Recent questions tagged two-wheeler-&-three-wheeler-technology

Description : Explain with block diagram working of microprocessor controlled ignition system.

Last Answer : The microprocessor controlled ignition system uses input from sensors like crankshaft position sensor, oil temperature sensor, ignition trigger coil and throttle position sensor. The ignition module/ ... the ignition module / microprocessor enables the spark to be timed accurately.  

Description : Select a tyre for sports bike and justify it with illustrations.

Last Answer : Criteria for selecting tyre for Sports bike : 1. Road Grip: It should have a very good grip of road surface on hot/ cold/ wet/ dry/ gravel road surface while travelling straight or cornering. 2. ... Tubeless Tyre (TT) Tyre pressure: front- 32 psi and rear 36 to 38 psi High sectional width  

Description : Explain with sketches effect of steering geometry on vehicle performance.

Last Answer : The performance of vehicle is affected by steering geometry as turning ability . maneuverability , stability etc. The effects are due to change in the steering geomentry parameters like trail, cater angle or ... of dropping of steering head also increases with larger rack angles

Description : Explain with relevant justification that use of catalytic convertor reduce the tail pipe emissions.

Last Answer : The emissions from exhaust of vehicle are pollutants like Carbon monoxide (CO), Un-burnt Hydro carbon (UBHC), and oxides of nitrogen (NOx) without any after treatment device. Use of catalytic ... to carbon dioxide. In this way catalytic convertor converts more harmful gases into less harmful gases.

Description : Explain with sketch working of electronic petrol injection system. State its advantages over carbureted fuel system. 

Last Answer : Working of Electronic Fuel injection system: Because mechanical injection systems have limited adjustments to develop the optimal amount of fuel into an engine that needs to operate under a variety of different ... (acceleration). 7. Compact design of fuel supply system. 8. Modular design

Description : Select a material for a frame of 350 CC motorcycle and justify its use.

Last Answer : The material used for heavy duty motor cycle like 350 cc motor cycle depends upon design, strength and type of frame being used. Generally, Steel is commonly used material due to reasons like joining of ... known as AISI4140 steel. The some parts are made of aluminum alloy to reduce the weight.  

Description : Describe effects of frontal area exposed in motor cycle on performance of vehicle. 

Last Answer : The amount of drag an object is subjected to comes from two things; the frontal area of the Motorbike and what's called its drag co-efficient. The frontal area of motor cycle involves ... mud guard which reduce the frontal area will improve the performance reducing air resistance called air drag. 

Description : “Driving habits are closely associated with drivers safety” justify this statement with illustrations.

Last Answer : Driving habits are closely associated with drivers safety because drivers do not follow the following good driving habits accidents are likely to occur. i) Drivers habit to wear day night goggle will ... vehicle in economy mode not only ensures the fuel economy but also helps to improve safety. 

Description : “Ergonomics plays an important role in passenger comfort” justify this statement with illustrations.

Last Answer : Ergonomics plays an important role in ensuring complete comfort for the driver and the passenger, ensuring smooth journey, and maximizing experience. Ergonomics is the process of designing or arranging ... involves study of human seating posture, human body dimensions etc. During ride the vehicle  

Description : Describe role of crash bar and saree guard in two wheeler safety.

Last Answer : The role of i) Crash bar: Crash bars aim to protect motorcycle engines and body panels as well as it is used to protect the rider. It is also used as a mount point for accessories like highway ... guards will not only protect the rider, but also the cargo from being pulled into the rear wheel. 

Description : Describe ergonomic aspects of seat arrangement of two wheeler.

Last Answer : ergonomic aspects of seat arrangement of two wheeler: The design of the motorcycle is limited by the physical constraints of making the machine work. Comfort and ease of use, and ultimately your safety, ... spring & leather) to protect both rider & pillion rider from shocks & vibrations on road. 

Description : “Indicator lamps play an important role in vehicle safety” justify this statement with suitable illustrations.

