compression stroke

[kəm′presh·ən ‚strōk]

(mechanical engineering)

The phase of a positive displacement engine or compressor in which the motion of the piston compresses the fluid trapped in the cylinder.

References in periodicals archive ?

At low load, the inlet valves remain open almost to the end of the compression stroke, which reduces losses, and at high loads, the inlet valves close at the beginning of the compression stroke.

Russian Federation : Hyundai will adjust the valves on the go

When the vehicle is maintaining a constant speed and requires low engine output, CVVD opens the intake valve from the middle to end of the compression stroke. This helps to improve fuel efficiency by reducing the resistance caused by compression, said the statement from Hyundai.

Hyundai unveils first CVVD engine technology for vehicles

A critical issue in such methodologies is the description of the flow structure decay during the compression stroke, due to the shear stresses.

A Refined OD Turbulence Model to Predict Tumble and Turbulence in SI Engines

This study explores the ability to use a high compression ratio GDI engine and open the exhaust valve at the end of the compression stroke immediately before fuel injection to bleed off pressure.

Computational Fluid Dynamic Simulation of In-Cylinder Pressures to Validate High-Range VCR

Finally, momentum in the crankshaft drives the piston back up for a compression stroke, and new air and fuel fill the crankcase from the carburetor.

using the two-stroke engine to develop technological literacy

Through the intake stroke and early part of the compression stroke, the particle temperatures drop, consistent with the heat transfer to the much cooler fuel-air mixture for an intake air temperature of 20[degrees]C.

Impact of Particle Characteristics and Engine Conditions on Deposit-Induced Pre-Ignition and Superknock in Turbocharged Gasoline Engines

The upgraded fuel can withstand a greater rise in temperature during the compression stroke of an internal combustion engine without auto-igniting.

DESI FUEL FOR HIGH END VEHICLES

When in the compression stroke, the process is a little more complicated and the flow process can be divided into two parts:

Design, Modeling, and Analysis of a Novel Hydraulic Energy-Regenerative Shock Absorber for Vehicle Suspension

In consideration of the relationship between the velocity of midpoint and the resulting TDC position that is close to linear correlation [7], this paper proposes a combustion optimization control strategy which varies the electromagnetic resistance force based on the velocity of midpoint(the half-stroke point in the compression stroke), and the block diagram for control logics is shown as Fig.

Investigation of combustion optimization control strategy for stable operation of linear internal combustion engine-linear generator integrated system

Then there is a compression stroke that presses the resin through the preform so that it is entirely saturated.

Composite body panel system in production

In figure 1A, the piston is at the end of the suction stroke about to start compression and in figure IB, the compression stroke has just been completed.

My bright idea ... engineer Michael Crowley discusses an isothermal compression method that could reduce the power needed to compress gases

During the compression stroke of a spark ignition engine the pressure, density, and temperature are increased.

Catastrophic destruction

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