柴油机车被越来越多的人认为是主要的污染源。
But locomotives are increasingly recognized as a significant source of pollution.
与柴油机车相比，运行成本只有5%，电动车将很快成为一个看上去更可行的选择。
And with running costs as little as 5% those of diesel models, electric cars will soon start to look like a more viable option.
他打消了EPA认为如果车主忘了装满尿素注入系统的话这种柴油机车的污染会加剧的这一顾虑。
He believes, however, that he has satisfied concerns from the EPA that drivers would not bother to top up the urea-injection system, and that the cars would thus pollute more than they should.
梅赛德斯称这种新柴油机车即将投放美国市场，其燃油经济性要比同价位的汽油机车要高20- 40%。
Mercedes claims the new diesel engines it intends to put on the American market will also be 20-40% more economical than their petrol equivalents.
研究小组将高速列车同汽车，火车（美国的全国铁路乘客公司的柴油机车）以及飞机的排放周期进行了比较。
The team compared the lifecycle emissions of high-speed electric rail with transport by car, by heavy rail (the Amtrak diesel system) and by air.
他们发现汽车低速行驶的时候，噪音水平通常超过88分贝，这个数值与柴油机车经过时或是建筑工地的噪音水平相当。
They found that at the lower speed sound levels regularly exceeded 88db, the equivalent of a diesel train passing or a construction site.
大众—这个公司去年在美国销售了30,000辆柴油机车—也表示，如果没有估计错市场增长需求的话，他们意欲把这一销售额扩大到两倍。
Volkswagen, which sold about 30,000 diesels in America last year, says it could have flogged twice that number if it had anticipated the rise in demand.
最近，牵牛星(altair)产品设计向公众透露了他们所说的世界上首批液压混合动力公共汽车，并说，这种混合动力车能够节省出一辆传统柴油机车能节省的燃料的两倍。
Altair Product Design recently unveiled what it says is the world's first series hydraulic hybrid transit bus and says it delivers twice the fuel economy of a conventional diesel bus.
本文对相继增压技术进行了较深入地分析，提出此项技术是改进机车柴油机部分负荷性能行之有效的比较理想的技术措施。
This paper analyses deeply about the discipline of sequential turbocharging, puts forward that this technique is more ideal in improving the performances of diesel locomotive with part load.
该模型可模拟计算机车柴油机的负荷特性、速度特性和牵引特性。
This model may be used to simulate the load-characteristics, the speed-characteristics and the tractive-characteristics of a locomotive diesel.
本文首先对重柴油在机车柴油机上应用的可行性和意义加以论证。
The paper first demonstrate the feasibility and the significance of the applications of heavy oil in locomotive diesel engine.
为了优化性能，在大功率机车柴油机上应用MIXPC涡轮增压系统。
The application of MIXPC turbocharger system to high power diesel engine can optimize its performances.
机油光谱分析技术已广泛用于内燃机车柴油机的磨损状态监测。
Spectrographic oil analysis technology has been used in the condition monitoring of diesel engines.
围绕重柴油的特性讨论了其在机车柴油机上燃用的难点及对策。
The difficulty and countermeasures in diesel engine burning heavy fuel were discussed taking into account the characteristics of heavy fuel.
采用矿车用柴油机机车牵引、人工架子车、柴油三轮车等运输矿石、废石。
The mine car towed by diesel locomotive, the manual rack truck and diesel tricycle are used for transporting ore and waste ore.
东风4C型机车柴油机机体采用铸焊结构。
The engine block for DF 4C diesel locomotives uses cast welding structure.
分析了内燃机车柴油机故障诊断技术的现状，在此基础上提出了开发柴油机诊断专家系统的必要性；
This paper analyzes the diagnostic technologies of the diesel at present, and points out that it is necessary to develop an diagnostic expert system.
大连机车车辆厂研制的东风4D系列内燃机车，是以240/275ZJD系列柴油机为动力的一组机车的统称。
DF4D series Diesel Locomotives designed and manufactured by Dalian Locomotive Works, are a group of locomotives that utilize 240/275ZJD series diesel engines.
机车柴油机烧低十六烷值柴油具有很重要的现实意义。
The steam locomotive has been superseded by the diesel locomotive.
该技术能满足机车柴油机功率调节范围大、热负荷变化频繁的要求。
This technology can meet the requirements of great scope of diesel engine power adjustment and frequent change of heat loading.
为此，本文针对机车工作环境的实际情况，提出了采用机车柴油机冷却水作为热源来加热燃油，从而控制燃油粘度的方案。
The paper bring forward the scheme of calefaction to heavy oil by the cooling water of diesel engine according to the actual condition of locomotive, so that the viscosity be controlled.
对东风7型机车柴油机运用中气缸盖裂纹情况进行了统计，对裂纹原因进行了分析。
The statistics of cracks of cylinder heads during operation of diesel engines for DF 7 locomotives were conducted. The reasons of cracks were analyzed.
阐述了实验室间比对的意义，并以机车柴油机燃油消耗率作为比对参数，说明实验室间比对的实施过程。
Taking specific fuel oil consumption of locomotive engine as a comparative parameters, the implementation procedure of the contrast between laboratories was described.
以DF 4 B型机车为例，系统地分析了造成柴油机机油压力低的原因，并提出其判断方法和对策。
Taking DF4B locomotive as an example, this paper analyses the reason of too low lubricating oil pressure in running diesel engine, and gives countermeasures for it.
寒冷气候条件下机车柴油机使用低标号柴油是铁路节能降耗、提高经济效益的有效途径。
It is an efficacious method that inferior brand diesel oil is used on locomotive diesel engine in cold weather to economize energy sources and increase economic benefit.
本文扼要地介绍了装在东风4型内燃机车上的16240Z型增压柴油机在不同海拔高度上的性能试验。
This paper presents the characteristics of 16240Z Diesel on Dongfeng-4 Locomotive run at various altitudes.
本文扼要地介绍了装在东风4型内燃机车上的16240Z型增压柴油机在不同海拔高度上的性能试验。
This paper presents the characteristics of 16240Z Diesel on Dongfeng-4 Locomotive run at various altitudes.
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