• 采取进、排气管隔热措施降低进气温度提高进气充量

    Adopt measure to prevent the heat transmit between intake pipe and exhaust pipe, lower the intake air temperature to increase volumetric efficiency.

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  • 通过模拟计算分析了控制阀泄漏开度充量系数影响

    The effects of the clearance between the valve and resonance chamber and the valve opening on charging coefficient are also analyzed by simulation;

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  • 气道设计原则尽可能减少新鲜充量排气口短路损失

    The principle of scavenging port designing is to minimize short circuit losses resulting from the fresh air flowing to the scavenging port.

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  • 压缩增加发动机充量系数增加,燃烧速率加快,热效率提高。

    When compression ratio is increased, the volumetric efficiency is increased, giving a fast burning rate and thus high thermal efficiency and power output.

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  • 本文介绍了节流式系统接管长度汽油机系数扭矩特性影响

    This paper introduces the effect of connecting pipe length of the flow measurement system on volumetric efficiency and torque characteristic of gasoline engines.

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  • 有血减少充量维持足够流流建立大鼠体外循环模型关键

    Blood priming, total priming reduction and enough bypass flow were the key points in establishing the CPB model in rats.

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  • 试验研究了压缩10 7二甲醚均质充量压缩点燃燃烧发动机排放特性

    The emission characteristics of a DME fueled HCCI engine with compression ratio of 10.7 was studied experimentally.

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  • 试验结果表明系统影响进气系数的情况下,柴油机有害气体排放影响显著

    The test results show that, without obvious increase of volumetric efficiency, this system is able to make obvious change to the exhaust gas emission of diesel engine.

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  • 系数表征换气过程进行完善程度一个极为重要参数,是发动机性能的重要指标。

    Volumetric efficiency is a very important parameter to test whether the engine has a good process of air exchange, its also an important guide line to scale the engine performance.

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  • 通过分析进气道进气充量动力学,提出了传统滚流进气道气道组合的进气道结构。

    By analyzing the kinetics of intake air flow from the tumble inlet ports, a composed inlet port configuration with a traditional tumble port and a sub-port was investigated.

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  • 结果表明系统影响进气系数的情况下,可以明显改变柴油机微粒氮化物排放

    The test results showed that, without obvious increase of volumetric efficiency, this system is able to make obviously change to the particulate and NOx emission.

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  • 最后针对WF4C 27 F - E汽油机进行标定试验,获取了充量系数点火提前MAP

    Finally the calibration on a WF4C27F-E gasoline engine is performed, and the MAP graphs of the volumetric efficiency and the spark advance Angle are obtained.

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  • 发动机采用可变气门正时技术可以提高进气使充量系数增加,发动机扭矩功率可以得到进一步提高

    Engine using variable valve timing technology can improve the intake charge, so that coefficient of charge increase, engine torque and power can be further improved.

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  • 研究结果表明:均质压缩着火发动机最佳工作范围发动机转速混合气空气系数负荷密切的关系;

    The results show that the best operating region of HCCI engine is related to the engine load, speed, and the mixture excess air ratio.

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  • 往复式发动机中,除了火花点燃燃烧柴油燃烧的运转方式外还有第3种运转方式,均质燃燃烧(HCCI)。

    Ignited modes of reciprocating internal combustion engine addition to the spark-ignited and compression engine operation, a third option exists that is Homogeneous Charge compression Ignition (HCCI).

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  • 均质压缩点火燃烧(QHCCI)方式占总燃料多数的预混合燃料稀薄燃烧完成,故可能很低排放尤其是氮氧化物。

    Quasi homogeneous charge compression ignition (QHCCI) combustion may be with low emissions, especially for soot and NO_X, according as the most fuel which is pre-mixed is lean burnt.

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  • 根据-服装-环境系统中的传递理论,就华东地区气候特征对羽绒服装最佳问题进行了研究

    Based on the heat transferring theory in the human - clothing - environment system, the heat insulation property of down jackets worn in East China area is mainly dealt with.

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  • 采用分蓄能策略,向蓄能系统氨水溶液过程结实后储存在氨储罐内的氨液以及设备负荷可以大幅减小

    In the partial storage system the ammonia, the quantity of the ammonia after the process of the storage energy and the equipment load reduces.

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  • 压力又是随着筒的蒸汽而增大的。

    The pressure cylinder reservoir is filled with steam and gas cylinder increased.

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  • 利用莫勒图法平衡控制乙炔丙酮允许二者处于安全平衡状态

    The allowable charged amount of acetylene and acetone controlled and balanced by Mollier diagram can make them in safe equilibrium condition.

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  • 不同不同压力下进行实验,实验结果一定温差范围理论分析符合较好。

    The experiments are carried out at different filling ratios and pressures. The theoretical calculations agree with the experimental results in a certain range of temperature differences.

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  • 研究了近共沸混合制冷剂冰箱性能运行参数关系

    The experimental investigation on the relations between near-azeotropic mixture refrigerant quantity and refrigerator performance and operating parameters are presented.

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  • 建立了计算数学模型

    The numerical model of refrigerant charge is built.

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  • 研究结果表明次生断层对馆上段油气聚集作用与对断层的石油密切相关。

    Results show that the injection amount of main fault has influence on the effect of subfault to the accumulation of Upper Guantao Fm.

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  • 为了研究制冷剂小型空气热泵热水器性能影响进行不同实验

    In order to study the effects of refrigerant charge on the performance of a small-sized heat pump water heater, many experiments under different charge were carried out.

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  • 研究吸附不变情况制冷剂(吸附质)制冷性能影响

    The effect of recharge quantity of refrigerant (adsorbate) under the condition of keeping the adsorbent quantity constant on performance of the cooling tube is studied in the paper.

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  • 该机径向推流能力强、高、混合搅拌效果特别适宜曝型氧化沟污水处理工艺

    It's very efficient at propelling water radially, aerating and mixing the water. The invert umbrella aerator is especially suited for surface aeration oxidation ditch process.

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  • 数值研究制冷剂以及蒸发器盘管布置形式对柜内稳态温度分布影响。

    The effects of refrigerant charge and configuration of the evaporator coil on the temperature distribution have been investigated numerically.

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  • 平均作为液体离散化导出解析形式稳定性判据用于讨论弹丸

    The average vortex is used as a discretized variable of the liquid. A stability criterion in analytic form is derived and used to discuss the spinning projectile containing liquid charge.

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  • 控制制粉和吹系统中的含氧在15%以下可以防止煤粉爆炸,降低气氛可以采用惰性气体的办法。

    Keeping the oxygen content of the injection gas below 15%, possibly by introducing some N_2 into the gas medium, will prevent coal explosion.

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