SAE Update - November 2020 - 13

Member NEws
emergency exit for a theater but leave the
door stuck in the passageway? This is what
the poppet valve does in four-stroke
engines. In two-strokes and in Mazda's
rotary engine, the ports have very high
discharge coefficients and flow at nearly
optimal levels. I've thought this way about
poppet valves since I was porting twostroke motocross bikes as a teenager.
However, the poppet valve is a highly
evolved institution that we've pretty well
optimized with multi-valve heads and VVT.
Fortunately, I've been pulled into an
engine development company called
Vaztec, and we are developing a
commercially viable rotary intake and
exhaust valve system that is showing great
promise. Far from being dead, the IC engine
has 'legs' left in the transportation
marketplace. And, just as fuel injection
moved us to a higher plane than
carburetors could ever deliver, I am
optimistic that a viable rotary valve system
may carry IC engines to a new level of
engine performance and combustion
efficiencies. Many of the inefficiencies of an
IC engine can be traced to its volumetric
flow and poor breathing performance at
low RPM. Rotary valves are known to
address these issues.
Aside from your design work on the Miata,
what past activity, accomplishment, or
memory gives you the most satisfaction?
I always wanted to have a big family, and
we were able to have nine wonderful
UPDATE

With his oldest son, who picked up his father's
love of modified motorcycles.

Skydiving with his youngest daughter.

children. They are the love of my life, and
each of them is a "contributor" in some
way, rather than just being a "consumer." I
often joke that making a prototype or two
is a good exercise, but it takes a helluva
engineer to do mass production. My
Japanese friends chide me that my
marriage was behaving like "some kind of
factory."
In what way is SAE helpful to you in your
job?
From an information standpoint, we are in
November 2020

