Design and control of automotive propulsion systems by Zongxuan Sun, Guoming G. Zhu

By Zongxuan Sun, Guoming G. Zhu

"This publication provides analytical and experimental equipment and achievements in designing mechanical and mechatronic driveline structures. Examples contain a number of energy dividing devices, together with symmetric and non-symmetric kinds, in addition to open and lockable differentials, quite a few restricted slip differentials, no spins, and viscous clutches. The textual content offers common sense regulate algorithms used to manage car power Read more...

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There are mainly three different arrangements for the valve actuation system. The direct acting system has the cam lobe in contact with the follower and the engine valve in a vertical arrangement. The roller finger follower system uses a lever to actuate the valve, and the cam lobe is in contact with a roller that is mounted on the lever between the valve and the pivoting point. The pushrod system installs the camshaft in the valley of the engine and uses a pushrod to actuate the valve through a lever.

1, the combustion phase starts from ST and ends with EVO. The gas exchange process from EVO to IVC and the compression process from IVC to ST are also important to the combustion process, since the gas-fuel mixture is prepared during these two phases. EVO to IVO: After the exhaust valve is opened, the in-cylinder gas entropically expands in the engine cylinder, exhaust ports, and manifold, and this is called the gas exhaust phase. 12) where θi is the current crank position. 13) where T(θEVO) and P(θEVO) are the temperature and pressure at the crank position of exhaust valve closing, and they can be derived from the combustion phase.

The injection pulse width (duration) was set to correspond to lambda equal to 1 (stoichiometric) condition. These images were recorded within an i­ njection cycle at different crank degrees. It is worth mentioning that the injector driver has 1 ms precharge delay, and so it corresponded to the delay of either 9 CAD/ms (at 1500 rpm) or 15 CAD/ms (at 2500 rpm) before the fuel spray was observed at the top of the cylinder. 22. 5° BTDC, where the initial portion of the spray entering the cylinder was found to be about the same for all three sprays.

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