Hybrid vehicle new vehicle off-line testing methods, devices, servers and storage media

Abstract

This application discloses a method, device, server, and storage medium for testing new hybrid vehicles before they leave the production line. The testing method includes pre-simulating a high-load desorption pipeline condition. Specific steps include: simultaneously receiving a fuel replenishment activation signal and a fuel detection deactivation signal, and waiting for a second preset duration; within the second preset duration, maintaining the engine in a first operating condition; wherein the first operating condition includes at least: engine speed greater than or equal to a first preset threshold; and engine output torque greater than or equal to a second preset threshold. This application pre-executing the high-load desorption condition reduces the probability of false alarms during the entire EOL test in the formal diagnostic process, thus avoiding repeated workload increases for testing personnel and improving work efficiency to some extent.

Description

Technical Field

[0001] This disclosure generally relates to the field of new vehicle off-line testing, and specifically to a method, apparatus, server, and storage medium for testing new hybrid vehicles off-line. Background Technology

[0002] With increasingly stringent emission and fuel consumption regulations, plug-in hybrid electric vehicles (PHEVs) and hybrid electric vehicles (HEVs) combine the advantages of both gasoline and electric vehicles, gradually becoming the mainstream solution for OEMs to comply with regulations. Especially for PHEV models, the engine is often idle or running intermittently for extended periods. Due to the limited engine operating conditions, the fuel vapor pressure generated during driving cannot be desorbed in time, leading to increased fuel tank pressure and a greater risk of fuel vapor being released into the atmosphere through the carbon canister. To address this, manufacturers typically modify the traditional fuel vapor evaporation system.

[0003] To accommodate changes to the traditional fuel evaporation system and ensure that the entire fuel evaporation system functions properly when a new vehicle rolls off the production line, tests are conducted before the vehicle rolls off the line. However, due to the inability of fuel vapor pressure to be desorbed in a timely manner, false alarms may occur during the test. This invention provides a hybrid vehicle new vehicle roll-off testing method that can improve the above-mentioned problems. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a method for testing new hybrid vehicles to reduce false alarms.

[0005] Firstly, this application provides a method for testing a new hybrid vehicle before it rolls off the production line, including:

[0006] Simultaneously receive the fuel replenishment activation signal and the fuel detection deactivation signal, and wait for the second preset duration;

[0007] During the second preset duration, the engine is kept running in the first operating condition;

[0008] Wherein: the first operating condition includes at least: engine speed greater than or equal to a first preset threshold; engine output torque greater than or equal to a second preset threshold.

[0009] According to the technical solution provided in the embodiments of this application, before simultaneously receiving the fuel replenishment activation signal and the fuel detection deactivation signal, the method further includes:

[0010] After receiving the fuel replenishment shutdown signal, wait for the first preset time.

[0011] After waiting for the first preset time, receive the fuel detection start signal and wait for the first preset time.

[0012] According to the technical solution provided in the embodiments of this application, the step of receiving the fuel replenishment shutdown signal further includes:

[0013] At least one set of tooth signal deviation learning, each set of tooth signal deviation learning steps including:

[0014] Receive the engine's first preset power operation signal and maintain it for a first preset duration;

[0015] After waiting for the first preset duration, receive the engine's second preset power operation signal and continue for the first preset duration.

[0016] According to the technical solution provided in the embodiments of this application, after maintaining the engine in the first operating condition for the second preset time period, the method further includes:

[0017] After receiving the fuel replenishment shutdown signal, wait for the first preset time.

[0018] After waiting for the first preset time, receive the fuel detection start signal and wait for the third preset time.

[0019] Within a third preset time period, a first idle speed test signal is received, and the engine is driven into a first idle speed test state.

[0020] According to the technical solution provided in the embodiments of this application, after receiving the first idle speed test signal and driving the engine to the first idle speed test state within the third preset time period, the method further includes:

[0021] Upon receiving a second idle speed test signal, the engine is driven into a second idle speed test state for a third preset duration.

[0022] After the third preset time, receive the fuel detection shutdown signal and wait for the first preset time.

[0023] According to the technical solution provided in the embodiments of this application, the process before tooth signal deviation learning further includes:

[0024] After receiving the fuel replenishment activation signal, wait for the fourth preset time.

[0025] After the fourth preset duration, at least one set of tooth signal deviation learning is performed.

[0026] According to the technical solution provided in the embodiments of this application, the step of maintaining the engine in the first operating condition during the second preset time period further includes:

[0027] Real-time acquisition of vacuum level and pressure change values ​​in the desorption pipeline;

[0028] If any vacuum value is greater than a first preset threshold and any pressure change value is less than a second preset threshold, a first alarm signal is issued.

