Fuel oil filling error identification method
A technology for fuel filling and error identification, which is applied to combustion engines, fuel injection control, internal combustion piston engines, etc., and can solve the problems of high cost and unfavorable popularization and application of ordinary dual-fuel vehicles
Active Publication Date: 2020-03-20
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 implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0027] As described in the background technology, the existing fuel filling error identification methods mainly include two types: one is to identify the difference between conventional fuel and alcohol fuel tank hardware through the special design of the fuel tank filling port, and directly Avoid adding wrong fuel; the other is to install an oil sensor and actively identify the type of fuel through the ECU software to identify whether the fuel has been incorrectly filled. The cost required by these two method s...
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The invention provides a fuel oil filling error identification method. The fuel oil filling error identification method comprises the steps that whether fuel oil is added into an oil tank or not is judged, wherein the fuel oil comprises first fuel oil and second fuel oil; if the fuel oil is added into the oil tank, an engine enters into oxygen sensor closed-loop control and mixed gas self-learningstages; a self-learning value is obtained, and the proportion of the first fuel oil to the second fuel oil is obtained according to the self-learning value; and whether a fuel oil filling error occurs or not is judged. According to the provided method, the self-learning value is obtained only through the oxygen sensor closed-loop control and mixed gas self-learning stages controlled by an electronic control unit (ECU) of the engine, so that the fuel oil filling error is identified and judged, an oil filling opening of an oil tank system does not need to be modified, an oil product sensor doesnot need to be mounted, upgrading of an engine ECU system is not involved either, the system is low in cost and can meet the demand of vehicles for fuel oil identification, and application and popularization in ordinary dual-fuel vehicles are facilitated.
Description
technical field [0001] The invention relates to the field of automotive electronics manufacturing, in particular to a fuel filling error identification method. Background technique [0002] There are many types of dual-fuel vehicles, and the current mainstream configurations are: gasoline / natural gas, gasoline / alcohol fuel, diesel / natural gas, diesel / liquefied petroleum gas, etc. 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 fuel injectors, etc.). The fuel tank is filled with gasoline or the gasoline tank is filled with alcohol fuel. After the wrong fuel is filled, the two fuels in the fuel tank are mixed with each other, and the fuel product is no longer 100% gasoline or 100% alcohol fuel. The design logic of gasoline or methanol fuel is used for calculation, and the impact is that there is a large deviation in the fuel injection volume, whic...
Claims
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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