Shanghai Diesel Engine Co.

Shanghai, China

Shanghai Diesel Engine Co.

Shanghai, China
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Li W.,Shanghai University of Engineering Science | Chen L.,Shanghai University of Engineering Science | Liu X.,Shanghai Diesel Engine Co. | Liu Y.,Shanghai University of Engineering Science
Advanced Materials Research | Year: 2012

In this paper, we shall first briefly introduce fuzzy sets and related concepts of the reaction principle of Cu-ZSM-5 catalyst with the NO, and the preparation of Cu-ZSM-5 catalyst is also investigated. And the NOx conversion efficiency of Cu-ZSM-5 catalyst is analyzed with the experiment. Compared to V 2O 5/WO 3/TiO 2 catalyst, the reaction activity of Cu-ZSM-5 catalyst at low temperature is much better, while the range of reaction activity temperature of V 2O 5/WO 3/TiO 2 catalyst is relatively wide. Finally, with the diesel engine ESC test, the Cu-ZSM-5 Catalyst for SCR system can effectively reduce the NOx emissions, and the diesel engine which is installed the SCR is able to achieve the requirements of Euro IV for NOx limits. © (2012) Trans Tech Publications, Switzerland.


Chu C.,University of Shanghai for Science and Technology | Yan T.,University of Shanghai for Science and Technology | Ling J.,Shanghai Diesel Engine Co. | Li J.,University of Shanghai for Science and Technology
Qiche Gongcheng/Automotive Engineering | Year: 2012

In this paper, taking a 6-cylinder supercharged diesel engine as object, a simulation design of the secondary exhaust cam, which reopens exhaust valve, is conducted for realizing the internal exhaust gas recirculation of diesel engine based on the strategy of exhaust gas re-suction. Specifically, a GT-Power simulation model for object engine is built first, and a simulation on the pressure wave in exhaust pipe is performed to determine the timing and duration of exhaust valve reopen, as the boundary conditions of cam design. Then on this base ten cam profiles with different lifts and duration angles are designed, and the rule of the effects of cam design parameters such as timing, duration angle and lift on the power and fuel economy performances and EGR rate of diesel engine is found. Finally the reasonable ranges of timing, lift and duration angle of secondary exhaust cam are given.


Zhao F.-Z.,Ningbo University of Technology | Wang J.-X.,Shanghai JiaoTong University | Ji L.-W.,Shanghai Diesel Engine Co. | Huang Y.-Q.,Ningbo University of Technology
Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering | Year: 2013

In order to exploit potentialities of energy saving, test investigation of waste heat sources in a light-duty vehicle powered by diesel engine was implemented for recovering waste heat energy using thermoelectric modules. By simulating vehicle driving conditions, in a temperature control laboratory it is obtained that the temperature of waste heat sources, such as water cooling system, cylinder head, cylinder block, oil pan, exhaust manifold and pipe, and so on, ranges from 34°C to 487°C. The temperature of outer wall around the manifold and exhaust pipe is highest, and that of outer wall around the water cooling system is lowest. Moreover, various parts of the same component also present different temperature distributions. These results, temperature distribution of waste heat source, temperature range, and temperature variation following vehicle conditions may provide theoretical basis for thermoelectric module arrangement and thermoelectric property utilization.


Zhu J.,Shanghai JiaoTong University | Wang S.-M.,Shanghai JiaoTong University | Cui Y.,Shanghai JiaoTong University | Zhang Y.,Shanghai Diesel Engine Co. | And 2 more authors.
Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering | Year: 2011

The exhaust pressure waves were measured under the conditions of various load characteristics for a turbocharged six-cylinder diesel engine to examine its exhaust pressure wave variation rules. Results indicate that for the turbocharged diesel engine with fixed valve timing, on various load characteristics, the variation rules of exhaust pressure wave average value are the same, the exhaust pressure wave average value increases with torque increasing; while compared exhaust pressure wave average values at condition points of equal torque, different speed and on the full-load speed characteristics, it increases with speed increasing. On various load characteristics, variation rules of the exhaust pressure wave intensity are also the same, the exhaust pressure wave intensity increases with torque increasing; while compared exhaust pressure wave intensity at points of equal torque and different speed, it increases with speed increasing, but for the points on the full-load speed characteristics, with speed increasing the exhaust pressure wave intensity first increases and then decreases.