13



SAE Update - November 2020

Table of Contents for the Digital Edition of SAE Update - November 2020

Contents
SAE Update - November 2020 - Cover1
SAE Update - November 2020 - Contents
SAE Update - November 2020 - 2
SAE Update - November 2020 - 3
SAE Update - November 2020 - 4
SAE Update - November 2020 - 5
SAE Update - November 2020 - 6
SAE Update - November 2020 - 7
SAE Update - November 2020 - 8
SAE Update - November 2020 - 9
SAE Update - November 2020 - 10
SAE Update - November 2020 - 11
SAE Update - November 2020 - 12
SAE Update - November 2020 - 13
SAE Update - November 2020 - 14
SAE Update - November 2020 - 15
SAE Update - November 2020 - 16
SAE Update - November 2020 - 17
SAE Update - November 2020 - 18
SAE Update - November 2020 - 19
SAE Update - November 2020 - 20
SAE Update - November 2020 - 21
SAE Update - November 2020 - 22
SAE Update - November 2020 - 23
SAE Update - November 2020 - 24
https://www.nxtbook.com/nxtbooks/sae/21UPD01
https://www.nxtbook.com/nxtbooks/sae/20UPD12
https://www.nxtbook.com/nxtbooks/sae/20UPD11
https://www.nxtbook.com/nxtbooks/sae/20UPD10
https://www.nxtbook.com/nxtbooks/sae/20UPD09
https://www.nxtbook.com/nxtbooks/sae/20UPD08
https://www.nxtbook.com/nxtbooks/sae/20UPD07
https://www.nxtbook.com/nxtbooks/sae/20UPD06
https://www.nxtbook.com/nxtbooks/sae/20UPD05
https://www.nxtbook.com/nxtbooks/sae/20UPD04
https://www.nxtbook.com/nxtbooks/sae/20UPD03
https://www.nxtbook.com/nxtbooks/sae/20UPD02
https://www.nxtbook.com/nxtbooks/sae/20UPD01
https://www.nxtbook.com/nxtbooks/sae/19UPD12
https://www.nxtbook.com/nxtbooks/sae/19UPD11
https://www.nxtbook.com/nxtbooks/sae/19UPD10
https://www.nxtbook.com/nxtbooks/sae/19UPD09
https://www.nxtbook.com/nxtbooks/sae/19UPD08
https://www.nxtbook.com/nxtbooks/sae/19UPD07
https://www.nxtbook.com/nxtbooks/sae/19UPD06
https://www.nxtbook.com/nxtbooks/sae/19UPD05
https://www.nxtbook.com/nxtbooks/sae/19UPD04
https://www.nxtbook.com/nxtbooks/sae/19UPD03
https://www.nxtbook.com/nxtbooks/sae/19UPD02
https://www.nxtbook.com/nxtbooks/sae/19UPD01
https://www.nxtbook.com/nxtbooks/sae/18UPD12
https://www.nxtbook.com/nxtbooks/sae/18UPD11
https://www.nxtbook.com/nxtbooks/sae/18UPD10
https://www.nxtbook.com/nxtbooks/sae/18UPD09
https://www.nxtbook.com/nxtbooks/sae/18UPD08
https://www.nxtbook.com/nxtbooks/sae/18UPD07
https://www.nxtbook.com/nxtbooks/sae/18UPD06
https://www.nxtbook.com/nxtbooks/sae/18UPD05
https://www.nxtbook.com/nxtbooks/sae/18UPD04
https://www.nxtbook.com/nxtbooks/sae/18UPD03
https://www.nxtbook.com/nxtbooks/sae/18UPD02
https://www.nxtbook.com/nxtbooks/sae/18UPD01
https://www.nxtbook.com/nxtbooks/sae/17UPD12
https://www.nxtbook.com/nxtbooks/sae/17UPD11
https://www.nxtbook.com/nxtbooks/sae/17UPD10
https://www.nxtbook.com/nxtbooks/sae/17UPD09
https://www.nxtbook.com/nxtbooks/sae/17UPD08
https://www.nxtbook.com/nxtbooks/sae/17UPD07
https://www.nxtbook.com/nxtbooks/sae/17UPD06
https://www.nxtbook.com/nxtbooks/sae/17UPD05
https://www.nxtbook.com/nxtbooks/sae/17UPD04
https://www.nxtbook.com/nxtbooks/sae/17UPD03
https://www.nxtbook.com/nxtbooks/sae/17UPD02
https://www.nxtbook.com/nxtbooks/sae/17UPD01
https://www.nxtbook.com/nxtbooks/sae/16UPD12
https://www.nxtbook.com/nxtbooks/sae/16UPD11
https://www.nxtbook.com/nxtbooks/sae/16UPD10
https://www.nxtbook.com/nxtbooks/sae/16UPD09
https://www.nxtbook.com/nxtbooks/sae/16UPD08
https://www.nxtbook.com/nxtbooks/sae/16UPD07
https://www.nxtbook.com/nxtbooks/sae/16UPD06
https://www.nxtbook.com/nxtbooks/sae/16UPD05
https://www.nxtbook.com/nxtbooks/sae/16UPD04
https://www.nxtbook.com/nxtbooks/sae/16UPD03
https://www.nxtbook.com/nxtbooks/sae/16UPD02
https://www.nxtbook.com/nxtbooks/sae/16UPD01
https://www.nxtbook.com/nxtbooks/sae/15UPD12
https://www.nxtbook.com/nxtbooks/sae/15UPD11
https://www.nxtbook.com/nxtbooks/sae/15UPD10
https://www.nxtbook.com/nxtbooks/sae/15UPD09
https://www.nxtbook.com/nxtbooks/sae/15UPD08
