Reducing CO2 Emissions from Port Injected Gasoline Engines Using Novel Micro-Superchargers and Fuel-Air Mixing Technologies

2012 ◽  
Author(s):  
Paul Wilkinson ◽  
Roger Kennedy
Keyword(s):  
Co2 Emissions ◽  
Gasoline Engines ◽  
Air Mixing

Potentials and Limits of CO2 Emissions of Gasoline Engines

MTZ worldwide ◽  
2012 ◽  
Vol 73 (5) ◽  
pp. 44-49
Author(s):  
Rudolf Flierl ◽  
Frederic Lauer ◽  
Stephan Schmitt ◽  
Ulrich Spicher
Keyword(s):  
Co2 Emissions ◽  
Gasoline Engines

Light Weight Pistons for Friction Optimized Spark Ignition Engines

2014 ◽  
Author(s):  
Dieter Gabriel ◽  
Jochen Adelmann ◽  
Thomas Hettich ◽  
Andreas Hammen
Keyword(s):  
Co2 Emissions ◽  
Spark Ignition ◽  
Design Concept ◽  
Design Approach ◽  
Light Weight ◽  
Spark Ignition Engines ◽  
Gasoline Engines ◽  
Highly Efficient ◽  
Low Co2

This article describes the development of MAHLE piston technology with the goal of meeting increasing requirements of advanced, highly efficient gasoline engines. The new EVOLITE® lightweight piston from MAHLE is a continuation of the development of its predecessor, the EVOTEC® 2, and is based on the EVOTEC® design concept. This concept differs from the design approach of previous decades in that the piston geometry has inverted asymmetry on the thrust and antithrust side. A narrow thrust side is combined with a wide, elastic antithrust side for skirt guidance. The light, robust EVOTEC® 2 piston is available with ring carrier or cooling gallery - Figure 1. The EVOLITE® concept represents further refinement of the EVOTEC® design concept by increasing asymmetry further. By geometrically optimizing the box wall connection between the skirt and crown, the lifetime has been increased by up to 8 times in comparison with the EVOTEC® 2, depending on stress location, while the weight has been reduced by up to 5%. Friction, which is critical for low CO2 emissions, is also reduced with this new piston type.

The Spray Structure of Air-Shrouded Dual-Stream Port Fuel Injectors With Different Air-Mixing Mechanisms

1998 ◽  
Vol 120 (1) ◽  
pp. 217-224
Author(s):  
F.-Q. Zhao ◽  
J.-H. Yoo ◽  
M.-C. Lai
Keyword(s):  
Mie Scattering ◽  
Spray Atomization ◽  
Spray Parameters ◽  
Radial Velocity Component ◽  
Fuel Injectors ◽  
Gasoline Engines ◽  
Spray Structure ◽  
Planar Laser ◽  
Air Mixing ◽  
Atomization Characteristics

An experimental study of the spray structure from air-shrouded dual-stream injectors with different air mixing mechanisms was carried out extensively to understand the spray characteristics of dual-stream port injectors for applications to four-valve gasoline engines. The injectors were tested under both steady and transient conditions at different injection pressures and air shrouding pressure differentials. The global spray structure was visualized using the planar laser Mie scattering technique and spray atomization processes were characterized by the phase-Doppler anemometry method. The experimental results showed that spray atomization characteristics are improved markedly by the air-shrouding technique and also strongly dominated by the air-mixing mechanisms. When the air flows into the injector tip mainly from the radial direction, two streams of the spray are forced to merge together and as a result a single-stream spray is formed. When the radial velocity component of the air is reduced and the air is made to mix well with the fuel inside the injector tip, however, the two streams of the spray are well separated over different injection conditions. Moreover, other spray parameters are also modified by the air shrouded into the injector, which must be optimized in order to achieve the best performance of the air-shrouded injector.

Potentials and Limits of CO2 Emissions of Gasoline Engines Part I: Mechanic Techniques

MTZ worldwide ◽  
2012 ◽  
Vol 73 (4) ◽  
pp. 28-33
Author(s):  
Rudolf Flierl ◽  
Frederic Lauer ◽  
Stephan Schmitt ◽  
Ulrich Spicher
Keyword(s):  
Co2 Emissions ◽  
Gasoline Engines

Governing Gas and Gasoline Engines

1903 ◽  
Vol 56 (1458supp) ◽  
pp. 23369-23369
Author(s):  
Dugald Clerk
Keyword(s):  
Gasoline Engines

Development of thickened semi-synthetic engine oil M-5z / 20 AERO for four-stroke gasoline engines aircraft piston of unmanned aerial vehicles (UAVs)

2020 ◽  
Vol 06 ◽  
pp. 44-47
Author(s):  
A.A. Moykin ◽  
◽  
A.S. Medzhibovsky ◽  
S.A. Kriushin ◽  
M.V. Seleznev ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Engine Oil ◽  
Motor Oil ◽  
Gasoline Engines ◽  
State Research Institute ◽  
Technical Requirements ◽  
Aerial Vehicles ◽  
State Research ◽  
Industrial Batch ◽  
The Russian Federation

Nowadays, the creation of remotely-piloted aerial vehicles for various purposes is regarded as one of the most relevant and promising trends of aircraft development. FAU "25 State Research Institute of Chemmotology of the Ministry of Defense of the Russian Federation" have studied the operation features of aircraft piston engines and developed technical requirements for motor oil for piston four-stroke UAV engines, as well as a new engine oil M-5z/20 AERO in cooperation with NPP KVALITET, LLC. Based on the complex of qualification tests, the stated operational properties of the experimental-industrial batch of M-5z/20 AERO oil are generally confirmed.

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