[0029] Secondly, this application provides a hybrid vehicle new car off-line testing device, comprising:

[0030] A signal receiving module, configured to simultaneously receive a fuel replenishment activation signal and a fuel detection deactivation signal;

[0031] An engine operating condition command module, the command module being configured to keep the engine operating in a first operating condition.

[0032] Thirdly, this application provides a server, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the steps of the hybrid vehicle new car off-line testing method described in any of the above claims.

[0033] Fourthly, this application provides a computer-readable storage medium having a computer program, which, when executed by a processor, implements the steps of the hybrid vehicle new car off-line testing method described in any of the preceding claims.

[0034] In summary, this technical solution specifically discloses a method for testing new hybrid vehicles before they roll off the production line. It adds a high-load desorption condition pre-detection step to the existing engine combustion and evaporation system aging test. The specific steps of the high-load desorption pipeline operation include: simultaneously receiving a fuel replenishment activation signal and a fuel detection deactivation signal, and waiting for a second preset duration; within the second preset duration, maintaining the engine in a first operating condition; wherein the first operating condition includes at least: engine speed greater than or equal to a first preset threshold, and engine output torque greater than or equal to a second preset threshold.

[0035] This application utilizes a newly developed high-load test condition for the desorption pipeline within the Engine Management System (EMS), which is then added to the existing end-of-life (EOL) testing process for automobiles. Specifically, this newly added high-load test condition for the desorption pipeline, upon receiving a fuel filler activation signal and a fuel detection deactivation signal, causes the engine to operate in its first condition, simulating a scenario where the vehicle is under high-load desorption conditions. In other words, the high-load desorption condition is pre-executed during the end-of-life testing process, thereby reducing the probability of false alarms and vehicle interception due to excessive pressure in the desorption pipeline caused by untimely desorption of fuel vapor during the entire EOL test. This avoids repeated testing due to false alarms, reduces the workload of testing personnel, and improves work efficiency to some extent. Attached Figure Description

[0036] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0037] Figure 1 This is a flowchart illustrating a method for testing new hybrid vehicles before they roll off the production line.

[0038] Figure 2 This is a schematic diagram of a hybrid vehicle new car rolling off the production line testing device.

[0039] Figure 3 This is a control diagram of a method for testing a new hybrid vehicle before it rolls off the production line.

[0040] Figure 4 This is a schematic diagram of the test process for a new hybrid vehicle production line test method.

[0041] Figure 5 This is a schematic diagram of a server-side principle.

[0042] The following numbers are labeled in the diagram: 501, CPU; 502, ROM; 503, RAM; 504, Bus; 505, I / O interface; 506, Input section; 507, Output section; 508, Storage section; 509, Communication section; 510, Driver; 511, Removable media. Detailed Implementation

[0043] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] Example 1

[0046] Please refer to Figure 1 The flowchart shown illustrates a first embodiment of a hybrid vehicle new car off-line testing method. This method is applicable to situations where false alarms frequently occur during new car off-line testing and is executed by the engine management system. Combined with... Figure 1 The method includes the following steps:

[0047] S100: Simultaneously receives the fuel replenishment start signal and the fuel detection stop signal, and waits for the second preset time;

[0048] S200: Keep the engine running in the first operating condition for the second preset duration;

[0049] Wherein: the first operating condition includes at least: engine speed greater than or equal to a first preset threshold; engine output torque greater than or equal to a second preset threshold; optionally, the first preset threshold is 2800 rpm, the second preset threshold is 119.4 Nm; the second duration is 60 seconds;

[0050] Specifically, the in-vehicle infotainment (IVI) system triggers an aging test and simultaneously sends a fuel replenishment activation signal and a fuel detection deactivation signal. These signals are then transmitted via the Controller Area Network (CAN). The trigger signal program controls the signal at approximately 100 ms intervals. The vehicle control unit (VCU) identifies the signal and assigns operating conditions, triggering within 200 ms. After the EMS responds to the signal, a high-load desorption test is performed. After the high-load desorption test is completed, the desorption pipeline is flushed under high load. The function then exits and receives a fuel replenishment deactivation signal or the vehicle is powered off before proceeding with the next vehicle road test.

