Ic engine Definition and 39 Threads

Since about 4 months now, I was constantly thinking how a jet engine works and why it can't replace the ICE for cars, particularly when it has no reciprocating masses. Just two days ago, it triggered me that the power stroke of an ICE makes the biggest difference. In a diesel ICE, during the...

Hi, Have you ever tried to invent anything? Long ago, as a school boy after learning about internal combusion engines, I 'invented' a rotary engine. (It had actually been invented in the 19th century) My dad said "If Fords can't do then you can't" So I stopped. Years later I learned about...

A drop of fuel is ignited in an engine cylinder, that produces heat, light and sound energies from the chemical energy stored in the drop of oil. What I am not clear about is how heat energy gets transformed into mechanical work? I think the heat energy produced from ignition flows from burnt...

What would happen if flywheel is not installed to IC Engine? Does it have serious consequences?

In case of diesel cycle thermal efficiency is low, because heat addition takes place at constant pressure.so can we introduce some retractable plate which sits below the piston during end of compression stroke,and retracts back after heat addition,thus providing constant volume heat addition and...

Can somebody explain how to calculate brake power in IC engines ?

Does anyone know of a source, on the Internet preferably, for component inertial data for a real IC engine? In particular, what I'd like to obtain (for some real engine, any engine) are these items: 1. Piston weight (including wrist pin) 2. Cylinder bore dimension 3. Connecting rod length...

What is the heat capacity values of diesel in liquid and vapour state?

Is the gas coming out of the exhaust during the working of a 4 stroke engine continuous as long as the automobile moves? I know the intensity of air used depends on the speed, but the air that exhausts out, does it come continuously in time or like a discrete function ?

Hi , Everyone… one very general question regarding ic engine is suppose our vehical (Ic engine) Is at rest ,and we are ready to start vehical , when we kicked the kick By our legs then there is compression stroke..,right?, then when air fuel mixture is sucked in cylinder ( When there is...

hi.I would like to know something about the IC engine.I just read an article.It said that 30% efficiency is gone through conduction of heat by the cylinder wall.If it is reason for one of the efficiency loss why can't we build an cylinder coated with a material that is non conduction.So only...

Homework Statement A two-stroke internal combustion engine can be modeled by the following cycle. The cycle starts with the piston chamber at maximum volume V1 = 1000 cm3, filled with an air-fuel mixture – which we treat as an ideal gas – at atmospheric pressure and room temperature (p1 =...

My tutor says Henry Ford opted for a horizontal-bed IC engine for the Model-T as this would avoid having any gyroscopic effects(normally associated with a vertical oriented engine). My question is,how does it matter if the engine cylinders are oriented horizontally or vertically?since the...

when they say the inertia forces in the engine,what does it refer to ? this is with respect to the fact that in a diesel engine the point of maximum pressure is at combustion as there are no sufficient inertia forces to cancel out load forces..

(I have trouble in finding the stroke length and fuel flow rate) From Heywood,E2.11 You are designing a 4 stroke CI to provide a brake power of 300kW,Naturally aspirated at its max rated speed.Based on typical values for brake mean eff.pressure(bmep){700kPa to 900kPa} and max mean piston...

Hey Everyone, I'm a mechanical engineering student and I was wondering if there was any good book regarding IC Engine design; which includes timing belt design, camshaft, crankshaft, rocker-arm, pump design etc.. a whole in one package that design engineers use for designing ic engines...

1. The problem DIESEL IC ENGINE We were given a excel sheet, with RPM, Torque, Power, Bmep, Fuel mass flow rate, Airmass SFC, Engine Air inlet and Exhaust temp. The engine capacity is 2.2litre 4 stroke. Fuel specifications: 50 Cetane (0.05% Sulphur) Coolant = Fresh water with 45% glycol mix...

Hi, I came across an engine performance graph as attached. I have basically two questions looking at that: 1.To do any engine testing we keep some parameter constant - May be throttle position or applied load (torque) or speed or power. What is kept constant for this test? 2.In the...

How does a flywheel reduce torque fluctuations in a IC engine? Of course the more inertia you have, the less rotational speed fluctuation you get. But how does more inertia lead to less 'torque' fluctuation?

