Cylinder Head

Why aren't injectors placed in the cylinder head in petrol engines?

They use injectors in the cylinder head in diesel engines , why not in petrol engines.

This is often referred to as direct injection.
It can be used to reduce emissions and provide an ultra lean burn engine for better efficiency.
The 1955 Mercedes-Benz 300SL was the first sports car to use direct fuel injection. Many WW ll aircraft used direct injection. Since then, several automobile manufacturers have introduced direct injected gasoline engines.
The down side seems to be cost - both the cost of research and development along with the required high pressure pump and computerized injection timing.
The three way catalytic converters, for instance, are a much more cost effective way to meet present emission standards.
However, given the significant advantages of direct injection and the technological gains in computerized engine controls, I suspect we will be seeing a lot more direct injected engines in the near future.

Cylinder Head Gaskets Briggs 271075 271866 271866S
Cylinder Head Gaskets Briggs 271075 271866 271866S
$3.17
Time Remaining: 52m
Buy It Now for only: $3.17

Cylinder Head Gasket For Briggs 271917 Model 100700
Cylinder Head Gasket For Briggs 271917 Model 100700
$3.64
Time Remaining: 52m
Buy It Now for only: $3.64

Cylinder Head Gasket Briggs 272200 272200S 12A800
Cylinder Head Gasket Briggs 272200 272200S 12A800
$3.26
Time Remaining: 54m
Buy It Now for only: $3.26

john deere lx188 kawasaki 17hp cylinder head case block OEM
john deere lx188 kawasaki 17hp cylinder head case block OEM
$140.00
Time Remaining: 1h 20m
Buy It Now for only: $140.00

NEW OEM BRIGGS  STRATTON 4122 CYLINDER HEAD GASKET PACK OF 5 272200S
NEW OEM BRIGGS STRATTON 4122 CYLINDER HEAD GASKET PACK OF 5 272200S
$15.99
Time Remaining: 2h 2m
Buy It Now for only: $15.99

NEW OEM BRIGGS  STRATTON 692230 CYLINDER HEAD GASKET
NEW OEM BRIGGS STRATTON 692230 CYLINDER HEAD GASKET
$5.99
Time Remaining: 2h 21m
Buy It Now for only: $5.99

NEW OEM BRIGGS  STRATTON 692231 CYLINDER HEAD GASKET
NEW OEM BRIGGS STRATTON 692231 CYLINDER HEAD GASKET
$9.99
Time Remaining: 2h 21m
Buy It Now for only: $9.99

NEW OEM BRIGGS  STRATTON 692110 CYLINDER HEAD GASKET
NEW OEM BRIGGS STRATTON 692110 CYLINDER HEAD GASKET
$7.99
Time Remaining: 2h 29m
Buy It Now for only: $7.99

NEW OEM BRIGGS  STRATTON 272157S CYLINDER HEAD GASKET
NEW OEM BRIGGS STRATTON 272157S CYLINDER HEAD GASKET
$3.99
Time Remaining: 2h 45m
Buy It Now for only: $3.99

NEW OEM BRIGGS  STRATTON 272163S CYLINDER HEAD GASKET LOT OF 2
NEW OEM BRIGGS STRATTON 272163S CYLINDER HEAD GASKET LOT OF 2
$8.99
Time Remaining: 2h 45m
Buy It Now for only: $8.99

NEW OEM BRIGGS  STRATTON 272164 CYLINDER HEAD GASKET
NEW OEM BRIGGS STRATTON 272164 CYLINDER HEAD GASKET
$4.99
Time Remaining: 2h 45m
Buy It Now for only: $4.99

NEW OEM BRIGGS  STRATTON 272167 CYLINDER HEAD GASKET LOT OF 4
NEW OEM BRIGGS STRATTON 272167 CYLINDER HEAD GASKET LOT OF 4
$9.99
Time Remaining: 2h 46m
Buy It Now for only: $9.99

NEW OEM BRIGGS  STRATTON 272171 CYLINDER HEAD GASKET
NEW OEM BRIGGS STRATTON 272171 CYLINDER HEAD GASKET
$3.99
Time Remaining: 2h 46m
Buy It Now for only: $3.99