[0051] The high-load desorption pipeline system is explained below: For gasoline vehicles, the carbon canister and its desorption pipeline are significant sources of volatile organic compounds (VOCs), contributing to environmental pollution. Currently, most automobiles use activated carbon canisters to absorb fuel vapors generated during operation. Specifically, the fuel evaporation system contains two desorption pipelines: a high-load pipeline and a low-load pipeline. When the intake manifold pressure is lower than atmospheric pressure, fuel vapors flow from the evaporation system through the carbon canister cleaning solenoid valve, through the low-load desorption pipeline, and into the intake manifold. When the intake manifold pressure is higher than atmospheric pressure, fuel vapors flow from the evaporation system through the carbon canister cleaning solenoid valve, through the high-load desorption pipeline, are drawn into the intake air filter by the venturi tube, and then enter the intake manifold through the intercooler.

[0052] Specifically, before step S100: simultaneously receiving the fuel replenishment activation signal and the fuel detection deactivation signal, the method further includes:

[0053] Step 1: After receiving the fuel replenishment shutdown signal, wait for the first preset time.

[0054] Step 2: After waiting for the first preset time, receive the fuel detection start signal and wait for the first preset time; optionally, the first preset time is 10 seconds.

[0055] The purpose of steps one and two is as follows: Since the fuel replenishment signal was on in the previous step, it is necessary to first turn off the fuel replenishment signal before receiving the fuel detection on signal. This also lays the groundwork for receiving the fuel replenishment on signal and the fuel detection off signal. The first preset waiting time is to ensure the stability of the received signal.

[0056] Specifically, before step S200: receiving the fuel replenishment shutdown signal, the following is also included:

[0057] At least one set of dental error learning, the steps for each set of dental error learning include:

[0058] Step 1: Receive the engine's first preset power operating signal and maintain it for a first preset duration;

[0059] Step 2: After waiting for the first preset time, receive the engine's second preset power operation signal and continue for the first preset time; optionally, the first preset power is 5kw, 1000 rpm; the second preset power is 10kw, 1500 rpm.

[0060] Furthermore, "gear information learning" can be understood as follows: the vehicle has a crankshaft position sensor, which collects the 58-tooth signal of the flywheel to determine the top dead center ignition timing (reference signal) of each cylinder. Therefore, if this sensor is replaced, the reference will be lost, and gear information deviation learning will be performed to ensure gear alignment. Here, "gear information" refers to the communication of gear position information output by the transmission computer.

[0061] Combining steps one and two above, the gear deviation learning test for the vehicle is completed. Specifically, the crankshaft position signal is a crucial control basis for the electronically controlled engine. However, due to deviations in gear machining and crankshaft position sensor installation, differences in crankshaft position signals occur between different engines. Furthermore, replacing this sensor can lead to a loss of reference. Gear deviation learning can calibrate these differences, ensuring gear alignment and preventing torque deviation. Accordingly, the specific steps include: continuously switching the engine between medium and low power levels via the vehicle controller or engine management system, thereby controlling engine speed increases and decreases to meet the gear deviation learning conditions and complete the gear deviation self-learning process.

[0062] Specifically, in step S101: after maintaining the engine in the first operating condition for the second preset duration, the following is also included:

[0063] Step 1: After receiving the fuel replenishment shutdown signal, wait for the first preset time.

[0064] Step 2: After waiting for the first preset time, receive the fuel detection start signal and wait for the third preset time; optionally, the third preset time is 30 seconds.

[0065] Step 3: Within the third preset time period, receive the first idle speed test signal and drive the engine to the first idle speed test state; optionally, the first idle speed test state corresponds to an engine idle speed of 2500 rpm.

[0066] Specifically, after receiving the first idle speed test signal and driving the engine into the first idle speed test state within step three and the third preset time period, the process further includes:

[0067] Receive the second idle speed test signal and drive the engine to be in the second idle speed test state for a third preset duration; optionally, the second idle speed test state corresponds to the engine idle speed reaching 800 rpm.

[0068] Combining steps one through three, complete the dual-idle condition test of the vehicle. Specifically, dual-idle refers to the test of the vehicle at high idle speed and low idle speed. It is mainly an experimental method for road testing of vehicle exhaust emissions, which examines the emissions of engine pollutants at idle speed (throttle fully off) and at both high and low idle speeds.

[0069] This application receives fuel detection signals and performs dual idle condition test simulations to activate the corresponding fuel detection system to detect vehicle emissions. Optionally, the fuel detection system can use a mature exhaust gas analyzer and adopt OBD interface technology. It is an exhaust emission detection system that integrates exhaust gas analysis, result output, and data statistics. It is mainly used in automobile production testing lines, large testing stations, and other occasions. It is suitable for checking the exhaust emission indicators of all light vehicles, so that the vehicle emissions meet the standards and specifications to satisfy the national requirements for vehicles exempt from inspection.