Hello, I am to design a pump for the cooling circuit of a 4-stroke, 4-cylinder gasoline engine. The engine has already been designed. I am currently referring to Pump Handbook (McGraw Hill publications) and trying to get a hold of Centrifugal Pumps-Design & Application (Ross-Lobanoff). One...

Hi guys! This is a question related to IC engine characteristics(performance curves, torque-speed curve). Why is the Starting torque of IC engines small? Also why does it decrease after a maximum? Secondly, In one of the lectures, our professor asked us that in a gearbox form where does the...

I was thinking the other day about a possible hybrid conversion vehicle that could store braking energy as compressed air. The setup is like this: The engine valves are all electric solenoid controlled. When the motor is running on gasoline it run like any other 4-stroke IC engine. There is...

I found following claim from an inventor: “The limit of IC engine efficiency cannot be normally exceeded due to facts entropy cannot be decreased and 2nd law of thermodynamics (heat cannot flow from cold to hot body). Injecting water in the beginning of expansion stroke can overcome these...

how electric motor can have full torque at start? is it because magnetic forces are in phase with turning moment curve of rotor of electric motor. i mean the peak of magnetic forces and peak of turning moment occurs at same time. if we implement this in IC engine does it to can have full torque...

Hi Guys, I would like to write some software to teach people to tune internal combustion engines. More specifically, as some of you may know, an engine is controlled by two 2D grids or 'maps' which have engine load on one axis and engine RMP on the other. One map tells the engine how early to...

i have diagram of the turning moment in flywheel in internal combustion engine , i want to determine the mass of moment of inertia of the flywheel needed to keep speed fluctuation < or equal 1.5% at engine speed 560 rpm ? http://img534.imageshack.us/img534/1765/57306264.jpg

Is 3 stroke engine possible??if not why?

Hello this is my first post on the forum, i have very little knowledge in physics and high level mathematics, but for the past few years I've been dabbling with excel on a way to compare and give rough estimates of many facets of engines. At the moment what I am working on is determining the...

Hi, I have this question that, how do we calculate the distance an IC engine can propel a vehicle for given certain conditions? And what would be those required certain conditions? As a test case, i was looking at this engine: http://www.yanmar.com.au/industrial/la_series/l48ae.htm...

Homework Statement a mixture of 0.64 x 100 percent iso-octane and {1-0.64} x 100 percent methanol, based on volume, is mixed with air and combusted. Calculate the stoichiometric air fuel ratio. Note: please not this is mixing on a molar basis, not mass basis. It is necessary to perform a...

pressure, temperatur inside ic engine... 1. what will be the temperature produced during the combustion process?? (NEGLECTING THE COOLING EFFECT PRODUCED by the cooling system) 2. The temperature of the exhaust gas at the exhaust "port" ??(CONSIDERING AND WITHOUT CONSIDERING THE COOLING...

Could some one tell me if there is any method to find out the instant pressure inside the combustion chamber of the internal combustion engine. I plan to change the way engines work if the pressure can be monitored.

The idea seems possible with modern materials, the globe is controlled by a hydraulic stepper motor (which is also possible) according to engineers i have spoken to, the only way to find out if the whole idea is good is to make one, now i am in the sticky stuff, it requires MONEY, should i...

Could you tell me where to find the retailer of IC engines of 3.2 cc size in Delhi and how much it would cost. I have been told by someone that we would be able to get it in Preet Vihar. Could any of you give me some idea in this regard.

what is the equation for the mechanical efficiency of an internal combustion engine? what are the formulas for 'ip' for 4-stroke and 2-stroke engines? thank you

Some years ago i read of an attempt to make major engine componets from ceramics, i see now that ceramic coating is available for some parts (piston), so what is preventing the use of ceramics for say an engine block or cylinder head?

There is a fair amount of empirical evidence in my world that people experience their Air-Fuel ratio going lean as they go down the race track (drag race). There are all kinds of theories that abound, but none of them make any sense (at least not to me). Most of theories have to do with the...

I am a car enthusiast and have absolutely no engineering educational/knoweldge, so keep that in mind. :smile: If an internal combustion engine revolutions per minute increase simply by opening the throttle, I assume that this is a function of the pressure differential between the air outside...

This may be the wrong forum, so mods please move if necessary (and forgive my error :) ). I was trying to research combustion temperatures (for a typical four stroke engine) as they relate to air/fuel ratio (AFR). I have googled my butt off, and I read many interesting things. But, I still...