CN-121993301-A - Engine control method and system for hybrid amphibious vehicle

CN121993301ACN 121993301 ACN121993301 ACN 121993301ACN-121993301-A

Abstract

The invention discloses an engine control method and system for a hybrid amphibious vehicle, wherein the method comprises the steps of monitoring an engine control instruction; the method comprises the steps of judging a mode in which a vehicle is located when an engine control instruction is an engine starting instruction, acquiring states of an air inlet closing valve and an air outlet closing valve of the vehicle when the mode in which the vehicle is located is a land driving mode, executing the engine starting instruction when the air inlet closing valve and the air outlet closing valve of the vehicle are both in an open state, and prohibiting engine starting when the air inlet closing valve and/or the air outlet closing valve of the vehicle are in a closed state. When the engine is started, firstly, the mode of the vehicle and the states of the recently closed valve and the exhaust closed valve are judged so as to ensure the safety of the engine starting.

Inventors

DAI LIHONG
LEI JIANG
LI YINGLIANG
WEI HONGXIA
HU CHANGCAI
YANG LUN
TU SHAOPING

Assignees

奇瑞汽车股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260330

Claims (10)

1. An engine control method of a hybrid amphibious vehicle is characterized by comprising the following steps: monitoring an engine control command; When the engine control instruction is an engine starting instruction, judging a mode in which the vehicle is positioned; When the mode of the vehicle is a water navigation mode, the engine is forbidden to start; when the mode of the vehicle is a land driving mode, acquiring states of an air inlet closing valve and an air outlet closing valve of the vehicle; Executing an engine start command when both an intake shut-off valve and an exhaust shut-off valve of the vehicle are in an open state; engine start is prohibited when the vehicle intake shutoff valve and/or exhaust shutoff valve is in a closed state.
2. The engine control method of a hybrid amphibious vehicle of claim 1, wherein the process of executing the engine start command comprises: Controlling the starting of an engine, and obtaining the rotating speed of a generator at a set moment; Judging whether the rotation direction of the engine is correct or not according to the rotation speed value of the generator; When the rotation direction of the engine is correct, controlling the engine to start to a set rotation speed; When the engine rotation direction is incorrect, the engine is controlled to stop starting.
3. The engine control method of a hybrid amphibious vehicle according to claim 2, wherein the acquired generator rotational speed at the set time is smaller than the ignition rotational speed of the engine.
4. The engine control method of a hybrid amphibious vehicle of claim 1, wherein after the engine is started, the generator speed and the power generation command are obtained; judging whether the rotating speed direction of the generator is matched with the generating instruction direction; when there is a mismatch between the two, inhibiting starting the generator to generate electricity; When there is a match, the power generation instruction is executed.
5. The engine control method of a hybrid amphibious vehicle according to claim 1, wherein when the engine control command is an engine stop ignition command, the generator is controlled to output an output torque opposite to the engine rotation direction to an engine rotation speed of 0.
6. The engine control method of a hybrid amphibious vehicle of claim 5, wherein the generator is controlled to stop outputting torque when the engine speed drops to a set speed.
7. An engine control system for a hybrid amphibious vehicle, comprising: The instruction monitoring unit is used for monitoring an engine control instruction; a vehicle mode judging unit for judging the mode of the vehicle when the engine control command is an engine start command; The engine control unit is used for prohibiting engine starting when the mode of the vehicle is a water navigation mode, acquiring the states of an air inlet closing valve and an air outlet closing valve of the vehicle when the mode of the vehicle is a land traveling mode, executing an engine starting instruction when the air inlet closing valve and the air outlet closing valve of the vehicle are in an open state, and prohibiting engine starting when the air inlet closing valve and/or the air outlet closing valve of the vehicle are in a closed state.
8. An electronic device, the device comprising: A processor adapted to execute a computer program; A computer-readable storage medium having a computer program stored therein, which when executed by the processor, implements a method of controlling an engine of a hybrid amphibious vehicle as claimed in any one of claims 1 to 6.
9. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program adapted to be loaded by a processor and to perform a method of controlling an engine of a hybrid amphibious vehicle according to any one of claims 1-6.
10. A computer program product, characterized in that the computer program product comprises a computer program which, when executed by a processor, implements a method for controlling an engine of a hybrid amphibious vehicle as claimed in any one of claims 1-6.