[0070] After the third preset time, receive the fuel detection shutdown signal and wait for the first preset time.

[0071] Specifically, the process before learning the tooth signal deviation also includes:

[0072] After receiving the fuel replenishment activation signal, wait for a fourth preset duration; optionally, the first preset duration is 180 seconds.

[0073] After the fourth preset duration, at least one set of tooth signal deviation learning is performed.

[0074] Upon receiving the fuel replenishment activation signal, the system will simulate the vehicle's catalytic converter (including warm-up) heating conditions to ensure the catalytic converter functions properly.

[0075] Specifically, maintaining the engine in the first operating condition during the second preset duration also includes:

[0076] Real-time acquisition of vacuum level and pressure change values ​​in the desorption pipeline;

[0077] If any vacuum value is greater than a first preset threshold and any pressure change value is less than a second preset threshold, a first alarm signal is issued; the first preset threshold is 9 kPa; the second preset threshold is 500 Pa.

[0078] Specifically, based on the above-mentioned testing process, this application establishes a monitoring system for boost pressure and vacuum in the high-load desorption pipeline, and monitors the pressure change and vacuum in the desorption pipeline in real time. This ensures that when the vapor pressure in the system pipeline is too high, the system will issue an alarm signal to indicate a system malfunction, which will facilitate technicians to inspect the fuel system.

[0079] In summary, such as Figure 3 and Figure 4 As shown, before a new car rolls off the production line, an aging test is required to ensure the normal operation of the entire fuel evaporation system. This aging test includes catalytic converter heating conditions, engine gear deviation self-learning, dual idle speed test conditions, etc. However, due to the limited number of engine operating conditions in new cars, the fuel vapor pressure generated during testing or driving cannot be desorbed in time, leading to increased fuel tank pressure and easily triggering false alarm signals, resulting in vehicle interception. Therefore, a high-load pre-diagnostic condition for the desorption pipeline is added to the existing EOL aging test process. This high-load desorption condition is pre-executed to desorb the fuel vapor pressure, and a formal diagnosis is then performed during the subsequent dynamic road test. This can reduce the occurrence of false alarms during the entire EOL test that lead to vehicle interception, avoid repeatedly increasing the workload of testing personnel, and improve work efficiency to a certain extent.

[0080] Example 2

[0081] like Figure 2 As shown, a hybrid vehicle new car off-line testing device includes:

[0082] The signal receiving module is configured to simultaneously receive the fuel replenishment activation signal and the fuel detection deactivation signal.

[0083] Engine operating condition command module, the command module is configured to keep the engine operating in the first operating condition.

[0084] In addition, the hybrid vehicle new car off-line testing device also includes an engine operating condition detection module, which is configured to detect the stress of the entire testing process.

[0085] Furthermore, the signal receiving module is specifically used to trigger the aging test of the in-vehicle infotainment system and simultaneously send the fuel replenishment start signal and the fuel detection stop signal. The signal is then transmitted through the controller local area network signal. The trigger signal program controls an interval of about 100 ms. The vehicle controller receives the signal, identifies it and allocates the corresponding operating conditions. It is triggered within 200 ms. After receiving the operating condition allocation signal sent by the vehicle controller, the engine management system performs a high-load desorption detection condition.

[0086] The engine operating condition command module is specifically used to drive the engine to run after the engine management system receives the operating condition allocation signal from the vehicle controller.

[0087] The engine condition monitoring module is specifically used to monitor the entire test. When the vacuum level in the desorption line is greater than 9 kPa and the pressure change in the desorption line is less than 500 Pa, a high desorption line fault will be triggered.

[0088] Example 3

[0089] A server includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of a hybrid vehicle new car off-line testing method as described in Embodiment 1.

[0090] In this embodiment, as Figure 5 As shown, the computer system includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes based on programs stored in read-only memory (ROM) 502 or programs loaded from storage into random access memory (RAM) 503. RAM 503 also stores various programs and data required for system operation. CPU 501, ROM 502, and RAM 503 are interconnected via bus 504. Input / output (I / O) interface 505 is also connected to bus 504.

[0091] The following components are connected to I / O interface 505: an input section 506 including a keyboard, mouse, etc.; an output section including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN card, modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive is also connected to I / O interface 505 as needed. A removable medium 511, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 510 as needed so that computer programs read from it can be installed into storage section 508 as needed.

