PROBLEM 2:The brake thermal efficiency of a diesel engine is 30 percent. If the air to fuel ratio by weight is 20 and thecalorific value of the fuel used is 41800 ki/kg, what brake mean effective pressure may be expected atS.T.P. conditions (Standard Temperature and pressure means 15.6°C and 101.325 kPa, respectively)?

Given:brake thermal efficiency=30 percentair to fuel ratio by weight=20calorific value=41800…

PROBLEM 2: The brake thermal efficiency of a diesel engine is 30 percent. If the air to fuel ratio by weight is 20 and the calorific value of the fuel used is 41800 kig, what brake mean effective pressure may be expected at ST.P. conditions (Standard Temperature and pressure means 15.6°C and 101.325 kPa, respectively)?

PROBLEM 2: The brake thermal efficiency of a diesel engine is 30 percent. If the air to fuel ratio by weight is 20 and the calorific value of the fuel used is 41800 kig, what brake mean effective pressure may be expected at ST.P. conditions (Standard Temperature and pressure means 15.6°C and 101.325 kPa, respectively)?

Automotive Technology: A Systems Approach (MindTap Course List)

6th Edition

ISBN:9781133612315

Author:Jack Erjavec, Rob Thompson

Publisher:Jack Erjavec, Rob Thompson

Chapter33: Emission Control Systems

Section: Chapter Questions

Problem 1RQ: Explain why a small PCV valve opening is adequate at idle speed.

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