Menu
Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Forums
Cattle Boards
Trucks, Tractors & Machinery
Diesel Trucks
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support CattleToday:
Message
<blockquote data-quote="Saltydawg" data-source="post: 156048" data-attributes="member: 2944"><p>Torque can be measured at the crankshaft of an engine. You can hook a scale to the output shaft of an engine and physically measure how hard its pulling...this is torque.</p><p></p><p> Horsepower is a computed number. It is a measure of the ammount of work done over a period of time...more hp = more work done.</p><p></p><p> Horsepower = torque * rpm/5252</p><p></p><p> From the formula you can see that the higher an engine rev's the more horsepower it will make...provided the torque numbers stay the same.</p><p></p><p> The biggest difference between diesel engines and gas engines is the compression ratios used in the motors.</p><p></p><p> Gas engines typically run a 8:1 - 10:1 compression ratio.</p><p></p><p> Diesels run 17:1 - 21:1.</p><p></p><p> Diesel engines "squish" the fuel mixture more so when it lights off you get a bigger bang. More power per pound of fuel being burnt...which is why diesels give better mpg when compared to similar powered gas motors.</p><p></p><p> The tradeoff is that in order to handle these higher compression ratios the deisel engine parts need to be physically more robust...they are heavier and bigger.</p><p> Because of this extra weight, throughout basically every engine component, the diesel cannot run at the high rpm's a gas motor can.</p><p></p><p> Gas motors can run at very high rpm's, and make gobs of horsepower, but this leads to poor fuel economy and lots of engine wear.</p><p></p><p> This is the biggest reason why Diesel engines last so much longer. The parts are built heavier from the start and they run at a much lower rpm.</p><p></p><p> Gas motors are perfectly capable of towing anything a diesel can given similar sized motors....its just the gas motor will get less fuel economy and wear out faster because it needs to run at a higher rpm level.</p><p></p><p> Occasional towing a gas motor is fine and it also allows you to accelerate a lot faster when you arent loaded. Nicer for daily driving IMO.</p><p></p><p> For heavy towing and just plain durability...you can't beat a well made diesel.</p></blockquote><p></p>
[QUOTE="Saltydawg, post: 156048, member: 2944"] Torque can be measured at the crankshaft of an engine. You can hook a scale to the output shaft of an engine and physically measure how hard its pulling...this is torque. Horsepower is a computed number. It is a measure of the ammount of work done over a period of time...more hp = more work done. Horsepower = torque * rpm/5252 From the formula you can see that the higher an engine rev's the more horsepower it will make...provided the torque numbers stay the same. The biggest difference between diesel engines and gas engines is the compression ratios used in the motors. Gas engines typically run a 8:1 - 10:1 compression ratio. Diesels run 17:1 - 21:1. Diesel engines "squish" the fuel mixture more so when it lights off you get a bigger bang. More power per pound of fuel being burnt...which is why diesels give better mpg when compared to similar powered gas motors. The tradeoff is that in order to handle these higher compression ratios the deisel engine parts need to be physically more robust...they are heavier and bigger. Because of this extra weight, throughout basically every engine component, the diesel cannot run at the high rpm's a gas motor can. Gas motors can run at very high rpm's, and make gobs of horsepower, but this leads to poor fuel economy and lots of engine wear. This is the biggest reason why Diesel engines last so much longer. The parts are built heavier from the start and they run at a much lower rpm. Gas motors are perfectly capable of towing anything a diesel can given similar sized motors....its just the gas motor will get less fuel economy and wear out faster because it needs to run at a higher rpm level. Occasional towing a gas motor is fine and it also allows you to accelerate a lot faster when you arent loaded. Nicer for daily driving IMO. For heavy towing and just plain durability...you can't beat a well made diesel. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cattle Boards
Trucks, Tractors & Machinery
Diesel Trucks
Top