Hybrid power vehicle and lubricating and cooling system and method of supercharger

Abstract

The invention discloses a lubricating and cooling system of a supercharger. The lubricating and cooling system comprises a first engine oil pump and further comprises a second engine oil pump, a monitoring device and a control device. The second engine oil pump is connected with the first engine oil pump in parallel. The monitoring device is used for monitoring the temperature signal of engine oil in the supercharger. The control device prestores the engine oil temperature during normal work of the supercharger, and the engine oil temperature during normal work of the supercharger serves as the standard temperature value. When an engine is in a shutdown state and the temperature signal is larger than the standard temperature value, the control device controls the second engine oil pump to be started; and when the engine is in the shutdown state, the second engine oil pump can supply oil to the supercharger, and therefore the supercharger can be cooled, the overheat phenomenon of the supercharger is prevented, and therefore the working reliability of the supercharger is improved, and the service life of the supercharger is prolonged. The invention further discloses a hybrid power vehicle. The invention further discloses a lubricating and cooling method of the supercharger.

Description

technical field [0001] The invention relates to the technical field of vehicle machinery, in particular to a lubrication and cooling system and method for a hybrid vehicle and a supercharger. Background technique [0002] With the country's vigorous promotion of new energy vehicles in recent years, hybrid buses have gradually spread to various large, medium and small cities. Hybrid vehicles, as new energy buses, have strong commercial value and environmental protection significance. At present, the matching engine in the hybrid electric bus system is selected from the existing engines. During the matching process, only the power and economy of the whole vehicle are considered, and no corresponding changes are made to the engine for the specific engine operating conditions of the hybrid electric system. , causing the engine to have a risk of failure during the operation of the hybrid system, and the exhaust gas turbocharger is a component that is prone to failure. [0003] T...

AI Technical Summary

Problems solved by technology

Therefore, the above-mentioned oil pump is driven by the engine and starts when the engine starts. When the engine stops, the oil pump also stops. At this time, the oil pump cannot provide oil for the supercharger.

[0005] For a hybrid vehicle, when it is driving in a crowded commercial area, it will frequently trigger the start-stop mode, and when the engine of the hybrid vehicle is stopped, the vehicle does not stop running, but continues to run driven by electric energy, and When the engine stops, the oil pump stops accordingly, and cannot supply oil to the supercharger. When the engine starts and stops frequently, the intermediate body of the supercharger is overheated due to dry friction, causing the supercharger to leak oil and reduce its work. reliability and service life

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