How to identify fuel filling errors
A fuel filling and error identification technology, which is applied in combustion engines, fuel injection control, internal combustion piston engines, etc., can solve the problems of unfavorable popularization and application of ordinary dual-fuel vehicles and high cost
Active Publication Date: 2022-06-28
UNITED AUTOMOTIVE ELECTRONICS SYST
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Problems solved by technology
[0004] The purpose of the present invention is to provide a fuel filling error recognition method to solve the problem that the hardware and software of the system need to be changed, resulting in high cost, which is not conducive to the promotion and application of ordinary dual-fuel vehicles
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[0026] The specific embodiments of the present invention will be described in more detail below with reference to the schematic diagrams. The advantages and features of the present invention will become apparent from the following description and claims. It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.
[0027] As described in the background art, the existing methods for identifying fuel filling errors mainly include two types: one is to identify the differences in the hardware of conventional fuel and alcohol fuel tanks through the special design of the fuel tank filling port, and then directly Avoid adding wrong fuel; the other is to install the fuel sensor, through the ECU software to actively identify the type of fuel, and identify whether the wrong fuel is added. The cost of these two systems ...
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The invention provides a fuel filling error identification method, by judging whether fuel is added to the fuel tank, the fuel includes first fuel and second fuel; if fuel is added to the fuel tank, the engine enters the closed-loop control of the oxygen sensor and the mixed gas Self-learning phase: acquiring a self-learning value, and obtaining the ratio of the first fuel to the second fuel according to the self-learning value; and judging whether the fuel is filled incorrectly. The method provided by the present invention only obtains the self-learning value through the closed-loop control of the oxygen sensor controlled by the engine electronic control unit (ECU) and the self-learning stage of the mixture, so as to realize the identification and judgment of the fuel filling error, and does not need the fuel tank system. Retrofitting the refueling port and installing an oil sensor does not involve upgrading the engine electronic control unit system. The system is low in cost and can meet the needs of vehicles for fuel identification, which is conducive to the promotion and application of ordinary dual-fuel vehicles.
Description
technical field [0001] The invention relates to the field of automobile electronic manufacturing, in particular to a method for identifying fuel filling errors. Background technique [0002] There are many types of dual-fuel vehicles, and the current mainstream equipment is: gasoline / natural gas, gasoline / alcohol fuel, diesel / natural gas, diesel / liquefied petroleum gas, etc., among which alcohol fuel usually refers to methanol or ethanol. Dual-fuel vehicles are usually equipped with two sets of fuel supply systems (such as fuel tanks, fuel pumps, fuel rails and injectors, etc.). For dual-fuel vehicles where both fuels are liquid, it is easy for drivers to incorrectly refill fuel, i.e. alcohol Gasoline is added to the fuel tank or alcohol fuel is added to the gasoline tank. After wrongly refilling the fuel, the two fuels in the fuel tank are mixed with each other, and the fuel is no longer 100% gasoline or 100% alcohol fuel. The design logic of gasoline or methanol fuel is ...
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IPC IPC(8): F02D41/22F02D41/14
CPCF02D41/22F02D41/1401F02D2041/224Y02T10/40
Inventor 刘彦双何兵张旭洲刘佳熙程玉佼刘宁唐文超
Owner UNITED AUTOMOTIVE ELECTRONICS SYST