公开(公告)号：US3476094A

公开(公告)日：1969-11-04

申请号：US3476094D

申请日：1968-03-13

Applicant: GEN MOTORS CORP

Inventor： RUCINS ERIK H ,  GUERNSEY ROBERT W

IPC: F02P5/10

CPC classification number: F02P5/103

公开(公告)号：US3657881A

公开(公告)日：1972-04-25

申请号：US3657881D

申请日：1969-09-02

Applicant: GEN MOTORS CORP

Inventor： AMANN CHARLES A ,  RUCINS ERIK H

IPC: F02C9/20 ,  F02C9/54 ,  F02C9/56 ,  F02C9/14

CPC classification number: F02C9/54 ,  F02C9/20 ,  F02C9/56 ,  Y10T477/40

Abstract: A vehicle turbine of the gas-coupled type propels the vehicle through a change-speed transmission. To reduce vehicle acceleration time with an acceptable penalty with respect to fuel consumption, the compressor of the engine has variable inlet guide vanes which are shifted into a positive prewhirl angle at idling speeds when the transmission is shifted into a drive condition. Thus the engine gas generator has a low speed idle, with axially oriented guide vanes and normal air entrance, when the transmission is in neutral, and a high speed idle with positive prewhirl when the transmission is in drive condition. Also, the vanes are shifted at full speed of the gas generator to provide negative prewhirl and thus reduce the engine speed corresponding to maximum power output. Because of the higher idle and lower maximum speeds, the acceleration time of the gas generator, and thus of the power turbine, is reduced. Because positive prewhirl reduces compressor pressure ratio at the high speed idle, the power turbine does not have an undue tendency to cause creep of the vehicle in the high speed idle.

Abstract translation: 气体联接式的车辆涡轮通过变速传动推动车辆。 为了以相对于燃料消耗的可接受的惩罚来减少车辆加速时间，发动机的压缩机具有可变的入口导向叶片，当变速器转换到驱动条件时，它们以空转速度偏移到正的预旋转角度。 因此，发动机气体发生器具有低速怠速，当变速器处于空档状态时，具有轴向定向的导向叶片和正常空气入口，以及当变速器处于驱动状态时具有正向预热的高速怠速。 此外，叶片以气体发生器的全速移动以提供负的前翅，并因此降低对应于最大功率输出的发动机转速。 由于较高的怠速和较低的最大速度，所以气体发生器和动力涡轮机的加速时间减小。 因为正偏压在高速怠速时降低了压缩机压力比，所以动力涡轮机不会在高速怠速时引起车辆蠕变的不适当倾向。