What are turbochargers? Complete Guide

  1. profile image56
    princelandposted 9 years ago

    What are turbochargers? Complete Guide

  2. Sasha S profile image68
    Sasha Sposted 9 years ago

    A turbocharger is a device fitted in various machines (namely cars) with either forced-induction or internal combustion engines that takes the exhaust gasses from the engine and passes them through a turbine that spins at roughly 100,000 rpm and is used to drive an air compressor. The compressor compresses air to a pressure greater than that of the atmosphere so a larger mass of air passes into the engine - allowing for more fuel to be injected - causing a greater force to be produced in the combustion stroke of the engine's cycle (assuming a 4-stroke engine), so more power is produced.

    The critical value with engines is termed the stoichiometric ratio (the correct chemical balance between any two substances - in this case air and fuel). Using cars as an example: In petrol engines the accelerator pedal controls a throttle (rotating valve - when the pedal's fully down the valve is fully open) in the air intake pipe; this is combined with a petrol injection system that injects the appropriate amount of petrol to achieve the stoichiometric ratio as combustion will only take place at roughly this ratio. Hence, more air being allowed into the engine (at a higher pressure) means more petrol can be injected so a more powerful combustion takes place in the cylinders increasing the power output. With diesel engines the air intake is constant (increased with the air pressure) while the accelerator pedal controls the diesel injection and is configured so that when fully depressed the stoichiometric ratio is attained. (Diesel engines do not require a stoichiometric ratio to achieve combustion, however, maximum efficiency is achieved when it's attained).

    The alternative to turbocharging an engine is to supercharge it - a much older method that's been used since the 1880's! A supercharger is a form air pump / compressor that’s mechanically driven by the engine (i.e. either directly or indirectly joined to the crank shaft) and preforms the same function as the compressor does in a turbocharger.

    Supercharging, despite increasing the performance at all engine speeds, runs the compressor directly off the engine and hence also decreases its brake thermal efficiency. Turbo charging, on the other hand, is used to boost the performance of the engine at higher speeds only (at lower speeds, the turbine doesn’t spin as fast so it has little effect on the power), and, because it uses exhaust gasses which would otherwise just be wasted, it has very little effect on the engine’s efficiency and produces more power than a supercharger when the engine’s running at the same speed.

    I wouldn't say it's a complete guide, however, it's a start and should give you a good overview of what turbocharging (and supercharging) is all about. Hope it was of use - I'm sure there's plenty more lurking around the internet somewhere on it but feel free to ask if you need clarification on anything!

 
working

This website uses cookies

As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

Show Details
Necessary
HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
LoginThis is necessary to sign in to the HubPages Service.
Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
AkismetThis is used to detect comment spam. (Privacy Policy)
HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
Features
Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Marketing
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Statistics
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)