Autoworld
Autoworld.com.my  

Welcome Guest ( Log In | Register )

3 Pages V   1 2 3 >  
Reply to this topicStart new topic
> Ps/rpm
hwk
post Mar 26 2009, 06:54 PM
Post #1


Veteran
**

Group: Members
Posts: 211
Joined: 14-June 07
Member No.: 66,502



I saw honda 1.8 and 2.0 car almost with 140ps, so just want to know which it more powerful, i mean the max horsepower

-140@6300
-136@5600
-132@6000
Go to the top of the page
 
+Quote Post
sorpoh
post Mar 27 2009, 09:43 AM
Post #2


Taxi Driver
**

Group: Members
Posts: 426
Joined: 21-November 07
From: Malaysia
Member No.: 69,729



QUOTE (hwk @ Mar 26 2009, 06:54 PM) *
I saw honda 1.8 and 2.0 car almost with 140ps, so just want to know which it more powerful, i mean the max horsepower

-140@6300
-136@5600
-132@6000


no adays ppl normally wont see hp...they will go for torque..corect me if i m wrong wink.gif
Go to the top of the page
 
+Quote Post
hwk
post Mar 27 2009, 11:07 AM
Post #3


Veteran
**

Group: Members
Posts: 211
Joined: 14-June 07
Member No.: 66,502



really? so we've to check Nm(kg-m)/rpm?

Nm/rpm
-174@4300
-190@4200
-189@4300
-182@4000
-170@4200

which more powerful? like pick-up...
Go to the top of the page
 
+Quote Post
Itchibawa
post Mar 27 2009, 12:05 PM
Post #4


Fast & Furious
***

Group: Members
Posts: 2,384
Joined: 14-May 04
Member No.: 36,470



PS = hp in metric system

1PS = 0.986 hp

The difference is too small to be of any significance.

In normal daily driving, when the engine typically rev in the low to mid rpm range, torque is more important than hp/ps.

A dynograph is more useful than a quote of max hp.
Go to the top of the page
 
+Quote Post
hwk
post Mar 27 2009, 01:36 PM
Post #5


Veteran
**

Group: Members
Posts: 211
Joined: 14-June 07
Member No.: 66,502



so if...

altis 1.6 = 145@4400
city 1.5 = 145@4800

or

stream 1.8 = 174@4300
accord 2.0 = 189@4300
civic 1.8 = 174@4300

just want to know how to compare smile_blush.gif
Go to the top of the page
 
+Quote Post
darreltian
post Mar 27 2009, 01:55 PM
Post #6


Tokyo Drifter
***

Group: Members
Posts: 4,823
Joined: 23-September 08
From: KL
Member No.: 75,599



other than the mentioned above, u need to consider also weight, gear ratio, wind drag coefficient to name a few...
Go to the top of the page
 
+Quote Post
Itchibawa
post Mar 27 2009, 04:06 PM
Post #7


Fast & Furious
***

Group: Members
Posts: 2,384
Joined: 14-May 04
Member No.: 36,470



QUOTE (hwk @ Mar 27 2009, 01:36 PM) *
so if...

altis 1.6 = 145@4400
city 1.5 = 145@4800


The only thing you can derive from this is the specific output of the engines, ie, the power output per 1000cc (or 1L);

The Altis 1.6L engine's specific output = 1.0/1.6 x 145 = 90.63PS/L

The City 1.5L engine's specific output = 1.0/1.5 x 145 = 96.7PS/L

So the smaller City's engine has a higher specific output as compared to the Altis.

QUOTE (hwk @ Mar 27 2009, 01:36 PM) *
or

stream 1.8 = 174@4300
accord 2.0 = 189@4300
civic 1.8 = 174@4300

just want to know how to compare smile_blush.gif


The same with these sets of figures;

The Stream 1.8 and the Civic 1.8L share the same R18 engine. So they have the same PS rating;

1.0/1.8 x 174 = 96.7 PS/L

As for the Accord, 1.0/2.0 x 189 = 94.5PS/L


These figures will not tell you how well the car will perform, as the weight of the car is not known and factored in.

In the other words, the more important power-to-weight ratio is not known.

For example;

The Civic weigh about 1.2 tonnes, while the Stream weigh about 1.5 tonnes.

So the power-to-weight ratio per tonne, 1000kg is;

Civic, 1.0/1.2 x 174 = 144.99PS/ton

Stream, 1.0/1.5 x 174 = 115.99PS/ton

Therefore, although the two cars have the same specific output, the Civic has a better power-to-weight ratio.

So, obviously the Civic will perform better than the Stream on the road.
Go to the top of the page
 
+Quote Post
hwk
post Mar 27 2009, 04:19 PM
Post #8


Veteran
**

Group: Members
Posts: 211
Joined: 14-June 07
Member No.: 66,502



thanks for reply, so is that mean city more powerful than altis 1.6, and civic 1.8 better than accord 2.0?
Go to the top of the page
 
+Quote Post
Itchibawa
post Mar 27 2009, 04:35 PM
Post #9


Fast & Furious
***

Group: Members
Posts: 2,384
Joined: 14-May 04
Member No.: 36,470



QUOTE (hwk @ Mar 27 2009, 04:19 PM) *
thanks for reply, so is that mean city more powerful than altis 1.6, and civic 1.8 better than accord 2.0?


Yes.

Civic/Stream and City have the same specific output and tie for first.

Accord came in second and Altis last.


I editted my post after you read it to include power-to-weight ratio.

Please read it again to the end.
Go to the top of the page
 
+Quote Post
hwk
post Mar 27 2009, 04:44 PM
Post #10


Veteran
**

Group: Members
Posts: 211
Joined: 14-June 07
Member No.: 66,502



QUOTE (Itchibawa @ Mar 27 2009, 04:35 PM) *
Yes.

Civic/Stream and City have the same specific output and tie for first.

Accord came in second and Altis last.


I editted my post after you read it to include power-to-weight ratio.

Please read it again to the end.


that i know smile_approve.gif so how to compare stream 1.8 with accord 2.0 cos the weight show kg
Go to the top of the page
 
+Quote Post

3 Pages V   1 2 3 >
Reply to this topicStart new topic

 





RSS Lo-Fi Version  |  Powered By IP.Board © 2008  IPS, Inc Time is now: 2nd August 2014 - 08:23 AM