Evaluation method of low-speed pre-ignition formation and inhibition of gasoline engine oil

A gasoline engine oil and evaluation method technology, applied in the direction of internal combustion engine testing, etc., can solve problems such as engine damage, super knocking, etc., and achieve the effects of avoiding component damage, good guidance, and avoiding invalid tests

Active Publication Date: 2022-06-24
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Claims
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Problems solved by technology

Low-speed pre-ignition can cause super knock, causing engine damage

Method used

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  • Evaluation method of low-speed pre-ignition formation and inhibition of gasoline engine oil
  • Evaluation method of low-speed pre-ignition formation and inhibition of gasoline engine oil

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Embodiment Construction

[0036] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is illustrative only, and in no way restricts the disclosure, its application or uses. The present disclosure can be implemented in many different forms and is not limited to the embodiments described here. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that relative arrangements of parts and steps, compositions of materials, numerical expressions and numerical values ​​set forth in these embodiments should be interpreted as illustrative only and not as limiting, unless specifically stated otherwise.

[0037] "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distin...

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Abstract

The invention discloses a method for evaluating the low-speed pre-ignition formation and inhibition of gasoline engine oil, which includes: replacing the engine oil in the engine with engine oil to be evaluated, and assembling equipment for evaluating the formation and inhibition of pre-ignition on the engine; Clean carbon deposition conditions; run oil flushing conditions; run pre-running conditions; increase blow-by in the engine to create conditions for oil to enter the combustion chamber; run low-speed pre-ignition test conditions; run low-speed pre-ignition test conditions , to evaluate the low-speed pre-ignition formation and inhibition of gasoline engine oil. The method for evaluating the formation and inhibition of gasoline engine oil low-speed pre-ignition of the present invention can realize accurate evaluation of engine oil pre-ignition inhibition, effectively confirm the low-speed pre-ignition caused by gasoline engine oil, avoid invalid tests, and avoid different specifications of engine oils. Inaccurate evaluation is conducive to the matching development of engine oil in engine development, and avoids component damage caused by the application of unsuitable specification engine oil to the engine.

Description

technical field [0001] The invention relates to the technical field of low-speed pre-ignition, in particular to a method for evaluating the formation and suppression of low-speed pre-ignition of gasoline engine oil. Background technique [0002] For engines, especially direct injection gasoline engines, under low-speed and high-load conditions, the pre-combustion caused by the self-ignition of the mixture before the ignition of the spark plug is called low-speed pre-ignition. Low-speed pre-ignition can cause super knock, causing engine damage. Factors affecting low-speed pre-ignition include engine design, carbon deposits in the combustion chamber, fuel, engine oil, and distribution of hot spots in the cylinder. Engine oil is one of the influencing factors for pre-ignition. The problem of low-speed pre-ignition of supercharged direct injection engines can be suppressed to a certain extent by improving the formula of the engine oil, such as adjusting the base oil grade, adju...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/04G01M15/05
CPCG01M15/04G01M15/05
Inventor 王兆远钱多德刘团结张应兵叶辉柴洪磊解小超王右李雪
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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