Engine anti-water detection device and detection method

Abstract

The invention discloses an engine waterproof detection device and detection method. The engine waterproof detection device comprises a first stage sensor group, a second stage sensor and a third stage sensor, wherein the first stage sensor group comprises at least three sensors; two sensors of the first stage sensor group are mounted on two fog lamp decoration panels of a bumper, another one is arranged on a middle net below a front bumper, and the heights of all the sensors in the first stage sensor group are same; the second stage sensor is arranged in the position at 5 centimeters deep from a front air inlet of a water tank framework; the third stage sensor is arranged between the front section of a throttle valve of an engine and an air filter cartridge or a turbo charger; the first stage sensor group, the second stage sensor and the third stage sensor are connected with an ECU and controlled by the ECU and at a certain height from the ground so as to prevent mud from splashing in a driving process and avoid invalidation, and the installation positions of the sensors are at certain distances from the paint surface on a vehicle body so as to avoid invalidation caused by the fact that the sensors are covered with paint during painting.

Description

technical field [0001] The invention relates to an engine water ingress prevention detection device and a detection method. Background technique [0002] At present, the technology of rain sensor and water level sensor is relatively mature. The self-check of the system without starting, the water level display outside the instrument, the program instruction of engine oil and power cut, and the computer control key ignition coil power cut program have been widely used in the anti-theft system. For emergencies such as when the vehicle is driving on a road with a high water level in rainy days, when the water level is higher than the engine inlet before starting, or when the vehicle falls into the water, etc., the engine anti-water ingress system is designed to prevent the engine from running normally or being started due to external factors. The throttle (throttle) sucks in a certain amount of water. When the water enters a certain cylinder in the compression stroke, since the...

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Problems solved by technology

For emergencies such as when the vehicle is driving on a road with a high water level in rainy days, when the water level is higher than the engine inlet before starting, or when the vehicle falls into the water, etc., the engine anti-water ingress system is designed to prevent the engine from running normally or being started due to external factors. The throttle (throttle) sucks in a certain amount of water. When the water enters a certain cylinder in the compression stroke, since the water cannot be compressed like air, the huge resistance of the water-intake cylinder will be compared with the inertial force of the engine and the powerful torque generated by the work. A strong reaction force is generated, causing the engine crankshaft and piston connecting rod to break or bend, resulting in permanent damage

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