[0092] In particular, according to embodiments of the present invention, the above-described reference process Figure 1 The described process can be implemented as a computer software program. For example, Embodiment 3 of the present invention includes a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication component, and / or installed from a removable medium. When the computer program is executed by the central processing unit (CPU) 501, it performs the functions defined in the system of this application.

[0093] It should be noted that the computer-readable medium shown in this invention can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this invention, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0094] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0095] The units described in the embodiments of the present invention can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself. The described units or modules can also be located in a processor; for example, a processor can be described as including a first generation module, an acquisition module, a search module, a second generation module, and a merging module. The names of these units or modules do not necessarily limit the specific unit or module itself; for example, the acquisition module can also be described as "an acquisition module for acquiring multiple instances to be probed in the base table".

[0096] In another aspect, this application also provides a computer-readable medium, which may be included in the electronic device described in the above embodiments; or it may exist independently and not assembled into the electronic device. The computer-readable medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to implement a hybrid vehicle new car off-line testing method as described in the above embodiments.

[0097] The units described in the embodiments of the present invention can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself. The described units or modules can also be located in a processor; for example, a processor can be described as including a first generation module, an acquisition module, a search module, a second generation module, and a merging module. The names of these units or modules do not necessarily limit the specific unit or module itself; for example, the acquisition module can also be described as "an acquisition module for acquiring multiple instances to be probed in the base table".

[0098] In another aspect, this application also provides a computer-readable medium, which may be included in the electronic device described in the above embodiments; or it may exist independently and not assembled into the electronic device. The computer-readable medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to implement a hybrid vehicle new car off-line testing method as described in the above embodiments.

[0099] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A method for testing new hybrid vehicles before they roll off the production line, characterized in that, include: Simultaneously receive the fuel replenishment activation signal and the fuel detection deactivation signal, and wait for the second preset duration; During the second preset duration, the engine is kept running in the first operating condition; Wherein: the first operating condition includes at least: engine speed greater than or equal to a first preset threshold; engine output torque greater than or equal to a second preset threshold.

2. The method for testing a new hybrid vehicle off the production line according to claim 1, characterized in that, Before simultaneously receiving the fuel replenishment activation signal and the fuel detection deactivation signal, the process also includes: After receiving the fuel replenishment shutdown signal, wait for the first preset time. After waiting for the first preset time, receive the fuel detection start signal and wait for the first preset time.

3. The method for testing a new hybrid vehicle off the production line according to claim 2, characterized in that, Before receiving the fuel replenishment shutdown signal, the process also includes: At least one set of tooth signal deviation learning, each set of tooth signal deviation learning steps including: Receive the engine's first preset power operation signal and maintain it for a first preset duration; After waiting for the first preset duration, receive the engine's second preset power operation signal and continue for the first preset duration.

4. The method for testing a new hybrid vehicle off the production line according to claim 1, characterized in that, After maintaining the engine at the first operating condition for the second preset time period, the process further includes: After receiving the fuel replenishment shutdown signal, wait for the first preset time. After waiting for the first preset time, receive the fuel detection start signal and wait for the third preset time. Within a third preset time period, a first idle speed test signal is received, and the engine is driven into a first idle speed test state.

5. The hybrid vehicle new car off-line testing method according to claim 4, characterized in that: After receiving the first idle speed test signal and driving the engine into the first idle speed test state within the third preset time period, the process further includes: Upon receiving a second idle speed test signal, the engine is driven into a second idle speed test state for a third preset duration. After the third preset time, receive the fuel detection shutdown signal and wait for the first preset time.

6. The hybrid vehicle new car off-line testing method according to claim 3, characterized in that: Prior to the tooth signal deviation learning, the following also includes: After receiving the fuel replenishment activation signal, wait for the fourth preset time. After the fourth preset duration, at least one set of tooth signal deviation learning is performed.

7. The hybrid vehicle new car off-line testing method according to any one of claims 1-4, characterized in that: The step of maintaining the engine in the first operating condition during the second preset time period also includes: Real-time acquisition of vacuum level and pressure change values ​​in the desorption pipeline; If any vacuum value is greater than a first preset threshold and any pressure change value is less than a second preset threshold, a first alarm signal is issued.

8. A hybrid vehicle new car off-line testing device, characterized in that, include: A signal receiving module, configured to simultaneously receive a fuel replenishment activation signal and a fuel detection deactivation signal; An engine operating condition command module, the command module being configured to keep the engine operating in a first operating condition.

9. A server, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the hybrid vehicle new car off-line testing method as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the hybrid vehicle new car off-line testing method as described in any one of claims 1 to 7.

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