ZF 3HP transmission

Template:Short description Template:Infobox automobile

The 3HP is a 3-speed Automatic transmission family with a hydrodynamic Torque converter with hydraulic control for passenger cars from ZF Friedrichshafen AG. In selector level position "P", the output is locked mechanically. The Ravigneaux planetary gearset types were first introduced in 1963 and produced through the mid seventies. The Simpson planetary gearset types were launched in 1973 and produced through 1990. Both were used in different versions in a large number of cars.

Gear RatiosTemplate:Efn
Template:Diagonal split header	R	1	2	3	Total Span	Span Center	Avg. Step	Compo- nents

3HP 12 Small Engines	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	2 Gearsets 3 Brakes 2 Clutches
3HP 12 Big Engines	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	2 Gearsets 3 Brakes 2 Clutches

3HP 22 Big Engines	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	2 Gearsets 3 Brakes 2 Clutches
3HP 22 Small Engines	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
3HP 22 Porsche 944	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round

Template:Notelist

1963: 3HP 12 · Ravigneaux Planetary Gearset Types

Introduction

The 3HP 12 was produced through the mid-seventies and has been used in a variety of cars. There are versions for longitudinal and transverse engines.

Gear Ratios
With Assessment		Planetary Gearset: TeethTemplate:Efn Ravigneaux		Count	TotalTemplate:Efn CenterTemplate:Efn	Avg.Template:Efn

Model Type	Version First Delivery	S₁Template:Efn R₁Template:Efn	S₂Template:Efn R₂Template:Efn	Brakes Clutches	Ratio Span	Gear StepTemplate:Efn
Gear Ratio		R $i_{R}$		1 $i_{1}$	2 $i_{2}$	3 $i_{3}$
StepTemplate:Efn		$- \frac{i_{R}}{i_{1}}$ Template:Efn		$\frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{2}}$ Template:Efn	$\frac{i_{2}}{i_{3}}$
Δ StepTemplate:Efn Template:Efn					$\frac{i_{1}}{i_{2}} : \frac{i_{2}}{i_{3}}$
Shaft Speed		$\frac{i_{1}}{i_{R}}$		$\frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{2}}$	$\frac{i_{1}}{i_{3}}$
Δ Shaft SpeedTemplate:Efn		$0 - \frac{i_{1}}{i_{R}}$		$\frac{i_{1}}{i_{1}} - 0$	$\frac{i_{1}}{i_{2}} - \frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{3}} - \frac{i_{1}}{i_{2}}$

3HP 12	Template:Convert 1963	25 32	32 64	3 2	Template:Round Template:Round	Template:Round Template:Efn
Gear Ratio		Template:Font color		Template:Round $\frac{64}{25}$	Template:Font color	Template:Round $\frac{1}{1}$
Step		Template:Font color Template:Efn		1.0000	Template:Font color Template:Efn	1.5200
Δ StepTemplate:Efn					1.1080
Speed		Template:Font color		1.0000	1.6842	2.5600
Δ Speed		Template:Font color		1.0000	0.6842	0.8758

3HP 12	Big Engines 1963	28 32	32 64	3 2	Template:Round Template:Round	Template:Round Template:Efn
Gear Ratio		Template:Font color		Template:Round $\frac{16}{7}$	Template:Round $\frac{10}{7}$	Template:Round $\frac{1}{1}$
Step		Template:Font color Template:Efn		1.0000	1.6000	1.4286
Δ StepTemplate:Efn					1.1280
Speed		Template:Font color		1.0000	1.6000	2.2857
Δ Speed		Template:Font color		1.0000	0.6000	0.6842

Ratio		$- \frac{R_{2}}{S_{2}}$		$\frac{R_{1} R_{2}}{S_{1} S_{2}}$	$\frac{R_{2} (S_{1} + R_{1})}{S_{1} (S_{2} + R_{2})}$	$\frac{1}{1}$
Algebra And Actuated Shift Elements
Brake ATemplate:Efn					❶
Brake BTemplate:Efn					❶
Brake CTemplate:Efn		❶		❶
Clutch DTemplate:Efn				❶	❶	❶
Clutch ETemplate:Efn		❶				❶

Template:Notelist

1973: 3HP 22 · Simpson Planetary Gearset Types

Introduction

The all new 3HP 22 was introduced in 1973 and was produced through 1990 and has been used in a variety of cars from Alfa Romeo, BMW,^[1] Citroën, Peugeot, and Fiat.^[2]