Briggs and Stratton Lot of 3 Part 27670 Gasket Cylinder Head
Briggs and Stratton Lot of 3 Part 27670 Gasket Cylinder Head
$17.99
Time Remaining: 3h 4m
Buy It Now for only: $17.99

kohler k241 magnum m10 cylinder head good condition 10hp wheel horse 310 8
kohler k241 magnum m10 cylinder head good condition 10hp wheel horse 310 8
$14.99
Time Remaining: 3h 9m
Buy It Now for only: $14.99

Briggs and Stratton Part 27752 Gasket Cylinder Head
Briggs and Stratton Part 27752 Gasket Cylinder Head
$9.99
Time Remaining: 3h 13m
Buy It Now for only: $9.99

Briggs opposed twin cylinder head 42 cubic inch 422400  422700
Briggs opposed twin cylinder head 42 cubic inch 422400 422700
$12.99
Time Remaining: 3h 14m
Buy It Now for only: $45.95

Briggs  Stratton Single Cylinder L Head built after 1981 Repair Manual
Briggs Stratton Single Cylinder L Head built after 1981 Repair Manual
$2.26 (3 Bids)
Time Remaining: 3h 30m

Briggs  Stratton Model 6 engine cylinder head
Briggs Stratton Model 6 engine cylinder head
$15.00
Time Remaining: 3h 35m
Buy It Now for only: $15.00

OEM ONAN 110 3181 CASE C26201 CYLINDER HEAD GASKET PART
OEM ONAN 110 3181 CASE C26201 CYLINDER HEAD GASKET PART
$23.99
Time Remaining: 3h 39m
Buy It Now for only: $23.99

24 318 116 S Kohler 1 or 2 Cylinder Head Assembly CV730 CV740
24 318 116 S Kohler 1 or 2 Cylinder Head Assembly CV730 CV740
$65.00
Time Remaining: 3h 44m
Buy It Now for only: $65.00

237670 S GENUINE OEM KOHLER CYLINDER HEAD 237670 S K301 K321
237670 S GENUINE OEM KOHLER CYLINDER HEAD 237670 S K301 K321
$269.99
Time Remaining: 4h 12m
Buy It Now for only: $269.99

1275581 OEM Kohler Cylinder Head Kit 1 CH11 CH125 CH13 CH14 CH15 12 755 81
1275581 OEM Kohler Cylinder Head Kit 1 CH11 CH125 CH13 CH14 CH15 12 755 81
$209.99
Time Remaining: 4h 14m
Buy It Now for only: $209.99

Tecumseh 175HP XL C OHV Enduro OHV175 Cylinder head assembly GOOD SHAPE 37495
Tecumseh 175HP XL C OHV Enduro OHV175 Cylinder head assembly GOOD SHAPE 37495
$74.99
Time Remaining: 4h 15m
Buy It Now for only: $74.99

Tecumseh Engine Part  CYLINDER HEAD GASKET 33015A
Tecumseh Engine Part CYLINDER HEAD GASKET 33015A
$9.99
Time Remaining: 4h 32m
Buy It Now for only: $9.99

Tecumseh Engine Part  32631A CYLINDER HEAD GASKET
Tecumseh Engine Part 32631A CYLINDER HEAD GASKET
$11.99
Time Remaining: 4h 34m
Buy It Now for only: $11.99

Tecumseh Engine Part  32643A CYLINDER HEAD GASKET
Tecumseh Engine Part 32643A CYLINDER HEAD GASKET
$9.99
Time Remaining: 4h 35m
Buy It Now for only: $9.99

Briggs  Stratton 18HP TWIN GT6000 422437 Cylinder head 1 NLA GOODSHAPE 493457
Briggs Stratton 18HP TWIN GT6000 422437 Cylinder head 1 NLA GOODSHAPE 493457
$15.00
Time Remaining: 4h 36m
Buy It Now for only: $15.00

