Why do 4 stroke engine uses valves while 2 stroke engine uses ports ????

Why do 4 stroke engine uses valves while 2 stroke engine uses
ports ????

Question Posted / vikas bhardwaj

4 Answers
20094 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Why do 4 stroke engine uses valves while 2 stroke engine uses ports ????..

in 2 stroke engines too valves can be designed and also
there are 2 stroke diesel engines with valves..
but common 2 stroke engines like that of a kinetic honda
engine don't have valves bcos it simplifies the construction
a lot and by arranging the ports in such a manner it
achieves the purpose..bt then it creates a lot of
inefficiency and waste of lubricant.. so no valves are used
where these can be compromised or minimised by other methods..

Is This Answer Correct ?

13 Yes

11 No

Why do 4 stroke engine uses valves while 2 stroke engine uses ports ????..

Answer / yash chauhan

basically ports and valves are same, they are used interchangeably most of the times but the basic difference in between them is Ports are mainly the opening in the cylinder head they allows the passage of gas/mixture to the cylinder whereas Valve are moving up and down allowing the gases to come or to escape from engine cylinder.

Is This Answer Correct ?

7 Yes

6 No

Why do 4 stroke engine uses valves while 2 stroke engine uses ports ????..

Answer / atul sharma

In two storke engine two storke will take palce
simultaneously so no need to uses valve .But in case of
four stoke engine all the operations are takes place
different time so valves are required .

Is This Answer Correct ?

2 Yes

12 No

Why do 4 stroke engine uses valves while 2 stroke engine uses ports ????..

Answer / babu

in two stroke engine needs suction and charging at the same
time when the piston move down wards air fuel mixtures
enters throgh port due to the hitting of back portion of the
piston ..

Is This Answer Correct ?

7 Yes

18 No

Post New Answer

More Mechanical Engineering Interview Questions

1TR IS = ? CFM

10 Answers Wipro,

What is snapring ?

2 Answers CPCL,

If saturated temp of water is 99.8degc at atmospheric pressure,then how the water of sea is evaporated at normal temp 71

3 Answers TATA,

Define a mechanism?

0 Answers

what is carburateer

9 Answers

Why do you want to work at our company

4 Answers Chevron, Cisco,

Enumerate or identify the parts of purifier bowl assembly

0 Answers RRB,

Name of the tables which is going to join two tables in querry ?

0 Answers

In order to increase efficiency and reduce co emissions and other emissions, clear coal technologies are receiving major attention. What are these ?

0 Answers

what is ultimate tensile strength? for any material give relation ship between various stretgth like tesile, shear, % dformation?

7 Answers

1.select bearing for flywheel to have a life of 5 years ? 2.select minimum diameter of the crank pin to work for at least 1 year? 3.select suitable belting to connect motor and pulley shaft(flywheel shaft)?

0 Answers

function of waterpump

1 Answers

For more Mechanical Engineering Interview Questions Click Here