Working state determining method after water entering into engine cylinder

Abstract

The invention provides a working state determining method after water entering into an engine cylinder. The method comprises the steps of firstly, determining whether water entering occurs from an inner state of the cylinder; and secondly, determining whether cylinder scoring occurs according to a cylinder scoring reason. Whether water entering into the cylinder occurs can be determined according to the working state of an engine and the inner state of the cylinder, and furthermore water entering amount of the cylinder is determined so that a car owner has a preliminary judgment on the car and performs a corresponding treating measure, thereby reducing loss of the car owner to a certain extent.

Description

technical field [0001] The invention relates to a method for identifying water inflow to an engine cylinder, belonging to the technical field of engine detection. Background technique [0002] The hazards of engine flooding can be summarized into the following three situations: [0003] One is that the engine was flooded after the vehicle was soaked in water (or called static water intake), but the engine was not started until the vehicle was towed back to the repair shop; It is called dynamic water ingress); the third is that the water ingress in the engine causes the engine to stall, and the owner starts the engine without knowing it and drives for a certain distance. [0004] If the vehicle has only been flooded once (not turned off in water, but soaked in water), and then dragged to the repair shop (the engine has not been started), this will basically not cause major damage to the engine. The job is to clean the accumulated water inside the engine, and at the same tim...

AI Technical Summary

Problems solved by technology

[0006] In the third case, the engine stalled due to water ingress, and the owner started the engine without knowing it (a small amount of water will not prevent the engine from starting) and drove for a certain distance

This is the worst case, the piston and connecting rod of the water inlet cylinder are driven by the crankshaft to compress the water in the cylinder, and the water is basically incompressible, which will inevitably cause the bending of the connecting rod and make the irreversible damage to the engine

[0007] So far, the industry as a whole is still in the initial stage of quantitative research on the driving state of vehicles after water enters the engine cylinder, and there are no exact standards and related theories and formulas to refer to