Jet impingement heat transfer – Part I: Mean and root-mean-square heat transfer and velocity distributions
Abstract
Impinging jets provide a means of achieving high heat transfer coefficients both locally and on an area averaged basis. The currentwork forms the first stage of a two part investigation of heat transfer distributions from a heated flat surface subject to an impinging airjet for Reynolds numbers from 10,000 to 30,000 and non-dimensional surface to jet exit spacing, H/D, from 0.5 to 8. In the present paper,the rel ....etc

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DjtmtjapjmTjdgumjpxjgugumjpupvdmtpgmtpglngjmtpgajptnjgtwjpuwdjgpm ....etc

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ME Engines “ the New Generation of Diesel Engines

INTRODUCTION

The introduction of the electronically controlled camshaft-less low speed diesel engines, which is now gaining momentum, is a milestone in diesel technology that deserves a place in history like Rudolf Dieselâ„¢s first engine in Augsburg, the 1912 motor vessel Selandia, the introduction of turbocharging on two-stroke diesels in 1954, and the first SCR (Selective Catalytic NOx Reduction) systems on ships in 1989. This paper will outline how MA ....etc

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INTRODUCTION

A. Relevance :-
The economic of India depends to a large extent on the wheels of transport. The specter of economy ruin due to depleted oil reserves has changed the interest of scientist and research work towards alternative fuels for motor vehicle. Viable substitute for motor spirit are gaseous hydrocarbons, hydrogen gas, alcohol & electricity that run on hydrocarbon gas & electricity are still in the experimental stage. While alcohol is used as a fuel chiefly in Brazil, it?s feas ....etc

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Abstract
Homogeneous charge compression ignition (HCCI) is a form of internal combustion in which well-mixed fuel and oxidizer (typically air) are compressed to the point of auto-ignition. Homogeneous charge compression ignition (HCCI) engines have
the potential for high efficiencies and low pollutant emissions.By comparison with spark ignition (SI) engines, for example,HCCI engines can yield a 15-20% increase in fuel economy while emitting lower levels of oxides of nitrogen (NOx).HCCI engines can also achieve thermal eff ....etc

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The world is surely and steadily moving towards the newer generation of direction injection diesels, be it unit injected or common-railed. Mercedes Benz had already introduced the common rail engine in India a few years back but then they are the technology leaders worldwide and augur no comparisons. so. it was a matter of time before one of the other car manufacturers in India took up the challenge and introduced the engine in a car that could be available to a much larger segment of the car-buying populace.

As it has done on a number of ....etc

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Presented by:
A.JohnBritto
C.Kanaga Raj
P.Senna Kesavan
A.VinothHEAT TRANSFER PERFORMANCE IN 3D INDUCED FINNED HEAT PIPE

ABSTRACT
3D induced finned steel-water heat pipe is carried out in this project.

All the main parameters that can significantly influence the heat transfer performance of heat pipe ,such as working temperature, heat flux, inclination angle, working fluid fill ratio (defined by the evaporatio ....etc

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Valve timing is the regulation of the points in the combustion cycle, at which the valves are set to open and close. Since the valves require a finite period of time in which to open or close without abruptness, a slight lead-time is always necessary for proper operation. The design of the valve-operating cam provides for the smooth transition from one position to the other, while the cam setting determines the timing of the valve.

In a typical four-stroke engine, the inlet valve is set to open before TDC (top dead centre), towards the end o ....etc

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High Conductance Heat Transfer Using Solar Heat Pipe Collector

presented by :-
MR. SHIVAJI D. YADAO1, MR. PRMENDRA J BANSOD2
Dr. D.Y.Patil Institute of Engg. & Tech.,Pune University, Pune,
Dr. D.Y.Patil Institute of Engg. & Tech.,Pune University, Pune,

abstract
In recent years it has become increasingly important to develop methods for efficient transport of thermal energy from one location to another. Moreover the advent of the space age has stimulated research for heat transfer devices which are ....etc

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006/2016
Maximum : 100 marks
Time : 1 hour and 15 minutes


1.Pick out the odd one from the following:
(A) cylinder block
(B)crank case
(C ) crank shaft
(D)cylinder head


2.In an engine the temperuture of the piston will be more at:
(A) the crown of the piston
(B)the skirt of the piston
(C ) the piston walls
(D)the land of the piston

3.Which part is not common between the petrol and diesel engines?
(A) Air cleaner
(B)Silencer
(C ) Crank shaft
(D)Spark plug

4.The firing order of a four cylinder inl ....etc

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