EGR MIXING AND ADJUSTING APPARATUS AND INTERNAL COMBUSTION ENGINE

An EGR mixing and adjusting apparatus and an internal combustion engine comprising the EGR mixing and adjusting apparatus. The EGR mixing and adjusting apparatus comprises an EGR tube (1) internally provided with an EGR mixing chamber (5). An exhaust gas inlet (2) communicating with the EGR mixing chamber (5) is provided at a side wall of the EGR tube (1). A gas guide sliding block (3) is provided within the EGR tube (1) and slides axially therein to block or open the exhaust gas inlet (2). The EGR mixing and adjusting apparatus also comprises a driving device (4) to drive the gas guide sliding block (3) to slide to a predetermined open position. The EGR tube (1) uses the exhaust gas inlet (2) to guide exhaust gas into the EGR mixing chamber (5) and mixes the exhaust gas with fresh air inside the EGR tube (1). The gas guide sliding block (3) slides axially in the EGR tube (1) to block or open the exhaust gas inlet (2). The driving device (4) adjusts the position of the gas guide sliding block (3) to control the extent of opening of the exhaust gas inlet (2). Mixing of the exhaust gas and fresh air is integrated into the EGR tube (1), thereby achieving adjustment of the exhaust gas, simplifying the structure and optimizing the construction of an EGR valve.