Performance improvement and emission reduction of gasoline engine by adding hydrogen gas into the intake manifold

2021 ◽  
Author(s):  
Wail M. Adaileh ◽  
Khaled S. AlQdah
Keyword(s):  
Performance Improvement ◽  
Emission Reduction ◽  
Gasoline Engine ◽  
Hydrogen Gas ◽  
Intake Manifold

The Research of Lean Combustion Characteristic of Compound Injection System of Direct Injection Engine

2014 ◽  
Vol 532 ◽  
pp. 362-366 ◽  
Author(s):  
Jiang Feng Mou ◽  
Rui Qing Chen ◽  
Yi Wei Lu
Keyword(s):  
Gasoline Engine ◽  
Direct Injection ◽  
Injection System ◽  
Intake Manifold ◽  
Combustion Characteristic ◽  
Injection Timing ◽  
Mixed Gas ◽  
Lean Burn ◽  
Direct Injection Engine ◽  
Lean Combustion

This paper studies the lean burn limit characteristic of the compound injection system of the direct-injection gasoline engine. The low pressure nozzle on the intake manifold can achieve quality homogeneous lean mixture, and the direct injection in the cylinder can realized the dense mixture gas near the spark plug. By adjusting the two injection timing and injection quantity, and a strong intake tumble flow with special shaped combustion chamber, it can produces the reverse tumble to form different hierarchical levels of mixed gas in the cylinder. Experimental results show: the compound combustion system to the original direct-injection engine lean burn limit raise 1.8-2.5 AFR unit.

Replication of Microscale Features via Investment Casting Using the Example of an Aluminium Intake Manifold of a Gasoline Engine with an Inner Technical Shark Skin Surface

2009 ◽  
Vol 618-619 ◽  
pp. 581-584
Author(s):  
Todor Ivanov ◽  
Andreas Bührig-Polaczek ◽  
Uwe Vroomen
Keyword(s):  
Investment Casting ◽  
Gasoline Engine ◽  
Casting Process ◽  
Skin Surface ◽  
Micro Milling ◽  
Intake Manifold ◽  
Shark Skin ◽  
Functional Surfaces ◽  
Wax Pattern ◽  
Investment Casting Process

Within the project “Functional Surfaces via Micro- and Nanoscaled Structures” an investment casting process to produce 3-dimensional functional surfaces down to a structural size of 1µm on near-net-shape-casting parts will be developed. The common way to realise functional microscale features on metallic surfaces is to use laser ablation, electro discharge machining or micro milling. The handicap of these processes is their limited productivity. In order to raise the efficiency, microscale features will be replicated by use of the investment casting process. The main research objective deals with the investigation of the single process steps with regard to the moulding accuracy. Actual results concerning making of the wax pattern and the ceramic mould as well as the casting of an Aluminium alloy will be presented. By using the example of an intake manifold of a gasoline race car engine a technical shark skin surface was defined in order to reduce the drag of the in-coming air. Possible process stategies to realise microscale features on an inner surface of a casting part were developed.

scholarly journals Design of nonlinear hierarchical controller for intake manifold pressure and boost pressure of turbocharged gasoline engine

2020 ◽  
Vol 82 (1/2/3/4) ◽  
pp. 161
Author(s):  
Yunfeng Hu ◽  
Yaohan Wang ◽  
Jinwu Gao ◽  
Xun Gong ◽  
Zhiguo Tang ◽  
...  
Keyword(s):  
Gasoline Engine ◽  
Intake Manifold ◽  
Boost Pressure ◽  
Intake Manifold Pressure
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