Briggs  Stratton 18HP TWIN GT6000 422437 Cylinder head 2 NLA GOODSHAPE 493458
Briggs Stratton 18HP TWIN GT6000 422437 Cylinder head 2 NLA GOODSHAPE 493458
$15.00
Time Remaining: 4h 37m
Buy It Now for only: $15.00

USED  5 BRIGGS AND STRATTON CYLINDER HEAD ENGINE
USED 5 BRIGGS AND STRATTON CYLINDER HEAD ENGINE
$5.99
Time Remaining: 4h 55m

Briggs  Stratton OEM Cylinder Head Gasket 692230 New OD
Briggs Stratton OEM Cylinder Head Gasket 692230 New OD
$7.99
Time Remaining: 5h 37m
Buy It Now for only: $7.99

Briggs 12J802 1960 E1 Cylinder Head 590411
Briggs 12J802 1960 E1 Cylinder Head 590411
$8.99
Time Remaining: 5h 59m
Buy It Now for only: $8.99

Briggs and Stratton 125 HP Cylinder Head Cover TINS MODEL286707 JOHN DEER 7
Briggs and Stratton 125 HP Cylinder Head Cover TINS MODEL286707 JOHN DEER 7
$15.99
Time Remaining: 6h 9m
Buy It Now for only: $15.99

NEW Old Stock Briggs  Stratton Engine Cylinder Head 212914 691154
NEW Old Stock Briggs Stratton Engine Cylinder Head 212914 691154
$49.99
Time Remaining: 6h 37m

Genuine OEM DR150X 431 Baja Cylinder Head Gasket Assembly DR150 XR Xmoto 150cc
Genuine OEM DR150X 431 Baja Cylinder Head Gasket Assembly DR150 XR Xmoto 150cc
$10.54
Time Remaining: 6h 48m
Buy It Now for only: $10.54

Briggs  Stratton cylinder head 590525
Briggs Stratton cylinder head 590525
$19.95
Time Remaining: 6h 55m
Buy It Now for only: $19.95

JOHN DEERE 425 RIDING LAWNMOWER CYLINDER HEAD GASKET PART  M97309
JOHN DEERE 425 RIDING LAWNMOWER CYLINDER HEAD GASKET PART M97309
$15.64
Time Remaining: 7h 6m
Buy It Now for only: $15.64

KAWASAKI CYLINDER HEAD 1 P N 11008 700111008 6043 FH500V FH541V FH580V
KAWASAKI CYLINDER HEAD 1 P N 11008 700111008 6043 FH500V FH541V FH580V
$159.00
Time Remaining: 7h 6m
Buy It Now for only: $159.00

JOHN DEERE 425 RIDING LAWNMOWER CYLINDER HEAD GASKET PART  M97309
JOHN DEERE 425 RIDING LAWNMOWER CYLINDER HEAD GASKET PART M97309
$15.64
Time Remaining: 7h 8m
Buy It Now for only: $15.64

Cub Cadet 147 Tractor Kohler K321 14hp Engine Cylinder Head
Cub Cadet 147 Tractor Kohler K321 14hp Engine Cylinder Head
$49.99
Time Remaining: 7h 20m
Buy It Now for only: $49.99

Cylinder Head Gasket For Briggs  Stratton 698210 692554 273489
Cylinder Head Gasket For Briggs Stratton 698210 692554 273489
$4.99
Time Remaining: 7h 36m
Buy It Now for only: $4.99

BRIGGS 801283 CYLINDER HEAD
BRIGGS 801283 CYLINDER HEAD
$16.00
Time Remaining: 8h
Buy It Now for only: $16.00

JOHN DEERE 285 LAWN MOWER GARDEN KAWASAKI FD590V CYLINDER HEAD
JOHN DEERE 285 LAWN MOWER GARDEN KAWASAKI FD590V CYLINDER HEAD
$50.00
Time Remaining: 8h 6m
Buy It Now for only: $50.00

BRIGGS  STRATTON Head Cylinder 795501
BRIGGS STRATTON Head Cylinder 795501
$35.95
Time Remaining: 8h 7m
Buy It Now for only: $35.95

