CVVL control system

Abstract

The invention discloses a CVVL control system which comprises an MCU used as the control core of the CVVL control system, a power source module, an EEPROM module, a BLDC motor driving module, an H bridge driving module, a CAN communication module, an emergency communication module, an analog signal input module and a frequency signal input module. The CVVL control system can achieve continuous adjustment of the lift within 0-9 mm, has the diagnostic functions for earthing short circuit of a power supply, interphase short circuit, open circuit, the logic fault, over-temperature and the like through driving pole output, and can remarkably lower oil consumption and improve the power performance.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a CVVL (variable valve lift) controller control system for automobile engine valves. Background technique [0002] The throttle valve is a controllable valve used to control the air entering the engine. After entering the intake pipe, it is mixed with gasoline (different styles of cars have different design mixing parts) to become a combustible mixed gas, which participates in combustion and works. It is the engine system of today's EFI cars. The most important parts, its upper part is the air filter and the lower part is the engine block. [0003] The pumping loss caused by throttle throttling of gasoline engine is one of the main factors that make its fuel economy significantly worse than that of diesel engine at part load. Continuously variable valve lift (CVVL) technology plays the same role in adjusting the cylinder charge as the throttle valve by controlling the intake valve lif...

AI Technical Summary

Problems solved by technology

However, there are still many defects in the existing engine valve lift control technology, and the fuel saving effect is not obvious

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