The two-stroke () engine was very popular throughout the 20th century in motorcycles and small-engined devices, such as and . They were also used in some cars such as the and , a few tractors and many ships. Part of their appeal was their simple design (and resulting low cost) and often high . The lower cost to rebuild and maintain made the two stroke engine very popular, until for the USA their EPA mandated more stringent emission controls in 1978 (taking effect in 1980) and in 2004 (taking effect in 2005 and 2010). The industry largely responded by switching to four-stroke petrol engines, which emit less pollution. Most small designs use ()) lubrication, with the oil being burned in the combustion chamber, causing "blue smoke" and other types of exhaust pollution. This is a major reason why two-stroke engines were replaced by four-stroke engines in many applications.
There are two main types of exhaust fans - axial fans and centrifugal fans. Axial fans, usually resembling propellers, draw air straight through the fan. Centrifugal fans, resembling squirrel cages, draw air into the center of the fan and exhaust it at a 90-degree angle. illustrates the different types of fans.
The classic Ford Mustang seems to growl from its exhaust system even as it idles at a red light. While exhaust systems sound impressive, they go beyond mere style enhancements to increase torque, horsepower,...
As the name suggests these are the ones installed outside your homes which pulls air outwards. These are some of the commonest types of exhaust fans and are suited for those who would prefer to have noisy exhaust fans outside their house. A Bajaj exhaust fan comes for around Rs.999.
Let me tell you about a few of the types of exhaust fans in the market and you can choose one that could work best for you. And it won’t be a bit too early. After all summer is here!