Engine oil pre-lubrication method for high-power diesel engine
A high-power diesel engine and pre-lubrication technology, which is applied in the direction of pressure lubrication of the lubricating pump and control of lubricant pressure, etc., can solve problems such as delayed diesel engine start-up time, and achieve the effect of reducing pre-lubrication time and quick start-up
Active Publication Date: 2017-09-29
DALIAN CRRC DIESEL ENGINE CO LTD +1
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Problems solved by technology
The time-consuming oil pre-lubrication seriously delays the start-up time of the diesel engine
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[0012] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.
[0013] See attached figure 1 , The diesel engine oil system mainly includes front-end oil equipment such as main engine oil pump 6, auxiliary system oil pre-supply oil pump 2, engine oil cooler 7 and engine oil filter 8, and main engine oil passage 12 of the body. An oil storage control valve 9 is arranged between the main machine oil passage 12 ...
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The invention discloses an engine oil pre-lubrication method for a high-power diesel engine. The method includes the following steps that an oil storage control valve is arranged between an engine body main oil duct and a front end engine oil device, and the pressure of engine oil of an inlet of the oil storage control valve is detected; if the pressure of the engine oil of the inlet of the oil storage control valve is larger than a gravity critical value, the oil storage control valve is in the opening state, and the engine oil in an engine oil system can flow normally; and if not, the oil storage control valve keeps the closing state, and the engine oil in the front end engine oil device is prevented from flowing back to an oil bottom shell because of the gravity. After the diesel engine stops every time, because of blocking of the oil storage control valve, the engine oil in the front end engine oil device does not flow to the oil bottom shell because of the gravity of the engine oil. When engine opening pre-lubrication is conducted on the diesel engine again, because the interior of the front end engine oil device is filled with the engine oil, a pre-supply engine oil pump only need to be pumped the needed engine oil flow of the engine body main oil duct, whole lubrication for the diesel engine can be completed, the pre-lubrication time is shortened substantially, and quick engine starting is achieved.
Description
technical field [0001] The invention relates to the technical field of diesel engines, in particular to a high-power diesel engine oil pre-lubrication method. Background technique [0002] When the high-power diesel engine is directly cold-started, if the kinematic pairs of the diesel engine work in the state of lack of oil or less oil, the friction loss of each kinematic pair will increase, and the temperature will rise sharply, causing irreparable losses such as lava. Therefore, before the cold start of the diesel engine, the diesel engine must be pre-lubricated. One of the methods in the prior art is to provide an independently working pre-supply oil pump. Before starting the diesel engine, the pre-supply oil pump is used to fill the diesel engine oil system with oil to complete the pre-lubrication of the diesel engine. When the diesel engine is shut down, the oil in the oil system, including the oil cooler, oil filter and other front-end oil equipment, will flow back in...
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IPC IPC(8): F01M1/02F01M1/16
CPCF01M1/02F01M1/16
Inventor 张允富王凯张常辉张双成刘艳朝赵慧恩
Owner DALIAN CRRC DIESEL ENGINE CO LTD