and an engine control device CEG composed of a computer.

  The engine bench BEG has a first dynamometer DM1, and when the rotary shaft SDM1 is connected to the crankshaft CS of the engine body EGB via the clutch CL, the first dynamometer DM1 applies a load torque to the crankshaft CS. Can be applied. Further, the engine bench BEG drives a throttle actuator ATH for controlling the throttle opening of the engine EG, a first dynamometer controller CDM1 for controlling the first dynamometer DM1, and a clutch CL. A clutch actuator ACL is provided.

  On the other hand, the transmission bench BTM has a second dynamometer DM2 and a third dynamometer DM3. The second dynamometer DM2 can apply a driving torque to the input shaft ISTM when the rotary shaft SDM2 is connected to the input shaft ISTM of the transmission TM. When connected to the output shaft OSTM, a load torque can be applied to the output shaft OSTM. The transmission bench BTM also includes a second dynamometer controller CDM2 for controlling the second dynamometer DM2, a third dynamometer controller CDM3 for controlling the third dynamometer DM3, A shift actuator ASH for changing the shift stage or gear ratio of the transmission TM is provided.

  The transmission bench BTM further includes the engine controller CEG, the first dynamometer controller CDM1, the second dynamometer controller CDM2, the third dynamometer controller CDM3, the clutch actuator ACL, the throttle actuator ATH, and A main control device MC comprising a computer for controlling the shift actuator ASH is provided.

  In this case, the second dynamometer control device CDM2, the third dynamometer control device CDM3, the shift drive device ATM and the main control device MC provided in the transmission bench BTM are electrically connected to each other in the transmission bench BTM. It is connected. In contrast, the engine control device CEG, the first dynamometer control device CDM1, the clutch drive device ACL, the throttle actuator ATH, and the main control device MC provided on the engine bench BEG are provided on the engine bench BEG. The electrical contacts CPEG and the electrical contacts CPTM provided on the transmission bench BTM are electrically connected to each other. That is, by electrically connecting these electrical contacts CPEG and CPTM to each other, the engine control device CEG, the first dynamometer control device CDM1, the clutch drive device ACL, the throttle actuator ATH, and the main control device MC are electrically connected. Connected to.

  The first dynamometer DM1 described above can detect the rotational speed of the rotating shaft SDM1 and the torque acting on the rotating shaft SDM1, that is, the engine speed and the torque acting on the crankshaft CS. The second dynamometer DM2 can detect the rotational speed of the rotary shaft SDM2 and the torque acting on the rotational shaft SDM2, that is, the rotational speed of the input shaft ISTM of the transmission TM and the torque acting on the input shaft ISTM. The third dynamometer DM3 can detect the rotation speed of the rotation shaft SDM3 and the torque acting on the rotation shaft SDM3, that is, the rotation speed of the output shaft OSTM of the transmission TM and the torque acting on the output shaft OSTM. The detection results of these dynamometers DM1, DM2, DM3 are input to the main controller MC.

  In the embodiment according to the present invention, when the specific engine EG and the specific transmission TM are combined, the test can be performed on the engine EG and / or the transmission TM. The specific procedure will be described. First, the engine EG is mounted on the engine bench BEG, the crankshaft CS is mechanically connected to the rotary shaft SDM1 of the first dynamometer DM1 via the clutch CL, and the throttle valve is connected to the throttle valve of the engine EG. An actuator ATH is mechanically coupled. Further, the transmission TM is mounted on the transmission bench BTM, the input shaft ISTM of the transmission TM is mechanically connected to the rotating shaft SDM2 of the second dynamometer DM2, and the output shaft OSTM of the transmission TM is connected to the third dynamometer DM3. The shift actuator ASH is also mechanically connected to the transmission TM.

  Next, the electrical contact CPEG of the engine bench BEG and the electrical contact CPTM of the transmission bench BTM are electrically connected to each other. Of course, the engine EG and the transmission TM may be mounted on the engine bench BEG and the transmission bench BTM, respectively, after the electrical contacts CPEG and CPTM are connected.

  Next, the operation of the engine EG is started, and the operation of the first dynamometer DM1, the second dynamometer DM2, and the third dynamometer DM3 is also started. In this case, in the embodiment according to the present invention, the engine EG and the transmission TM are mounted on the vehicle, and the third state is simulated so that the vehicle travels so that the vehicle speed matches a predetermined vehicle speed pattern. The dynamometer DM3 is controlled. That is, for example, a load torque considering vehicle resistance determined according to the vehicle speed is applied to the output shaft OSTM of the transmission TM by the third dynamometer DM3. Further, the engine EG, the throttle actuator ATH, the third dynamometer DM3, and the shift actuator so that the engine output torque, the throttle opening, the brake depression amount, and the shift stage necessary for making the vehicle speed coincide with the target vehicle speed are realized. ASH is controlled.

  In addition, the first dynamometer DM1 and the second dynamometer DM2 are controlled so that the engine EG and the transmission TM are operated in synchronization with each other. More specifically, the first dynamometer DM1 controls the crankshaft so that the torque applied to the crankshaft CS matches the torque applied to the input shaft ISTM of the transmission TM detected by the second dynamometer DM2. Load torque is applied to CS, and drive torque is applied to the input shaft ISTM by the second dynamometer DM2 so that the rotational speed of the input shaft ISTM matches the engine speed detected by the first dynamometer DM1. Is done. As a result, it can be considered as if the crankshaft CS of the engine EG and the input shaft ISTM of the transmission TM are mechanically connected to each other via the clutch CL.