Honda Cylinder Head Assembly Replacement 12200 ZH9 405 GX240 GX270 Head Only
Honda Cylinder Head Assembly Replacement 12200 ZH9 405 GX240 GX270 Head Only
$39.15
Time Remaining: 8h 32m
Buy It Now for only: $39.15

NEW HONDA CYLINDER RIGHT  LEFT HEAD SET PAIR FOR GX620 20HP V TWIN
NEW HONDA CYLINDER RIGHT LEFT HEAD SET PAIR FOR GX620 20HP V TWIN
$119.95
Time Remaining: 8h 36m
Buy It Now for only: $119.95

BRIGGS  STRATTON OEM Cylinder Head Gasket 271917
BRIGGS STRATTON OEM Cylinder Head Gasket 271917
$2.69
Time Remaining: 8h 46m
Buy It Now for only: $2.69

Briggs  Stratton 375 Cylinder Head and bolts may fit 35 475 etc
Briggs Stratton 375 Cylinder Head and bolts may fit 35 475 etc
$2.99
Time Remaining: 9h 3m

BRIGGS AND STRATTON SINGLE CYLINDER L HEAD REPAIR MANUAL
BRIGGS AND STRATTON SINGLE CYLINDER L HEAD REPAIR MANUAL
$15.00
Time Remaining: 9h 11m
Buy It Now for only: $15.00

Briggs  Stratton 799859 Cylinder Head Replaces  794870 793009 698040
Briggs Stratton 799859 Cylinder Head Replaces 794870 793009 698040
$130.00
Time Remaining: 9h 17m
Buy It Now for only: $130.00

Kawasaki Cylinder head 2 110087021 for Buffer
Kawasaki Cylinder head 2 110087021 for Buffer
$50.00
Time Remaining: 9h 53m

OEM GENUINE BRIGGS  STRATTON CYLINDER HEAD GASKET P N 27463
OEM GENUINE BRIGGS STRATTON CYLINDER HEAD GASKET P N 27463
$9.50
Time Remaining: 10h
Buy It Now for only: $9.50

691715 BRIGGS  STRATTON HEAD CYLINDER P N 691715
691715 BRIGGS STRATTON HEAD CYLINDER P N 691715
$13.99
Time Remaining: 10h 16m
Buy It Now for only: $13.99

Kohler 20HP Toro CV20S 65531 Cylinder head assembly 24 318 105 S 1
Kohler 20HP Toro CV20S 65531 Cylinder head assembly 24 318 105 S 1
$70.00
Time Remaining: 10h 28m
Buy It Now for only: $70.00

Kohler 20HP Toro CV20S 65531 Cylinder head assembly 24 318 106 S 2
Kohler 20HP Toro CV20S 65531 Cylinder head assembly 24 318 106 S 2
$70.00
Time Remaining: 10h 28m
Buy It Now for only: $70.00

Briggs  Stratton 8HP 190402 Cylinder head GOOD SHAPE 691715 212286 214015
Briggs Stratton 8HP 190402 Cylinder head GOOD SHAPE 691715 212286 214015
$14.99
Time Remaining: 10h 45m
Buy It Now for only: $14.99

Genuine Kohler Engines Kit Cylinder Head Gaskets 20 841 01 S New in Box
Genuine Kohler Engines Kit Cylinder Head Gaskets 20 841 01 S New in Box
$23.49
Time Remaining: 11h 4m
Buy It Now for only: $23.49

Tecumseh 85HP Snow King LH318SA Cylinder head OEM NLA GOOD SHAPE 36449
Tecumseh 85HP Snow King LH318SA Cylinder head OEM NLA GOOD SHAPE 36449
$24.99
Time Remaining: 11h 11m
Buy It Now for only: $24.99

New Stens Cylinder Head Assembly Honda 12200 ZF6 406 515 790
New Stens Cylinder Head Assembly Honda 12200 ZF6 406 515 790
$144.97
Time Remaining: 11h 23m
Buy It Now for only: $144.97

New Stens Cylinder Head Assembly Honda 12200 ZH9 405 515 786
New Stens Cylinder Head Assembly Honda 12200 ZH9 405 515 786
$135.15
Time Remaining: 11h 24m
Buy It Now for only: $135.15