https://www.nxtbook.com/nxtbooks/sae/15UPD07
https://www.nxtbook.com/nxtbooks/sae/15UPD06
https://www.nxtbook.com/nxtbooks/sae/15UPD05
https://www.nxtbook.com/nxtbooks/sae/15UPD04
https://www.nxtbook.com/nxtbooks/sae/15UPD03
https://www.nxtbook.com/nxtbooks/sae/15UPD02
https://www.nxtbook.com/nxtbooks/sae/15UPD01
https://www.nxtbook.com/nxtbooks/sae/14UPD12
https://www.nxtbook.com/nxtbooks/sae/14UPD11
https://www.nxtbook.com/nxtbooks/sae/14UPD10
https://www.nxtbook.com/nxtbooks/sae/14UPD09
https://www.nxtbook.com/nxtbooks/sae/14UPD08
https://www.nxtbook.com/nxtbooks/sae/14UPD07
https://www.nxtbook.com/nxtbooks/sae/14UPD06
https://www.nxtbook.com/nxtbooks/sae/14UPD05
https://www.nxtbook.com/nxtbooks/sae/14UPD04
https://www.nxtbook.com/nxtbooks/sae/14UPD03
https://www.nxtbook.com/nxtbooks/sae/14UPD02
https://www.nxtbook.com/nxtbooks/sae/14UPD01
https://www.nxtbook.com/nxtbooks/sae/13UPDD1114
https://www.nxtbook.com/nxtbooks/sae/13UPDD1017
https://www.nxtbook.com/nxtbooks/sae/13UPDD0919
https://www.nxtbook.com/nxtbooks/sae/13UPDD0815
https://www.nxtbook.com/nxtbooks/sae/13UPDD0718
https://www.nxtbook.com/nxtbooks/sae/13UPDD0620
https://www.nxtbook.com/nxtbooks/sae/13UPDD0516
https://www.nxtbook.com/nxtbooks/sae/13UPDD0411
https://www.nxtbook.com/nxtbooks/sae/13UPDD0314
https://www.nxtbook.com/nxtbooks/sae/13UPDD0214
https://www.nxtbook.com/nxtbooks/sae/13UPDD0117
https://www.nxtbook.com/nxtbooks/sae/13UPDD1213
https://www.nxtbook.com/nxtbooks/sae/professionaldevelopment2013
https://www.nxtbook.com/nxtbooks/sae/12UPDD1115
https://www.nxtbook.com/nxtbooks/sae/12UPDD1018
https://www.nxtbook.com/nxtbooks/sae/12UPDD0913
https://www.nxtbook.com/nxtbooks/sae/12UPDD0816
https://www.nxtbook.com/nxtbooks/sae/12UPDD0719
https://www.nxtbook.com/nxtbooks/sae/12UPDD0621
https://www.nxtbook.com/nxtbooks/sae/12UPDD0517
https://www.nxtbook.com/nxtbooks/sae/12UPDD0412
https://www.nxtbook.com/nxtbooks/sae/12UPDD0315
https://www.nxtbook.com/nxtbooks/sae/12UPDD0216
https://www.nxtbook.com/nxtbooks/sae/12UPDD0119
https://www.nxtbook.com/nxtbooks/sae/12UPDD1208
https://www.nxtbook.com/nxtbooks/sae/11UPDD1109
https://www.nxtbook.com/nxtbooks/sae/11UPDD1020
https://www.nxtbook.com/nxtbooks/sae/11UPDD0915
https://www.nxtbook.com/nxtbooks/sae/11UPDD0811
https://www.nxtbook.com/nxtbooks/sae/11UPDD0714
https://www.nxtbook.com/nxtbooks/sae/11UPDD0609
https://www.nxtbook.com/nxtbooks/sae/11UPDD0512
https://www.nxtbook.com/nxtbooks/sae/11UPDD0420
https://www.nxtbook.com/nxtbooks/sae/11UPDD0317
https://www.nxtbook.com/nxtbooks/sae/11UPDD0210
https://www.nxtbook.com/nxtbooks/sae/11UPDD0112
https://www.nxtbook.com/nxtbooks/sae/11UPDD1214
https://www.nxtbook.com/nxtbooks/sae/10UPDD1111
https://www.nxtbook.com/nxtbooks/sae/10UPDD1014
https://www.nxtbook.com/nxtbooks/sae/10UPDD0916
https://www.nxtbook.com/nxtbooks/sae/10UPDD0812
https://www.nxtbook.com/nxtbooks/sae/10UPDD0715
https://www.nxtbook.com/nxtbooks/sae/10UPDD0610
https://www.nxtbook.com/nxtbooks/sae/10UPDD0513
https://www.nxtbook.com/nxtbooks/sae/10UPDD0408
https://www.nxtbook.com/nxtbooks/sae/10UPDD0311
https://www.nxtbook.com/nxtbooks/sae/10UPDD0211
https://www.nxtbook.com/nxtbooks/sae/10UPDD0114
https://www.nxtbook.com/nxtbooks/sae/10UPDD1217
https://www.nxtbook.com/nxtbooks/sae/update_200912
https://www.nxtbook.com/nxtbooks/sae/update_200911
https://www.nxtbook.com/nxtbooks/sae/update_200910
https://www.nxtbook.com/nxtbooks/sae/update_200909_v2
https://www.nxtbook.com/nxtbooks/sae/update_200909
https://www.nxtbook.com/nxtbooks/sae/update_200908
https://www.nxtbook.com/nxtbooks/sae/update_200907
https://www.nxtbook.com/nxtbooks/sae/update_200906
https://www.nxtbook.com/nxtbooks/sae/update_200905
https://www.nxtbook.com/nxtbooks/sae/update_200904
https://www.nxtbook.com/nxtbooks/sae/update_200903
https://www.nxtbook.com/nxtbooks/sae/update_200902
https://www.nxtbook.com/nxtbooks/sae/update_200811
https://www.nxtbookmedia.com