TDLAS (tunable diode laser absorption spectroscopy)-based intelligent laser ignition device and TDLAS-based intelligent laser ignition method

Abstract

The invention discloses a TDLAS (tunable diode laser absorption spectroscopy)-based intelligent laser ignition device which comprises a laser ignition device, a TDLAS detecting device and an electronic control device. The laser ignition device is used for transmitting pulse laser to break down oil and gas mixtures in a combustion chamber of an internal combustion engine so as to realize an ignition effect; the TDLAS detecting device is used for detecting combustion products in real time and inputting detection signals into the electronic control unit, and the combustion products are generated after the laser ignition effect is realized; the electronic control unit is used for analyzing the detection signals and generating ignition control signals for controlling the laser ignition device. The invention further discloses a TDLAS-based intelligent laser ignition method. The TDLAS-based intelligent laser ignition method includes detecting the combustion products in real time by the aid of the TDLAS detecting device; adjusting ignition time, a focusing position and ignition energy of next laser ignition according to the detection signals and feedback signals of other sensors or switches; repeatedly carrying out the procedure until a perfect ignition state is approached. The TDLAS-based intelligent laser ignition device and the TDLAS-based intelligent laser ignition method have the advantages that the laser ignition performance and combustion characteristics of the internal combustion engine can be effectively improved by the aid of the TDLAS-based intelligent laser ignition device and the TDLAS-based intelligent laser ignition method, and accordingly purposes of saving energy and reducing emission can be achieved.

Description

technical field [0001] The invention relates to the field of laser ignition of internal combustion engines, in particular to an intelligent laser ignition device and method based on TDLAS. Background technique [0002] Laser ignition technology is a new ignition technology for internal combustion engines. The high-energy pulsed laser is focused on the oil-gas mixture in the combustion chamber. When the energy density at the focus is greater than the ignition threshold of the oil-gas mixture, the oil-gas mixture is broken down by the laser to form plasma, and the ignition process is further realized. [0003] Due to its special ignition mechanism, laser ignition technology has the following advantages compared with traditional spark ignition technology: (1) Laser ignition technology adopts non-contact ignition mode, which can effectively avoid the disadvantages caused by electrode aging, corrosion or carbon deposition. (2) The ignition position of laser ignition technology c...

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Problems solved by technology

However, at present, the measurement of the combustion products of internal combustion engines by TDLAS is mainly used for real-time monitoring of pollutant emissions, and management of vehicle emissions and traffic based on the monitoring results. There is no proposed feedback adjustment based on the detection results of TDLAS for the operation of internal combustion engines. TDLAS There is a broader application prospect in the combustion detection of internal combustion engines

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