Specifications
Weight	Template:Convert with converter
Control	mechanical · hydraulic

Gear Ratios
With Assessment		Planetary Gearset: TeethTemplate:Efn Simpson		Count	TotalTemplate:Efn CenterTemplate:Efn	Avg.Template:Efn

Model Type	Version First Delivery	S₁Template:Efn R₁Template:Efn	S₂Template:Efn R₂Template:Efn	Brakes Clutches	Ratio Span	Gear StepTemplate:Efn
Gear Ratio		R $i_{R}$		1 $i_{1}$	2 $i_{2}$	3 $i_{3}$
StepTemplate:Efn		$- \frac{i_{R}}{i_{1}}$ Template:Efn		$\frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{2}}$ Template:Efn	$\frac{i_{2}}{i_{3}}$
Δ StepTemplate:Efn Template:Efn					$\frac{i_{1}}{i_{2}} : \frac{i_{2}}{i_{3}}$
Shaft Speed		$\frac{i_{1}}{i_{R}}$		$\frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{2}}$	$\frac{i_{1}}{i_{3}}$
Δ Shaft SpeedTemplate:Efn		$0 - \frac{i_{1}}{i_{R}}$		$\frac{i_{1}}{i_{1}} - 0$	$\frac{i_{1}}{i_{2}} - \frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{3}} - \frac{i_{1}}{i_{2}}$

3HP 22	Template:Convert 1963	35 73	35 73	3 2	Template:Round Template:Round	Template:Round Template:Efn
Gear Ratio		Template:Font color		Template:Round $\frac{181}{73}$	Template:Font color	Template:Round $\frac{1}{1}$
Step		Template:Font color Template:Efn		1.0000	Template:Font color Template:Efn	1.4795
Δ StepTemplate:Efn					1.1328
Speed		Template:Font color		1.0000	1.6759	2.4795
Δ Speed		Template:Font color		1.0000	0.6759	0.8035

3HP 22	Small Engines 1973	35 73	41 73	3 2	Template:Round Template:Round	Template:Round Template:Efn
Gear Ratio		Template:Font color		Template:Round $\frac{6983}{2555}$	Template:Font color	Template:Round $\frac{1}{1}$
Step		Template:Font color Template:Efn		1.0000	Template:Font color Template:Efn	1.5616
Δ StepTemplate:Efn					1.1207
Speed		Template:Font color		1.0000	1.7501	2.7331
Δ Speed		Template:Font color		1.0000	0.7501	0.9829

3HP 22	Porsche 944 1981	28 68	32 64	3 2	Template:Round Template:Round	Template:Round Template:Efn
Gear Ratio		Template:Font color		Template:Round $\frac{19}{7}$	Template:Font color	Template:Round $\frac{1}{1}$
Step		Template:Font color Template:Efn		1.0000	Template:Font color Template:Efn	1.5000
Δ StepTemplate:Efn					1.2063
Speed		Template:Font color		1.0000	1.8095	2.7143
Δ Speed		Template:Font color		1.0000	0.8095	0.9048

Ratio		$- \frac{R_{1}}{S_{1}}$	$\frac{S_{1} (S_{2} + R_{2}) + R_{1} S_{2}}{S_{1} R_{2}}$		$\frac{S_{2} + R_{2}}{R_{2}}$	$\frac{1}{1}$
Algebra And Actuated Shift Elements
Brake ATemplate:Efn					❶
Brake BTemplate:Efn					❶	❶
Brake CTemplate:Efn		❶		❶
Clutch DTemplate:Efn				❶	❶	❶
Clutch ETemplate:Efn		❶				❶

Template:Notelist

References

Template:Reflist

[1] Template:Cite web

[2] Template:Cite web

[1]

[2]

ZF 3HP transmission

Contents

1963: 3HP 12 · Ravigneaux Planetary Gearset Types

Introduction

1973: 3HP 22 · Simpson Planetary Gearset Types

Introduction

See also

References

Navigation menu

ZF 3HP transmission

1963: 3HP 12 · Ravigneaux Planetary Gearset Types

Introduction

1973: 3HP 22 · Simpson Planetary Gearset Types

Introduction

See also

References

Navigation menu

Search