  While controlling the engine EG and the dynamometers DM1, DM2, and DM3 in this way, for example, tests on the fuel consumption rate and the exhaust gas characteristics are performed.

  Thus, in the embodiment according to the present invention, in order to perform the test, it is only necessary to electrically connect the engine bench BEG on which the engine EG is mounted and the transmission bench BTM on which the transmission TM is mounted. There is no need to mechanically connect the crankshaft CS and the input shaft ISTM of the transmission TM.

  As a result, a test for a plurality of combinations of the engine EG and the transmission TM can be easily performed in a short time. This will be described in detail with reference to FIG.

  FIG. 2 shows a case where m engine benches BEG are provided and n transmission benches BTM are provided (m, n = 1, 2,...). In the example shown in FIG. 2, different engine EGi are mounted on the engine bench BEGi (i = 1, 2,... M), respectively, and the transmission bench BTMi (j = 1, 2,. Different transmissions TMj are mounted.

  In this case, when the test for the engine EGi or the transmission TMj when the engine EGi and the transmission TMj are combined, first, the electrical contact CPEGi of the engine bench BEGi and the electrical contact CPEGj of the transmission bench BTMj are electrically connected to each other. Then, the test is performed while the first dynamometer of the engine bench BEGi and the second dynamometer of the transmission bench BTMj are controlled so that the engine EGi and the transmission TMj are operated in synchronization with each other.

  Then, when this engine EGi and transmission TMh are combined with another transmission TMh (h = 1, 2,... N), when these engines EGi or transmission TMh are to be tested, the electrical contacts of engine bench BEGi CPEGi may be removed from the electrical contact CPTMj of the transmission bench BTMj and electrically connected to the electrical contact CPEGh of the transmission bench BTMh. Alternatively, when the engine EGk (k = 1, 2,... M) other than the engine EGi and the transmission TMj are to be tested, the electrical contact CPTMj of the transmission bench BTMj is to be performed. Is removed from the electrical contact CPEGi of the engine bench BEGi and electrically connected to the electrical contact CPEGk of the engine bench BEGk. There is no need to disengage and reconnect the crankshaft and the input shaft of the transmission, and there is no need to remove the engine or transmission from the bench and install it again. Therefore, a test for a plurality of combinations of the engine EG and the transmission TM can be easily performed in a short time.

  In the above-described embodiment, the main control device MC is provided in the transmission bench BTM. However, the main control device MC may be provided on the engine bench BEG, or may be provided outside the engine bench BEG and the transmission bench BTM. In the latter case, it can be considered that the engine bench BEG and the transmission bench BTM are electrically connected via the main controller MC.

1 is an overall view of a test apparatus according to an embodiment of the present invention. It is a figure for demonstrating the Example by this invention.

Explanation of symbols

1 Test Equipment BEG Engine Bench BTM Transmission Bench EG Engine CS Crankshaft TM Transmission ISTM Transmission Input Shaft OSTM Transmission Output Shaft DM1 1st Dynamometer DM2 2nd Dynamometer DM3 3rd Dynamometer

Claims (5)

  An engine bench on which an engine is mounted, the engine bench having engine-side load torque applying means capable of applying load torque to the crankshaft of the engine, and a transmission And a transmission torque application means capable of applying a drive torque to an input shaft of the transmission, and a transmission side load torque application capable of applying a load torque to an output shaft of the transmission. An engine-side load torque applying means and a drive torque applying means so that the engine mounted on the engine bench and the transmission mounted on the transmission bench are operated in synchronization with each other. Powertrain testing apparatus anda testing means for testing of the engine or transmission while controlling.   At least one engine bench is provided, at least one transmission bench is provided, an engine mounted on one engine bench selected from the at least one engine bench, and the at least one transmission Engine-side load torque application means of the selected engine bench and drive torque application of the selected transmission bench so that a transmission mounted on one transmission bench selected from the bench is operated in synchronization with each other 2. The power train test apparatus according to claim 1, wherein the engine or transmission is tested while controlling the means.   The engine or transmission is tested while controlling the transmission-side load torque application means so that the state when the engine and the transmission are mounted on the vehicle and the vehicle travels is simulated. Powertrain testing equipment.   The engine further comprises means for detecting the engine speed and means for detecting the drive torque applied to the input shaft of the transmission by the drive torque applying means, and the engine based on the detected engine speed and drive torque. 4. The power train test apparatus according to claim 1, wherein the engine-side load torque application unit and the drive torque application unit are controlled so that the transmission and the transmission are operated in synchronization with each other. 5.   An engine bench on which an engine is mounted, the engine bench having engine-side load torque applying means capable of applying load torque to the crankshaft of the engine is prepared, and a transmission is mounted A transmission bench configured as described above, wherein a driving torque applying means capable of applying a driving torque to the input shaft of the transmission, and a transmission side load capable of applying a load torque to the output shaft of the transmission A transmission bench having a torque applying means is prepared, and the engine is mounted on the engine bench and the transmission is mounted on the transmission bench so that the engine and the transmission are operated in synchronization with each other. Powertrain test method to testing the engine or transmission while controlling the engine-side load torque applying means and the driving torque applying means.

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