How does resurfacing a cylind head in OHC engine affect valve timing and what should be done when a head needs resurfacing?

Q: Give 5 operating conditions that affect the volumetric efficiency of SI engine?

A: Volumetric Efficiency: Volumetric efficiency is the ratio of volume to intake of air-fuel to the…

Q: according to the C15 A.C.E.R.T caterpillar engine manual =, how is TDC 1o r 6 located

A: On a C-15 serial # 6NZ there is a threaded pipe plug on the front side of the flywheel…

Q: Explain the benefit of using 4 valves per cylinder (2 Intake and 2 exhaust) instead of 2 valves per…

A: when there are 4 valves used then there are following advantages :

Q: Cam bearings in OHV engines are typically whichtype?a. Split insertb. Full-roundc. Thrustd. None of…

A: Overhead valve engines are also called pushrod engines. The camshaft of OHV is mounted in the…

Q: • Explain turbo-charged and super-charged engine in comparison to naturally-aspirated engine. •…

A: The objective of this question is to understand the differences between naturally-aspirated,…

Q: Explain the Four - Stroke Cycle Engine p

A: Four strokes cycle engine can be a diesel engine or petrol engine if it is a diesel engine it has…

Q: What is the range of operating AFR in diesel engines?

A: Air-fuel ratio (AF or AFR) is the ratio between the mass of air ma and mass fuel mf  used by the…

Q: What are the two main valve operations that are altered during modern variable valve timing systems?…

A: Answer are as following:-

Q: Question 6 uontanes of the pressure carburetor system.

A: The main advantage of pressure carburettor system are - reducing icing tendency -better efficiency -…

Q: Q / What is the number of crankshaft rotations during 3600 (R. P. M) in 1- Two-stroke engine 2- In…

A: Understand that the two stroke engines completes on complete cycle in one rotation 360 degrees of…

Q: Which engine design feature influences the emissions most strongly?

A: Given Data→ Emissions  Design feature

Q: Discuss briefly as points the importance of Cetane Number on the combustion process and engine…

A: Given Cetane Number To find Cetane number importance

Q: What are the advantages and disadvantages of the engine lubrication

A: The lubrication system's job is to provide oil to moving parts in order to minimise friction…

Q: Power (KW) 89 Torque Nm @ rpm 170 @ 5500 Bore (mm) (6.80x10^1) Stroke (mm) (7.2000x10^1) Compression…

A:

Q: The 40mm diameter steel rod AB shown in Figure 2 is resting on frictionless rollers between two…

A:

Q: A six-cylinder engine has a 1 5 3 6 2 4 firing order. Technician A says that after cylinder number 1…

A:

Q: What is exhaust stroke?

A: Internal Combustion Engine: Internal combustion engine mainly known as IC Engine. It is called an…

Q: Cylinder liner are generally used on diesel engines because: OA Rubbing speeds are reduced through…

A: correct option for first question is B, Reason mention in below step

Q: What precaution should you take to prevent hydraulic injection?

A: Some precautions to be taken to avoid hydraulic injection are, When the hoses or hydraulics are…

Q: Chaper 32 question 2 What can be used to check for leaks on the presure side of a turbocharger…

A: The leaks from the turbocharger of air can occur both on the vacuum side, one is air intake to the…

Q: Which of the following is similar to a PCV valve but is specific to diesel engines? PCM EGR AIR…

A: PVR (positive crankcase ventilation): The PVR valves are not required in diesel engines. The PCV…

Q: engine and why? 04/ Write a notes on heat balance sheet, draw that on the energy flow and enhance…

A: Heat balance sheet :-

Q: What affect shift valves to cause a downshift?

A: Downshifting is the process of lowering the gear of the transmission system of an automobile. There…

Q: What happens to the engine due to high temperature ?

A: Engine: It is a mechanical device which is used to convert chemical energy of the fuel into…

Q: what is clearance volume in engine?

A: Clearance volume is defined with a schematic diagram

Q: An engine starts and runs briefly after a small quantity of fuel is put into the spark plug hole,…

A: An engine starts and runs briefly after a small quantity of fuel is put into the spark plug hole,…

Q: Answer the following questions on diagnostic trouble codes (DTCs) relating to engine management…

A: Diagnostic Trouble Codes (DTC):  It is the essential codes that onboard computer diagnostics systems…

Q: Technician A says it is important to note transmission fluid temperature when checking the fluid…

A: For level checking of transmission fluid its temperature is checked. Transaxle has fluid for…

Q: ot

A: introduction: This can be accomplished in one of two ways: through air cooling or through liquid…

Q: Explain the term delay period as associated with CI engines and its factors

A: Delay Period: The ignition delay in a CI engine is defined as the time or crank angle interval…

Q: What is the rotational travel through which the intake valve is open? (in degrees)

A: Given data:- IO 22° BTC EO 64° BBC IC 68° ABC EC 31° ATC To find:-the rotational travel through…

Q: what is the meaning N14 in the N14 cummins engine

A: Solution:

Q: What are the difference between direct and indirect combustion chamber and their advantages

A: A combustion chamber is a portion of an internal combustion engine in which the fuel/air blend is…

Q: the 2 separate

A:

Q: an engine is being discussed for lean running condition. technician A checks for air leak in the…

A: There are five factors that causes to run engine in lean condition. They are Fuel System Oxygen…

Q: Explain basic concept of turbocharger or supercharger.

A: "Supercharger" is the generic term for an air compressor used to increase the pressure or…

Q: Explain the influence of engine speed upon the ignition delay.

A: Ignition lag Igniting the flame itself or getting a spark for ignition requires time, and the delay…

Q: Write a note and explain about Modification of turbojet engine

A: TURBOJET ENGINE  A turbojet engine has all the power by expelling a high-energy gas stream from the…

Q: turbocharging is disengaging the transmission system. increasing the noise coming from the exhaust.…

A:

Q: How ECU controlled ignition system works in SI engines?

A: The ECM regulates four main parts of your vehicle's operating systems: air-fuel ratio, idle…

Q: The injector function in diesel engine is to a. inject fuel continusously when engine is running. b.…

A: The function of injector in diesel engine is to spray the atomized fuel (fuel splits into a tiny…

Joining Processes

It is the process of permanent or temporary joining of two metal pieces with the help of heat or pressure. Two metal parts are assembled by applying an energy source for the formation of a single unit. The obtained joined metals cannot be fragmented easily with the application of any force.