Description

Engine control method and system for hybrid amphibious vehicle Technical Field The invention relates to the technical field of vehicle control, in particular to an engine control method and system of a hybrid amphibious vehicle. Background The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. Amphibious vehicle is a new type of traffic tool capable of running on water and land, and has both the land performance of car and the water driving performance of ship. In order to improve the endurance mileage of the amphibious vehicle, a range-extending engine is adopted to provide power energy for the amphibious vehicle. In the related art, when the range-extended engine is used for engine starting control, the engine is started directly according to a starting instruction of the engine, and when the amphibious vehicle is in a water surface navigation mode, the engine is started according to the starting instruction of the engine, so that water inflow of the engine is easy to be damaged. Disclosure of Invention In order to solve the problems, the invention provides an engine control method and system of a hybrid amphibious vehicle, and when the engine is started, firstly, the mode of the vehicle and the states of an air inlet closing valve and an air outlet closing valve are judged so as to ensure the safety of the engine starting. In order to achieve the above purpose, the invention adopts the following technical scheme: In a first aspect, an engine control method for a hybrid amphibious vehicle is provided, including: monitoring an engine control command; When the engine control instruction is an engine starting instruction, judging a mode in which the vehicle is positioned; When the mode of the vehicle is a water navigation mode, the engine is forbidden to start; when the mode of the vehicle is a land driving mode, acquiring states of an air inlet closing valve and an air outlet closing valve of the vehicle; Executing an engine start command when both an intake shut-off valve and an exhaust shut-off valve of the vehicle are in an open state; engine start is prohibited when the vehicle intake shutoff valve and/or exhaust shutoff valve is in a closed state. Further, the process of executing the engine start command includes: Controlling the starting of an engine, and obtaining the rotating speed of a generator at a set moment; Judging whether the rotation direction of the engine is correct or not according to the rotation speed value of the generator; When the rotation direction of the engine is correct, controlling the engine to start to a set rotation speed; When the engine rotation direction is incorrect, the engine is controlled to stop starting. Further, the acquired generator rotation speed at the set time is smaller than the ignition rotation speed of the engine. Further, after the engine is started, the rotating speed of the generator and a generating instruction are obtained; judging whether the rotating speed direction of the generator is matched with the generating instruction direction; when there is a mismatch between the two, inhibiting starting the generator to generate electricity; When there is a match, the power generation instruction is executed. Further, when the engine control command is an engine stop ignition command, the generator is controlled to output an output torque opposite to the engine rotation direction to an engine rotation speed of 0. Further, when the engine speed is reduced to the set rotational speed, the generator is controlled to stop outputting torque. In a second aspect, an engine control system of a hybrid amphibious vehicle is provided, including: The instruction monitoring unit is used for monitoring an engine control instruction; a vehicle mode judging unit for judging the mode of the vehicle when the engine control command is an engine start command; The engine control unit is used for prohibiting engine starting when the mode of the vehicle is a water navigation mode, acquiring the states of an air inlet closing valve and an air outlet closing valve of the vehicle when the mode of the vehicle is a land traveling mode, executing an engine starting instruction when the air inlet closing valve and the air outlet closing valve of the vehicle are in an open state, and prohibiting engine starting when the air inlet closing valve and/or the air outlet closing valve of the vehicle are in a closed state. In a third aspect, a computer device is presented, the device comprising: A processor adapted to execute a computer program; A computer readable storage medium, in which a computer program is stored, which when executed by the processor, implements a method for controlling an engine of a hybrid amphibious vehicle according to the first aspect. In a fourth aspect, a computer readable storage medium is provided, the computer readable storage medium storing a computer program adapted