Four-cylinder gasoline engine cylinder deactivation control system

Abstract

The invention provides a four-cylinder gasoline engine cylinder deactivation control system for controlling the work of a first cylinder, a second cylinder, a third cylinder and a fourth cylinder of afour-cylinder gasoline engine for a vehicle. The system comprises two pressure stabilizing chambers which comprises a first pressure stabilizing chamber which is arranged at the air inlet sides of the first cylinder and the fourth cylinder and a second pressure stabilizing chamber which is arranged above the second cylinder and the third cylinder, four air inlet manifolds, two throttle bodies including a first throttle body installed on the first pressure stabilizing chamber and a second throttle body installed on the second pressure stabilizing chamber, a 4-2-1 exhaust pipe which comprises four exhaust manifolds, a first exhaust branch pipe at the joint of two exhaust manifolds, a second exhaust branch pipe at the joint of the other two exhaust manifolds and a master pipe at the joint ofthe two exhaust branch pipes, an electric control gas valve whose outlet end is connected to the second exhaust branch pipe, a ternary catalytic converter connected to the master pipe, and a bypass pipe connected to an outlet end of the electric control gas valve, wherein each of the air inlet manifolds is connected to one side of a cylinder, and each of the four exhaust manifolds is connected tothe other side of a cylinder.

Description

technical field [0001] The invention belongs to the technical field of cylinder deactivation of gasoline engines for vehicles, and in particular relates to a cylinder deactivation control system of a four-cylinder gasoline engine. Background technique [0002] Energy shortage and climate warming have become global problems. Improving the efficiency of automobile engines and reducing emissions are the only way for the sustainable development of traditional internal combustion engine vehicles. Generally speaking, in order to ensure the power performance of the car under various extreme conditions, such as full-load climbing and fast overtaking, the displacement of the car engine needs to be made large enough. However, in most working conditions, such as urban driving conditions, the power demand of the car is far less than the maximum power that the engine can provide, and there is a situation of "big horses and small cars", which is not conducive to the improvement of vehicle...

AI Technical Summary

Problems solved by technology

As the engine load further decreases, the throttle opening is small, and the delayed closing of the intake valve has little effect on reducing the net air intake of the cylinder, and the Atkinson cycle has no effect on reducing the pumping loss

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