Download Modifying and Tuning Fiat Lancia Twin-Cam Engines (Technical by Guy Croft PDF

By Guy Croft

Show description

Read or Download Modifying and Tuning Fiat Lancia Twin-Cam Engines (Technical (Including Tuning & Modifying)) PDF

Similar repair & maintenance books

English Auxiliaries: Structure and History

Auxiliaries are essentially the most advanced components of English syntax. war of words over either the foundations and info in their grammar has been large. Anthony Warner the following bargains an in depth account of either their synchronic and diachronic houses. He first argues that lexical homes are valuable to their grammar, that is particularly non-abstract.

David Vizard's How to Port & Flow Test Cylinder Heads

Writer Vizard covers mixing the bowls, easy porting techniques, in addition to pocket porting, porting the consumption runners, and plenty of complicated tactics. complicated systems contain unshrouding valves and constructing the right port region and perspective.

Additional info for Modifying and Tuning Fiat Lancia Twin-Cam Engines (Technical (Including Tuning & Modifying))

Example text

3 The Three-Valve Indirect-Injection (IDI) Engine This engine design typifies the other fuel-heating option of high-speed in-cylinder airflow and the slower moving fuel created by lower pressure fuel injection systems. Here, the fuel injection line pressure is nornally in the range of 150 to 300 atm. The basic layout of the engine type is shown in Fig. 8. 6] and is known as a Comet chamber. This is described as indirect injection, abbreviated as IDI, and is still widely employed in European diesel automobiles.

Overdoing this effect can actually send fuel-laced air into the exhaust pipe, which will ultimately appear in the atmosphere as an excess of unburned hydrocarbon emissions. Hence, based on these preliminary remarks, the design process for the engine during the valve overlap period is surely seen as a critical affair. But I get ahead of myselfbecause this and many other similar subjects, such as the effectiveness of intake ramming behind a still-open intake valve on the compression stroke, are really what the rest of this book is all about!

The exhaust poppet valve is actuated by a well-timed turn of the rotating cam, which depresses the tappet and compresses the valve spring and lifts the valve. The exhaust valve ideally opens at bdc, lifts to a maximum value at about mid-stroke, and ideally shuts again at tdc. The exhaust gas is forcibly expelled by the upward sweeping movement ofthe piston through the aperture created by the annulus around the head of the lifted exhaust valve. , from Vb& to Vtdc. Using the human body again as an analogy, the exhaust stroke is somewhat similar to you filling your lungs with air and opening your mouth, thereby letting your lungs decrease in volume with the exhalation; you then close your mouth again.

Download PDF sample

Rated 4.63 of 5 – based on 36 votes