Mazda CX-5 Service & Repair Manual: Exhaust Manifold
Purpose, Function
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By lengthening the exhaust passage, the transmission of exhaust pressure waves to other cylinders can be delayed, and the amount of gas exhausted from a cylinder and forced back inside the combustion chamber is reduced By reducing the residual gas, the temperature inside the combustion chamber is reduced and the occurrence of knocking even at a high compression ratio is inhibited.
Construction
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The exhaust manifold is installed to the rear of the engine. In addition, the catalytic converter (WU-TWC) is integrated (WU-TWC).
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When the No.1 cylinder is at the intake stroke, the No.3 cylinder is at the exhaust stroke. By inducing the high temperature gas exhausted from the No.3 cylinder into the No.1 cylinder, the high temperature gas in the No.1 cylinder remains. If the amount of residual gas is high, the temperature in the combustion chamber rises and knocking can easily occur. With the 4-2-1 exhaust system, the transmission of exhaust pressure waves between each cylinder is delayed by the long exhaust pipes.
Exhaust System Removal/Installation
WARNING:
A hot engine and exhaust system can cause severe burns. Turn off the engine
and wait until they are cool before removing the exhaust system.
2WD
1. Disconnect the negative b ...
Other materials:
Front Body Straight Line Dimensions (2) [Dimensions]
Point symbol
Designation
Hole diameter or bolt or nut size mm {in}
A
Roof seamless location
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B
Cabin side outer frame (front pillar outer) projection location
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...
Water Pump Removal/Installation
WARNING:
Never remove the cooling system cap or loosen the radiator drain plug while
the engine is running, or when the engine and radiator are hot. Scalding engine
coolant and steam may shoot out and cause serious injury. It may also damage
the engine and cooling system.
Tu ...
Miller Cycle Engine
Outline
The Miller cycle engine is a high-efficiency engine which achieves high fuel
economy performance by obtaining a high-expansion ratio.
The Miller cycle engine achieves a high-expansion ratio without increasing
its effective compression ratio by retarding the intake air va ...
