Theoretical correspondence between classical instability and local solutions of the Schroedinger equation is discussed for Wannier's ionization threshold law.
本田公司应用最新的动力总成技术"地球梦科技",开发了1款3.5 L V6汽油机。该发动机的总体设计目标是降低二氧化碳排放,并向客户提供驾驶乐趣。"地球梦科技"的理念旨在降低排放的同时改善燃油经济性。为达到这一目标...本田公司应用最新的动力总成技术"地球梦科技",开发了1款3.5 L V6汽油机。该发动机的总体设计目标是降低二氧化碳排放,并向客户提供驾驶乐趣。"地球梦科技"的理念旨在降低排放的同时改善燃油经济性。为达到这一目标,并为用户提供驾驶乐趣,采用了三级可变气门正时及升程电控技术和可变气缸管理系统。将这种配气机构技术与缸内直接喷射技术相结合,可提升3.3%的功率,并降低燃油耗20%。为满足中型豪华轿车对噪声及振动水平的要求,开发了新型发动机悬置系统,以改善3缸运行模式的发动机振动。阐述了带可变气缸管理系统及缸内直接喷射系统的三级可变气门正时及升程电控技术、减摩技术,以及新型发动机悬置系统的结构及优势。展开更多
It has been found in our past studies that the installation of asymmetric plate at the inlet of inducer is effective for the suppression of cavitation surge phenomenon.In the present study,the suction performance of 2...It has been found in our past studies that the installation of asymmetric plate at the inlet of inducer is effective for the suppression of cavitation surge phenomenon.In the present study,the suction performance of 2-bladed helical inducer with an inlet asymmetric plate is experimentally investigated.It is observed that the suction performance in large flow rate conditions is not significantly influenced by the asymmetric plate,whereas the head of inducer with the asymmetric plate increases just before the head breakdown in partial flow conditions.To understand the mechanism of this additional head,the flow measurements and the numerical simulations are carried out.It is found that the circumferential component of absolute velocity at the exit of inducer slightly increases with the development of cavitation in both cases with and without the inlet asymmetric plate,indicating the increase of the theoretical head.The theoretical head increase with the inlet asymmetric plate is also confirmed by the unsteady numerical simulations,suggesting that the additional head is achieved through the increase of the theoretical head with the change of the exiting flow from the inducer associated with some amount of cavitation.展开更多
文摘Theoretical correspondence between classical instability and local solutions of the Schroedinger equation is discussed for Wannier's ionization threshold law.
文摘本田公司应用最新的动力总成技术"地球梦科技",开发了1款3.5 L V6汽油机。该发动机的总体设计目标是降低二氧化碳排放,并向客户提供驾驶乐趣。"地球梦科技"的理念旨在降低排放的同时改善燃油经济性。为达到这一目标,并为用户提供驾驶乐趣,采用了三级可变气门正时及升程电控技术和可变气缸管理系统。将这种配气机构技术与缸内直接喷射技术相结合,可提升3.3%的功率,并降低燃油耗20%。为满足中型豪华轿车对噪声及振动水平的要求,开发了新型发动机悬置系统,以改善3缸运行模式的发动机振动。阐述了带可变气缸管理系统及缸内直接喷射系统的三级可变气门正时及升程电控技术、减摩技术,以及新型发动机悬置系统的结构及优势。
文摘It has been found in our past studies that the installation of asymmetric plate at the inlet of inducer is effective for the suppression of cavitation surge phenomenon.In the present study,the suction performance of 2-bladed helical inducer with an inlet asymmetric plate is experimentally investigated.It is observed that the suction performance in large flow rate conditions is not significantly influenced by the asymmetric plate,whereas the head of inducer with the asymmetric plate increases just before the head breakdown in partial flow conditions.To understand the mechanism of this additional head,the flow measurements and the numerical simulations are carried out.It is found that the circumferential component of absolute velocity at the exit of inducer slightly increases with the development of cavitation in both cases with and without the inlet asymmetric plate,indicating the increase of the theoretical head.The theoretical head increase with the inlet asymmetric plate is also confirmed by the unsteady numerical simulations,suggesting that the additional head is achieved through the increase of the theoretical head with the change of the exiting flow from the inducer associated with some amount of cavitation.