Last Answer : Indicator lamps are used for indicating others the intention of driver for turning the vehicle in particular direction before the actual turning is started. Without the indicator lamps it would not be ... distance and making the other drivers alert for the same. It thereby avoid the accident.  

Description : Describe working of two wheeler charging system with labeled sketch

Last Answer : Working of charging system of two wheeler: The main components of two wheeler charging system are- 1.Battery 2.Regulator cum rectifier unit (Regulator and rectifier are assemble in one unit) 3. ... case of failure of fuse it disconnects the supply from regulator cum rectifier to battery.  

Description : Describe working of capacitive discharge ignition (CDI) system

Last Answer : Working of CDI system: It mainly consists of 6-12 V battery, ignition switch, DC to DC convertor, charging resistance, tank capacitor, Silicon Controlled Rectifier (SCR), SCR-triggering device; step ... of AC to DC charging device, signal conditioning and amplifying unit and control circuit.   

Description : Describe push rod overhead valve operating mechanism with neat sketch.

Last Answer : Push rod Overhead valve operating mechanism (OHV 4 -S engine): An overhead valve engine (OHV engine) is an engine in which the valves are placed over the cylinder head. The camshaft drive-chain ... . Overhead valve arrangement makes the engine slightly shorter than overhead camshaft.   OR  

Description : Describe mono-shock regular swing arm suspension system with neat sketch.

Last Answer : Mono-shock Regular swing arm : Original technology of mono-shock comes from the racing world where motor cycles compete in most extreme conditions. More advanced version of this technology is employed in these ... only one shock to adjust, and there is no worry about matching two shocks.   

Description : Describe working of constant mesh gear box with neat sketch.

Last Answer : Working of constant mesh gear box: A simplified diagram of constant mesh box has been shown in Figure. In this gear box, all gears on the main transmission shaft are constantly connected to corresponding ... In this way by sliding the second dog clutch, second and first gears are obtained.

Description : Describe procedure to adjust valve clearance of four stroke engine of two wheeler with necessary sketches.

Last Answer : Procedure: 1) Remove the valve cover according to your shop manual's instructions. Don't try to hammer a screwdriver or chisel between the valve cover and the head. You will ruin the gasket surface in a ... When the clearance feels good, hold the adjusting screw, and tighten up the lock nut. 

Description : Describe constructional details of single cradle frame with neat sketch.

Last Answer : Single cradle frame :  The single cradle is the simplest type of motorcycle frame, and looks similar to the first ever motorcycle frames. It is made from steel tubes that surround the engine with a main ... found in off-road motorcycles.  Figure: Typical motor cycle frame of cradle type

Description : Define: (i) Trail , (ii) Caster angle

Last Answer : i) Trail: Trail refers to distance between imaginary point where the steering axis intersect the ground and the centre of tyre contact point. Measured length between the imaginary point and centre of front tyre ... in the plane of the wheel is called the caster angle. It ranges from 20 to 80. 

Description : State functions of carburetor.

Last Answer : The main functions of the carburettor are: 1) To keep a small reserve of fuel at a constant head. 2) To vaporize the fuel to prepare a homogeneous air fuel mixture. 3) To supply correct amount of the air fuel mixture at the correct strength under all conditions of load and speed.

Description : State any two types of muffler with their application.

Last Answer : Applications of muffler: 1. Baffle type - Used in motor cycle. Straight baffle type muffler is used in those motor cycles who like their bikes to be loud and Quiet baffle type muffler is used in regular ... sound is produced and need to be reduce. e.g. High cc bikes like Royal Enfield etc.  

Description : List materials used for two wheeler frame.

Last Answer : The use of steel tubing is still common. In modern times other materials, such as titanium, aluminium, magnesium, and carbon-fibre, along with composites of these materials, are now used.

Description : Enlist features of tubular frame.

Last Answer : Feature of tubular frame: 1) It acts as a beam supported by the wheels to carry the weight of the propelling machinery and the rider. 2) It provides a non-flexing mount for the engine suspension and wheel. 3) It provides free steering movement of the front wheel