B7xa Transmission

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  1. B7xa Transmission Manual
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Honda has long built nearly all of its own automobiletransmissions, unlike many other automobile manufacturers which often source transmissions from external sources.[1] The most notable exception was in 2014, when Honda decided to forgo an in-house designed transmission and chose the ZF 9HP transmission for their Acura TLX V6 model, later extending the offering of the ZF transmission to the Acura MDX, Odyssey, Pilot and Ridgeline.[2] However, there have been reports of problems with ZF transmissions and Acura recalled its 2015 TLX models. ZF has attributed most of these problems to software issues.

Automatic/Semi-automatic transmissions[edit]

TransmissionB7xa

Most of Honda's automatic transmissions are unusual in that they do not use planetary gears like nearly all other makers, however, Honda has recently introduced (2017) an all-new, in-house designed 10-speed automatic that uses planetary gears. Honda's older transmissions such as the Hondamatic semi-automatic transmission and its successors use traditional, individual gears on parallel axes like a manual transmission, with each gear ratio engaged by a separate hydraulic clutch pack.This design is also noteworthy because it preserves engine braking by eliminating a sprag between first and second gears. Instead of a sprag or roller clutch, Honda's older transmissions rely on pressure circuits to modulate line pressure to change gears.[3]

Honda was forced to invent their new system due to the vast array of patents on automatic transmission technology held by BorgWarner and others.

Honda initially chose to integrate the transmission and engine block for its first application (in the N600) as in the Mini. The Hondamatic incorporated a lockup function, which Honda called a third ratio, and had manual gear selection. The company's early transmissions also used a patented torque converter which used stator force to reduce hydraulic losses by using a reaction arm to increase the hydraulic pressure when the stator was stalled. The reaction arm acted directly on the regulator valve this meant that increased pressure was available to the clutch plates when torque multiplication was greatest. The stator was equipped with a sprag clutch enabling it to freewheel when required. The N360/N600 controlled gear changes by balancing a throttle valve and a centrifugal valve. These 'opposing' pressures caused the gear changes through the free-floating gear change valves.

On October 18, 1967, the N360 AT model with the lock-up function was unveiled at the London Auto Show.(ref Honda Worldwide) It is not now clear if the lockup function made it into production; it was not fitted to the N600AT for Europe.

The typical torque converter of the time was about 11.5in. long and the torque multiplication ratio was about 1.5 to 1. The N360/N600 torque converter was about 5.5in. long and achieved a torque multiplication of over 2.2 to 1.

Narayan

Manual

The first Civic was equipped with a manually changed hydraulically engaged two-speed transmission with a torque converter. This torque converter was nominally about 7in. and achieved a torque multiplication of c2.7 to 1. It also used the reaction arm on the stator as in the N360/N600 to increase hydraulic pressure. It was initially announced in Europe as an automatic as the staff at Honda in Europe assumed that it would like the N600 to be fully automatic. This was quickly changed to 'Hondamatic'. This gearbox was a separate unit and used ATF - Automatic Transmission Fluid.

The company's naming scheme is also confusing, as it is specific to a single model of the vehicle and some identifiers are reused.

