发动机

The most common engine is the four-stroke piston engine.

最常见的发动机是四冲程活塞式发动机。

Because the two-stroke engine can develop twice the power of the four-stroke engine of the same size.

由于二冲程发动机的两倍，可发展的四个权力同样大小的冲程发动机。

The working cycle of the gas turbine engine is similar to that of the four-stroke piston engine.

燃气涡轮发动机的工作循环类似于4冲程活塞发动机。

Methods of work divided by two-stroke and four-stroke two kinds, general engine four-stroke engine.

按工作方式分有二冲程和四冲程两种，一般发动机为四冲程发动机。

Base on the Fluent software,the time-average N-S equation,RNG k-ε turbulence modeling,P1 radiant modeling and particle track modeling,example for boost motor PQM-1 of Titan 4,by using flow-solid coupling boundary condition,the 2D axial symmetry gaseity fluid modeling and two phase fluid modeling were founded and the influence of coagulate particle to the flame-spread process in large aspect ratio SRM ignition transient were analyzed.

0引言固体火箭发动机点火过程是点火燃气流动与火焰传播相互耦合的过程，即包括点火燃气流动、药柱加热、局部点燃、火焰传播、室压建立等复杂的非定常过程，其中火焰传播在点火瞬态过程中占有重要地位，是发动机点火延迟、压强峰值过高、断续燃烧和熄火的主要因素，因此国内

The propensity of deposit formation on intake valves and combustion chamber of the M111 engine using regular gasoline and gasohol was studied and emissions of regulated pollutants were tested by using AVL DisGas 4000 Light to further investigate the impact of gasoline detergents on vehicle emissions.

在M111发动机台架上研究了普通车用汽油清净剂与车用乙醇汽油（E10）清净剂对进气阀、燃烧室沉积物生成规律的影响，并用AVL DisGas 4000 Light五气分析仪随机检测发动机常规排放物，进一步分析了不同清净剂对发动机排放的影响。

This includes the capability to support a broad engine range of gasoline and diesel engines.

这包括有能力支持的汽油和柴油发动机广泛的发动机系列。

Gasoline engine in the Chinese general agent, has overall responsibility for Kohler engine sales and service.

汽油发动机在中国的总代理，全面负责科勒发动机的销售和服务。

With the filling nitrogen of 0.9 MPa, the maximal pressure ratio reaches 1.21 and the operation frequency is 25 Hz. The ratio of the harmonic wave of the engine was very little and the frequency jumping was not found in present experiments.

在充气压力为0.9MPa的条件下，该热声发动机最大压比可达1.21，远高于驻波型热声发动机，实验结果和理论分析均表明系统的工作频率为25Hz左右，实验装置的谐波比例非常小，且也没发现频率跳变等现象。

Engine and engine component heat ing is important for optimum performance and uptime.

发动机和发动机部件的加热对保证最佳性能和可用时间非常重要。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。