CAMLESS ENGINES A NEW APPROACH IN I.C.ENGINES
internal combustion comprise the valve train hardware . In the camless valvetrain, the valve motion is controlled directly by a valve actuator there's no camshaft or connecting mechanisms. Various studies have shown that a camless valve train can eliminate many otherwise necessary engine design trade-offs.Automotive engines equipped with camless valvetrains of the electrohydraulic and electro-mechanical type have been studied for over twenty years, but produc ....etc

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Project on CAMLESS ENGINES


Introduction

CAMS
Control the breathing channels (valves) of an IC engine
Connected to camshaft which is operated by crankshaft
Cams push open valves at proper time & guide their closure
But they are inflexible except VTEC & VVT-I
Engineers could not vary timing, lift & duration of valve opening infinitely.

Working of conventional engines

The crankshaft turns camshaft which operates valves by mechanism as in figure
Spring brings back valve to initial posi ....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 Diesel 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 MAN B&W takes a ....etc

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PRESENTED BY:
SHIJIL . P . K


ELECTRO HYDRAULIC CAMLESS ENGINE
WORKING OF CAM ENGINES
Crank shaft turn the cam shaft
Cam lobe pushes down the pushrod and it opens the valve
Return motion is carried out due to spring action on push rod
This results in closing of the valve
(Animation)
Back
WHY camless engines ?
Infinitely variable valve timing.
More torque is made available throughout the rev-range.
Increases durability and engine life .
Valve train weight which limits the rotational speed ....etc

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http://seminarsprojects.net/Thread-camless-engine-with-elctromechanical-valve-actuator--6644

http://seminarsprojects.net/Thread-camless-engine?page=3

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CAMLESS ENGINE

ABSTRACT

The cam has been an integral part of the IC engine from its invention. The cam controls the breathing channels of the IC engines, that is, the valves through which the fuel air mixture (in SI engines) or air (in CI engines) is supplied and exhaust driven out. Besieged by demands for better fuel economy, more power, and less pollution, motor engineers around the world are pursuing a radical camless design that promises to deliver ....etc

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CAMLESS ENGINE
INTRODUCTION

The cam has been an integral part of the IC engine from its invention. The cam controls the breathing channels of the IC engines, that is, the valves through which the fuel air mixture (in SI engines) or air (in CI engines) is supplied and exhaust driven out. Besieged by demands for better fuel economy, more power, and less pollution, motor engineers around the world are pursuing a radical camless design that promises to deliver the internal combustion engine s biggest efficiency improveme ....etc

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