  • 1973–1979 H2 — 2-speed
    • Honda Civic, Honda Accord, Honda Prelude
  • 1979–1985 H3 — 3-speed
    • Honda Civic, Honda Accord, Honda Prelude, Honda CRX, Triumph Acclaim
  • 1983–1991 H4 — 4-speed (a.k.a. AS/AK/F4/CA/P1/K4/L4/PY8A/ML4A/MY8A)
    • Honda Civic, Honda Accord, Honda Prelude, Honda CRX, Honda/Acura Integra
  • 1986–1990 G4 — 4-speed (a.k.a. L5/PL5X)
  • 1989–1991 Civic AWD — 4-speed (a.k.a. MPSA/S5)
    • Honda Civic AWD
  • 1990–1997 H4A — 4-speed (a.k.a. A6VA/AOYA/APX4/APXA/BOYA/MP1A/MP1B/MPJA/MPOA/MPWA/MPXA/PX4B)
    • Honda Accord, Honda Prelude, Honda Odyssey/Isuzu Oasis, Acura CL
  • 1990–2000 Integra — 4-speed (a.k.a. MP7A/MPRA/RO/S4XA/SKWA/SP7A)
  • 1991–1998 Vigor — 4-speed (a.k.a. M1WA/MPWA)
    • Acura Vigor, Acura TL
  • 1991–2003 MPYA — 4-speed (a.k.a. MPYA/M5DA/M5HA/MPYA)
    • Acura Legend, Acura TL, Acura RL
  • 1992–2004 S24A — 4-speed (also A24A/A2YA/A4RA/B46A/B4RA/B7ZA/BDRA/BMXA/M24A/M4RA/M4TA/MCVA/MDLA/MDMA/MRVA/S4RA/SLXA)
    • Civic, del Sol, CR-V(up until 2001)
  • 1995–2002 B7XA — 4-speed (a.k.a. B7TA/B7VA/B7YA/M7ZA/MPZA)
    • Honda Accord, Acura CL, Honda Odyssey/Isuzu Oasis, Acura TL
  • 2003–2006(some 2007) MZKA — 4-speed, FWD & AWD (a.k.a. BZKA for FWD, MZKA for AWD)
  • 2007–2011 MNZA — 5-speed, FWD & AWD (a.k.a. BZNA for FWD, MNZA for AWD)
  • 1996–2003 Multimatic — CVT (also M4VA/MLYA/SLYA)
    • Honda Civic HX CVT, Honda City
  • 1997–2002 M6HA — 4-speed (also B6VA/BAXA/MAXA/MDWA/MGRA)
    • Honda Prelude, Acura CL, Honda Accord, Honda Odyssey/Isuzu Oasis
  • 2000–2013 H5 — 5-speed (also B7WA/BAYA/BCLA/BGFA/BGHA/BYBA/BWEA/M7WA/MAYA/MCLA/MDKA/MGFA/MGHA/MRMA)
    • Acura TL, Acura CL, Acura MDX, Acura RSX, Acura RDX, Honda Odyssey, Honda Accord, Saturn Vue, Honda Ridgeline
  • 2010– H6 — 6-speed (BYKA)
    • Acura MDX, Acura ZDX, Acura RL, Acura TL, Acura RDX, Acura RLX (non-hybrid, 2014-2017), Honda Pilot, Honda Ridgeline
  • 2014– ZF 9HP transmission — 9-speed
    • Acura TLX (V6), Honda Pilot, Honda Odyssey, Acura MDX, Honda Passport, Honda Ridgeline (2020)
  • 2017– Honda 10-speed automatic — 10-speed with Sequential SportShift Paddle Shifters
    • Honda Odyssey, Honda Accord 2.0 turbo, Acura RDX, Acura TLX (2nd Gen), Acura RLX (non-hybrid, 2018-2020)

Continuous Variable Transmission[edit]

Dual-clutch transmission[edit]

  • 2014– 8-speed dual clutch transmission with torque converter
    • Acura TLX (I4), Acura ILX
  • 2014– 7-speed dual clutch automatic transmission
    • Acura RLX (Hybrid), Acura MDX (Hybrid)

Manual transmissions[edit]