New Toro Cylinder Head Stud Part  821240 For Lawn  Garden Equipment
New Toro Cylinder Head Stud Part 821240 For Lawn Garden Equipment
$14.95
Time Remaining: 11h 33m
Buy It Now for only: $14.95

New Toro Cylinder Head Stud Part  920928 For Lawn  Garden Equipment
New Toro Cylinder Head Stud Part 920928 For Lawn Garden Equipment
$16.38
Time Remaining: 11h 33m
Buy It Now for only: $16.38

New Stens Cylinder Head Assembly Honda 12210 ZH8 415 515 778
New Stens Cylinder Head Assembly Honda 12210 ZH8 415 515 778
$93.80
Time Remaining: 11h 37m
Buy It Now for only: $93.80

New Stens Cylinder Head Assembly Honda 12210 ZL0 405 515 782
New Stens Cylinder Head Assembly Honda 12210 ZL0 405 515 782
$93.80
Time Remaining: 11h 37m
Buy It Now for only: $93.80

Genuine Briggs  Stratton Part 272200 Cylinder Head Gasket New OEM Part
Genuine Briggs Stratton Part 272200 Cylinder Head Gasket New OEM Part
$2.00
Time Remaining: 11h 42m
Buy It Now for only: $2.99

Briggs Cylinder Head Gasket 272171 New fits some 11 series
Briggs Cylinder Head Gasket 272171 New fits some 11 series
$2.00
Time Remaining: 11h 42m
Buy It Now for only: $2.60

Cylinder Head Gasket Briggs  Stratton 698717 272536 270341 or 272170 1482
Cylinder Head Gasket Briggs Stratton 698717 272536 270341 or 272170 1482
$2.50
Time Remaining: 11h 42m
Buy It Now for only: $3.35

Genuine Briggs  Stratton Part 272200 Cylinder Head Gasket New OEM Part
Genuine Briggs Stratton Part 272200 Cylinder Head Gasket New OEM Part
$2.50
Time Remaining: 11h 49m
Buy It Now for only: $3.50

Genuine Briggs  Stratton Part 272200 Cylinder Head Gasket New OEM
Genuine Briggs Stratton Part 272200 Cylinder Head Gasket New OEM
$2.00
Time Remaining: 11h 49m
Buy It Now for only: $3.00

Genuine Briggs  Stratton Part 272200 Cylinder Head Gasket New OEM Part
Genuine Briggs Stratton Part 272200 Cylinder Head Gasket New OEM Part
$1.75
Time Remaining: 11h 50m
Buy It Now for only: $3.00

Genuine Kohler Cylinder Head Kit  12 755 93 S Kohler Engine  KS5
Genuine Kohler Cylinder Head Kit 12 755 93 S Kohler Engine KS5
$46.81
Time Remaining: 12h 28m
Buy It Now for only: $46.81

699482 Bolt Cylinder Head 12  13 CID OHV Models Others
699482 Bolt Cylinder Head 12 13 CID OHV Models Others
$4.20
Time Remaining: 12h 32m
Buy It Now for only: $4.20

8HP 191707 Briggs  Stratton Cylinder Head 212286  Bolts John Deere 108 Tractor
8HP 191707 Briggs Stratton Cylinder Head 212286 Bolts John Deere 108 Tractor
$15.00
Time Remaining: 12h 39m
Buy It Now for only: $21.00

Kohler K241 Cylinder Head and Bolts off John Deere 210
Kohler K241 Cylinder Head and Bolts off John Deere 210
$20.00
Time Remaining: 13h 8m

Kohler Command 13HP CH13S Cylinder head assembly w Valves
Kohler Command 13HP CH13S Cylinder head assembly w Valves
$54.99
Time Remaining: 13h 28m

Genuine Honda 12310 Z0J 000 Cylinder Head Cover GC135 GC160 GC190 GCV135 GCV160
Genuine Honda 12310 Z0J 000 Cylinder Head Cover GC135 GC160 GC190 GCV135 GCV160
$7.99
Time Remaining: 13h 38m
Buy It Now for only: $7.99