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高功率涡轮增压柴油机需要一个装有高压比、宽流量、不喘振的高效率压气机的有效进气系统,同样,也需要有可变截面喷咀的高效率涡轮,以便在发动机低转速和小空气流量运转时,涡轮保持高转速。 为了满足上述要求,美国陆军坦克机动车辆研究发展局制订了一项研制涡轮增压器的规划,其中规定涡轮增压器采用后弯叶轮的离心式压气机和径流式涡轮。为了控制喘振,压气机采用楔形可转动叶片扩压器;为了控制涡轮进气面积,径流式涡轮采用可转动喷咀叶片。 涡轮增压器经过几次反复设计和台架试验后,又同发动机一起进行了广泛的试验。通过试验证实,采用这种涡轮增压器能使柴油机性能得到相当大的改善。
High-power turbocharged diesel engines require an efficient intake system with a high-efficiency, high-pressure, wide-flow, non-surge efficient compressor. Likewise, high-efficiency turbines with variable-section nozzles are also required to operate at low engine speeds Turbine maintains high speed with small airflow. In order to meet the above requirements, the United States Army Tank Vehicle Research and Development Agency has developed a plan for the development of turbochargers, which provides turbochargers with back-curved impellers centrifugal compressors and radial turbines. In order to control the surge, the compressor uses a wedge-shaped rotatable vane diffuser; in order to control the turbine intake area, the radial turbine uses a rotatable nozzle vane. Turbocharger after several repeated design and bench test, but also with the engine carried out a wide range of tests. The test confirmed that using this turbocharger can make a considerable improvement in diesel engine performance.