  • 1986-1987 A2K5/A2K6 — 5 Speed
    • Honda Prelude 2.0 Si
  • 1986 A1B2
    • Honda Prelude Dx Carb
  • 1986-1987 A2Q5 — 5 Speed
  • 1986-1987 A2Q6 — 5 speed
  • 1988 E2Q5 — 5 speed
  • 1988 E2Q6 — 5 speed
  • 1988-1989 D2J5 — 5 speed
    • Honda Prelude Si
  • 1989 E2R5 — 5 speed
  • 1989 E2R6 — 5 speed
  • 1990-1991 D2A4 — 5 speed
    • Honda Prelude 2.0Si, Si, SR
  • 1992-1995 S20 A000 — 5 speed
    • Honda Civic CX, VX
      • 1—3.250
      • 2—1.761
      • 3—1.066
      • 4—0.852
      • 5—0.702
      • R—3.153
    • Honda Civic DX,LX
      • 1—3.250
      • 2—1.761
      • 3—1.172
      • 4—0.909
      • 5—0.702
      • R—3.153
  • 1992-1995 S20 B000 — 5 speed
    • Honda Civic EX,Si
      • 1—3.250
      • 2—1.900
      • 3—1.250
      • 4—0.909
      • 5—0.702
      • R—3.153
  • 1996-2006 SEV — 5 speed?
    • Honda HR-V
  • 1997 S8G — 5 speed
    • Honda Integra (Japanese Domestic Market, ZC)
    • Honda CRX del sol Si & ESi (late model with D16Y8 engine)
  • 1997-1999 S20 B000 — 5 speed
    • Honda Civic Coupe EX
  • 1998 E5F P4A — 5 speed
    • Honda Civic LX
  • 2004-2007 ATC6 — 6-speed
    • Honda Accord 3.0L
  • 2007-2008 SMJM — 5 speed
    • Honda Fit
  • 2009-2014 SP4M — 5 speed
    • Honda Fit
  • 2015-2017 S7A7 — 6 speed
    • Honda Fit

References[edit]

  1. ^Henry, Ian. 'Shifting priorities'. Automotive Manufacturing Solutions. Retrieved 18 December 2017.
  2. ^Duffer, Robert. 'Honda lurches ahead with pesky 9-speed transmission'. Chicago Tribune. Retrieved 18 December 2017.
  3. ^[1]

External links[edit]

B7xa Transmission Manual

  • 'The Hondamatic Transmission'. Honda.Com. Retrieved February 25, 2006.

B7xa Transmission For Sale

Retrieved from 'https://en.wikipedia.org/w/index.php?title=List_of_Honda_transmissions&oldid=983313498'
H5
Overview
ManufacturerHonda
Production2000–2015
Body and chassis
Class5-speed transverseautomatic transmission
Chronology
PredecessorB7XA
MPYA

The H5 is Honda's first 5-speed automatic transmission.

Applications:

  • 2000 Acura TL (M7WA)
  • 2001–2003 Acura CL (BGFA)
  • 2001–2003 Acura CL (MGFA)
  • 2001–2003 Acura TL (B7WA)
  • 2001 Acura MDX (MGHA)
  • 2002–2006 Acura RSX - base model only. (MRMA)
  • 2002 Acura MDX (BGHA)
  • 2002–2004 Honda Odyssey (BYBA)
  • 2005–2006 Honda Odyssey (BGRA)
  • 2003–2004 Honda Accord (MAYA)
  • 2003–2004 Honda Accord (MCLA)
  • 2003–2004 Acura MDX (MDKA)
  • 2006–2008 Honda Ridgeline (BJFA)*
  • 2009–2014 Honda Ridgeline (PSFA)*
  • 2003–2004 Honda Pilot (BVGA)
  • 2005–2015 Honda Pilot (BVLA)*
  • 2003–2005 Honda Accord (BAYA)
  • 2003–2005 Honda Accord (BCLA)
  • 2006–2012 Acura RDX (BWEA)
  • 2004–2007 Saturn Vue (MDRA front wheel drive, MDPA all wheel drive)


*The H5 transmission was redesigned with a stronger case and four shafts versus three in the earlier H5 transmissions. The four shaft H5 transmissions are much more robust and do not exhibit the same failure rate as the three shaft H5. The new design first entered service in the 2005 Acura RL. All heavier vehicles eventually moved to this design in the following years until it was ultimately replaced by the H6, which also uses four shafts.

  • 2006 Honda Ridgeline
  • 2006 Honda Pilot
  • 2007 Honda Odyssey
  • 2007 Acura MDX
  • 2009 Acura TL

See also[edit]

B7xa Transmission Diagram

Retrieved from 'https://en.wikipedia.org/w/index.php?title=Honda_H5_transmission&oldid=916289839'