Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
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Computer simulation of piston-piston ring—cylinder liner coactions in combustion engines
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering - Tập 218 Số 12 - Trang 1491-1501 - 2004
The aim of the numerical simulations presented in this paper was the calculation
of the loads of the work process between elements of the ring seal components of
the diesel engine. In this engine a sealing piston ring with an antiwear ceramic
cover was developed. A computer simulation, which as model loads uses program
KIVA3 for combustion engine work process computations, has been developed in
th...
Modelling and optimizing two- and four-stroke hybrid pneumatic engines
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering - Tập 223 Số 2 - Trang 255-280 - 2009
Hybrid pneumatic engines, which are designed to follow the downsizing and
supercharging paradigm, offer a fuel-saving potential that is almost equal to
that of hybrid electric powertrains while inducing much lower additional mass
and cost penalties. This paper presents a systematic optimization of the
operation of such an engine system. Both two-stroke and four-stroke modes are
analysed. The optim...
Control of noise in the passenger compartment of the bus due to structural vibration
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering -
The design of the chassis with an appropriate structure is thought to be an
efficient way for decreasing vibration and noise since chassis vibration is one
of the key causes that generates noise in the bus passenger compartment. This
study uses the Frequency Response Function Method (FRFM) and Modal Participation
Method (MPM) to analyze an acoustic finite element model of a bus frame model
THACO T...
Sound transmission modeling and numerical analysis for automotive seal considering non-uniform compression
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering - Tập 233 Số 3 - Trang 471-483 - 2019
Automotive metal door panels and nonmetallic seals have complicated nonlinear
interactions in their narrow mating sections, leading to non-uniform compression
and complicating the sound transmission mechanism. Therefore, a new sound
transmission modeling methodology and numerical analysis is developed for a
refined sealing system by considering the geometrical boundaries and the
non-uniform compre...
Automotive aeroacoustics: An overview
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering - Tập 231 Số 9 - Trang 1177-1189 - 2017
Vehicle aeroacoustic performance has a major influence on customer perception
and also has importance for safety and comfort. Wind noise performance was once
differentiated by the quality of sealing. Today, achieving competitive wind
noise performance also depends on minimising aeroacoustic noise sources
generated by the vehicle form, and on attenuation in the noise pathway from
sources on the ext...
Integrating battery degradation in a cost of ownership framework for hybrid electric vehicle design optimization
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering - Tập 233 Số 6 - Trang 1507-1523 - 2019
Prior design optimization efforts do not capture the impact of battery
degradation and replacement on the total cost of ownership, even though the
battery is the most expensive and least robust powertrain component. A novel,
comprehensive framework is presented for model-based parametric optimization of
hybrid electric vehicle powertrains, while accounting for the degradation of the
electric batte...
MPC for vehicle lateral stability via differential braking and active front steering considering practical aspects
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering - Tập 230 Số 4 - Trang 459-469 - 2016
This paper presents a control architecture that simultaneously utilizes active
front steering (AFS) and differential braking for vehicle lateral stability
while minimizing longitudinal perturbations. This control scheme is based on the
model predictive control (MPC) using the extended bicycle model that captures
the lagged characteristics of tire forces and actuators. The nonlinearities of
tire fo...
A study on the injection characteristics of a liquid-phase liquefied petroleum gas injector for air-fuel ratio control
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering - Tập 219 Số 8 - Trang 1037-1046 - 2005
Liquefied petroleum gas (LPG) is widely used as a gaseous fuel in spark ignition
engines because of its considerable advantages over gasoline. However, the LPG
engine suffers a torque loss because the vapour-phase LPG displaces a larger
volume of air than do gasoline droplets. In order to improve engine power as
well as fuel consumption and air-fuel ratio control, considerable research has
been de...
Speciated hydrocarbon emissions from a gas-fuelled spark-ignition engine with various operating parameters
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering - Tập 214 Số 7 - Trang 795-808 - 2000
For natural gas and liquefied petroleum gas (LPG), measurements of the
concentrations of individual exhaust hydrocarbon (HC) species have been made
under various engine operating conditions in a 2 litre four-cylinder engine
using gas chromatography. Non-methane hydrocarbon (NMHC) in addition to the
species of HC and other emissions such as CO2, CO and NOx were examined for
natural gas and LPG at 1...
The meshing of timing belt teeth in pulley grooves
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering - Tập 211 Số 3 - Trang 205-218 - 1997
The work described here has been carried out to obtain a better understanding of
the tooth root cracking failure mode of timing belts. Previous work has
demonstrated the close dependence of this on the tooth deflections of fully
meshed teeth, generated by torque transmission, but has not considered the
additional distortions generated in the partially meshed conditions at entry to
and exit from a ...
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