这类系统的电控柱塞式喷油总成如图2a所示,喷油量和转速控制机构如图2b所示。它在传统喷油泵的机械调速器壳体内安装了线性电磁铁以取代机械调速器,在喷油泵凸轮轴的自由端安装了磁电式转速传感器(见图2a),用于检测发动机的转速;并在每个喷油分泵上增设一个可以移动的控制滑套(见图2c),用于调节喷油泵的喷油定时。电控单元根据加速踏板位置、发动机转速、涡轮增压器增压压力、冷却液温度、 The electronically controlled ram injection assembly of this type of system is shown in Figure 2a. The fuel injection and speed control mechanism is shown in Figure 2b. A linear solenoid is installed in the mechanical governor housing of a conventional fuel injection pump to replace the mechanical governor. A magneto-electric speed sensor (see Figure 2a) is mounted on the free end of the fuel pump camshaft to detect the engine’s Speed; and in each injection manifold with a removable control sleeve (see Figure 2c), used to adjust the fuel injection pump timing. Electronic control unit based on accelerator pedal position, engine speed, turbocharger boost pressure, coolant temperature,