List four distinct engine sensor inputs commonly used for co

List four distinct engine sensor inputs commonly used for control of engine operation. 14) List four distinct engine controls (adjustments) that may be done by the engine control unit in response to sensor inputs. 15) True or False. Flame speed decreases with a rich mixture. 16) What is the primaiy use of a divided combustion chamber for SI engines? 17) What is reverse blowby? Also, why is this undesirable? 18) Whaty are two major causes of variations in power from cycle-to-cycle?

Solution

13) thermistor , potentiometer, voltage generator , magnetic pickup and switch

14) voltage regulator, micro computer, self diagnosis, diagnostic request

15) true

a lean mixture releases less thermal energy, and hence a lower flame temperature; while a rich mixture leads to

incomplete combustion, and hence a release of less thermal energy

16) The purpose of the divided combustion chamber is to speed up the combustion process, in order to increase the power output by increasing engine speed

The primary function of the combustion section is to bum the fuel-air mixture, thereby adding heat energy to the air. To do this efficiently, the combustion chamber must —

17) Reverse blowby is a gas that is blown back into combustion chamber which is heavily dependent on engine design

blowby is an undesirable operation scenario for pressure vessels and phase separator vessels. In case of a gas blowby, the liquid is completely drained from the vessel thus gas flow from the pressure vessel can freely flow to the downstream equipments which are designed to handle liquid. This may result into overpressure in the downstream equipments.

18) climate change and electric charges