In S.I engine, the knocking occurs at the end of combustion whereas in C.I engine knocking occurs at the very beginning of combustion. The detonation in the S.I engine is of a homogeneous charge causing very high rate of pressure rise and very high maximum pressure. In the C.I engine, the fuel and air are
Comparison of Knock in S.I and C.I Engines Read More »
In petrol engines, a carburetor is employed to mix air and fuel supply system in the desired ratio. But in diesel engines, air alone is compressed in the cylinder. The high pressure is about 35 to 40bar and the temperature of this air after compression is about 600°C. At the end of compression stroke, the
Fuel Supply System in C.I (Diesel) Engine Read More »
In an action for negligence, the plaintiff has to prove the following essentials of negligence : That the defendant owed duty of care to the plaintiff; The defendant made a breach of that duty; The plaintiff suffered damage as a consequence thereof. Duty of care to the plaintiff It means a legal duty rather than
Essentials of Negligence Under the Law of Torts Read More »
Breach of duty means non-observance of due care which is required in a particular situation. What is the standard of care required? The standard is that of a reasonable man or of an ordinarily prudent man. If the defendant has acted like a reasonably prudent man, there is no negligence. As stated by Alderson B.
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The jurisprudential concept of negligence defies any precise definition. Eminent jurists and leading judgments it is said have assigned various meanings to negligence. The Apex Court in Jacob Mathew V. State of Punjab, observed : “Negligence is the breach of a duty caused by the omission to do something which a reasonable man, guided by
Negligence in Tort Law – Pedagogy Zone Read More »
It is employed in petrol engines. Fig shows the wiring diagram of a simple coil battery ignition system of a four cylinder engine. This system is used in automobiles. Construction: It consists of a battery, ignition coil, condenser, contact breaker, distributor and spark plugs. Generally, 6 or 12 volts battery is used. The ignition coil
Battery Ignition System or Coil System Read More »
In magneto ignition system, the battery is replaced with a magneto. Fig. shows the wiring diagram of a magneto ignition system. It consists of a switch, magneto, contact breaker, condenser, distributor and spark plugs. This system is used in two wheelers like motor cycles, scooters. Construction : The magneto ignition system consists of a rotating
Magneto Ignition System Advantages and Disadvantages Read More »
Systematic and Random Errors in Measurement Systematic error is usually divided into two different categories: Instrumental errors Environmental errors Instrumental error : These errors are due to shortcomings of the instrument. These are errors inherent in measuring instruments because of their mechanical structure. For example, in the D’Arsonval movement friction in bearings of various moving
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Errors in measurement = Measured Value – True value Error is the different between the measured value and the true value. The errors in measurement can be expressed either as an absolute error or an relative error. Absolute error The absolute error is classified into two types: True absolute error Apparent absolute error True absolute
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The types of carburetor can be classified according to the following considerations. Carburetors are used almost all SI engine for the preparation of combustible air fuel mixture as a charge. Types of carburetor are : According to the direction of flow. a. Uplift carburetors or updraft carburetors. b. Down draft carburetors C. Horizontal carburetors According
Types of Carburetor and Working, Defects Read More »