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Engine performance validation of the optimal design of experiment valvetrain parameters
Mohd Shahrudin Mohd Alias1, Nor Hidayahti Hassan2, Nor Hayati Saad3, Juri Saedon4.
Early stage of engine valvetrain noise improvement involves the implementation of
Design of Experiment (DOE) specifically the Taguchi methodology to identify the
optimum valvetrain parameters which resulted in significant noise improvement. The
parameters are consist of seven controlled factors such as cylinder head tappet bore
diameter, mechanical tappet diameter, valve spring load, camshaft exhaust and
intake waviness together with tappet exhaust and intake clearance. The confirmation
run which was previously completed yields the valvetrain noise level at 67.07db SPL by
1 meter distance in completed vehicle during idling condition. In order to satisfy the
final quality of the optimal valvetrain, a test is carried out to validate the performance
curve on a dynamometer according to benchmark specification. The objective of the
test is to validate the optimal valvetrain based on the experimental result which
minimum manufacturing target shall be achieved to indicate that the engine is
operated within its intended design. The performance test was conducted at the
manufacturing plant on an eddy current dynamometer which runs for 11 hours. As
results, the performance are within the standard with approximate increased by 6.9%
as compared with baseline valvetrain and confirmed by several follow-up tests made
on the improved valvetrain. In order to verify and address the main engine output of
the optimal valvetrain, brake specific fuel consumption (BSFC) and emissions test results
are then presented at the end of this paper.
Affiliation:
- Perusahaan Otomobil Nasional (PROTON) Sdn. Bhd, Malaysia
- Perusahaan Otomobil Nasional (PROTON) Sdn. Bhd, Malaysia
- Universiti Teknologi MARA, Malaysia
- Universiti Teknologi MARA, Malaysia
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Indexation |
Indexed by |
MyJurnal (2021) |
H-Index
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6 |
Immediacy Index
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0.000 |
Rank |
0 |
Indexed by |
Scopus 2020 |
Impact Factor
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CiteScore (1.4) |
Rank |
Q3 (Engineering (all)) |
Additional Information |
SJR (0.191) |
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