Engine with direct injection and port fuel injection adjustment based upon engine oil parameters

• Main Authors: ALI KHAN, MAQSOOD RIZWAN, CLAYWELL, MARK R, PRYOR, BRYAN K
• Format: Patent
• Language: Chinese; English
• Published: 31.10.2017
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

An internal combustion engine includes an engine structure defining a cylinder having an intake port and an exhaust port. A piston is disposed in the cylinder and is drivingly connected to a crankshaft. A direct injection system injects fuel directly into the cylinder. A port fuel injection system injects fuel into the intake port. An oil temperature sensor and an engine speed sensor are in communication with a controller that controls the direct injection system and the port fuel injection system based on measured oil temperature and engine speed. In particular, the controller employs a control algorithm that alters the direct injection and port fuel injection split based on the measured oil temperature and engine speed. The maximum direct injection pressure reduction is limited by a maximum allowable port fuel injection duty cycle as determined by the controller. 内燃机包括限定具有进气端口和排气端口的汽缸的发动机结构。活塞设置在该汽缸中并且驱动地连接至曲轴。直接喷射系统向汽缸中直接喷射燃料。端口燃料喷射系统向该进气端口中喷射燃料。油温传感器和发动机速度传感器与控制器通信，该控制器基于测量的油温和发动机速度控制该直接喷射系统和该端口燃料喷射系统。具体地