Liu Y.-B.,University of Shanghai for Science and Technology | Chu C.-M.,University of Shanghai for Science and Technology | Ling J.-Q.,Shanghai Diesel Engine Co.
Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering | Year: 2014

In order to realize Internal Exhaust Gas Recirculation (IEGR) by using the method applying exhaust port pressure wave, the pressure wave varying characteristics in exhaust port during intake process were experimentally studied. For a turbocharged six-cylinder diesel engine, taking engine speed, load and injection advance angle (IAA) as operation condition variables, effects of every variable on the pressure wave shape, peak value and position (crankshaft angle) were studied respectively. Results show that the pressure wave peak value increases with engine load increasing, and its position is not affected by the load; with engine speed increasing, the pressure wave peak position retards, and its varying amplitude reaches the largest at IAA of 6°CA; with IAA decreasing, the pressure wave peak position retards in 100% and 75% of rated load.


Long K.,Beijing Institute of Technology | Long K.,North China Electrical Power University | Zuo Z.-X.,Beijing Institute of Technology | Xiao T.,Beijing Institute of Technology | And 2 more authors.
Journal of Beijing Institute of Technology (English Edition) | Year: 2010

The independent continuous mapping(ICM) method is integrated into element free Galerkin method and a new implementation of topology optimization for continuum structure is presented. To facilitate the enforcement of the essential boundary condition and derivative of various sensitivities, a singular weight function in element free Galerkin method is introduced. Material point variable is defined to illustrate the condition of material point and its vicinity instead of element or node. The topological variables field is constructed by moving least square approximation which inherits the continuity and smoothness of the weight function. Due to reciprocal relationships between the topological variables and design variables, various structural responses sensitivities are derived according to the method for calculating the partial derivatives of compound functions. Numerical examples indicate that checkerboard pattern and mesh-dependence phenomena are overcome without additional restriction methods.


Xie G.,Shanghai Diesel Engine Co. | Shi L.,Shanghai JiaoTong University | Xie X.,Shanghai JiaoTong University
SAE Technical Papers | Year: 2014

In the internal combustion engine, about 25%-40% of the energy released by burned fuel is taken away by the exhaust gas. The part of the usable energy in the exhaust can be used in the turbocharged engine. So, at present, turbocharged diesel engine hasn't made full use of exhaust gas energy. The authors propose a model of the 4-stroke turbocharged diesel engine of split exhausting system. Adding a rapidly on-and-off exhaust control valve between exhaust passage and manifold in the 4-stroke turbocharged diesel engine can improve the utilization rate of the usable energy in the exhaust. By utilizing the mean effective pressure (MEP), this paper is to calculate the maximum usable energy, the energy provided by exhaust and the energy required by intake. The results gets that the new type of exhausting system can help engine to increase usage rate of the exhaust gas energy to around 20% at the rated condition compared to the existing vehicle diesel engines with VNT. In a word, the new model can decrease fuel consumption by 5% than VNT turbo at the rated condition. Compared to VNT turbo, the optimized new model can lower fuel consumption not only at the rated condition, but at the max torque condition as well. It can decrease fuel consumption by 6% at the rated condition and can decrease fuel consumption by 2.5% at the max torque condition approximately. Copyright © 2014 SAE International.


Trademark
Shanghai Diesel Engine Co. | Date: 2010-07-06

Internal combustion engines, not for land vehicles; diesel engines, not for land vehicles; gasoline engines, not for land vehicles; generators of electricity; boat engines; agricultural machines, namely, combines; loading machines; earth moving machines; excavators; road rollers, namely, asphalt paving machines; parts and accessories of diesel engines, namely, cylinder block, cylinder heads for engines, crankshaft, connecting rods for machines, motors and engines, cylinder liner, internal combustion engine parts, namely, pistons, oil, gas, air filters for motors and engines, oil pumps for use in motors and engines, water pumps for use in motors and engines, starter alternators, starter motor, gaskets for internal combustion engines, engine camshafts, fuel injectors, engine bearings.


Li H.-Q.,University of Shanghai for Science and Technology | Chu C.-M.,University of Shanghai for Science and Technology | Ling J.-Q.,Shanghai Diesel Engine Co.
Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering | Year: 2011

A simulation model of diesel engine was established with GT-Power software based on computational fluid dynamics (CFD) design method for modern engine. Using the model, the effects of intake pipe structural parameters on flow characteristics and fuel consumption were studied. The results show that with intake branch pipe length shortening, the volumetric efficiency increases obviously and the fuel consumption reduces gradually. With intake branch pipe diameter increasing, the increment of volumetric efficiency becomes limited, the fuel consumption initially decreases greatly and then changes slowly. On this basis, an improved scheme of intake system was proposed. Compared with original engine, after optimization the fuel consumption decreases by 2~3 g/(kW·h) and the power increases by 1%~2%.

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