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camshaft lobes

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Image
Published: 09 June 2014
Fig. 25 True contour hardening of camshaft lobes. Courtesy of Inductoheat Inc. More
Image
Published: 31 October 2011
Fig. 13 Cross section of camshaft lobe. Material is pearlitic gray cast iron. Courtesy of Sciaky, Inc. More
Image
Published: 01 November 2010
Fig. 30 Electromagnetic control of undesirable temper back of previously hardened camshaft lobes More
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005865
EISBN: 978-1-62708-167-2
... Abstract Induction heat treatment is a common method for hardening and tempering of crankshafts, which are necessary components in almost every internal combustion engine for cars, trucks, and machinery, as well as pumps, compressors, and other devices. Similar to crankshafts, camshafts also...
Image
Published: 09 June 2014
Fig. 21 Based on camshaft functionality, the working surface of a lobe consists of four regions: the base circle (also known as the heel), the ramp, the flank, and the nose. More
Image
Published: 09 June 2014
Fig. 24 Two camshafts having different lengths that were induction hardened using the same single-shot inductor that hardens multiple lobes More
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005611
EISBN: 978-1-62708-174-0
... results in improved material characteristics and reduced wear of the camshaft surfaces compared to other heat treatment processes. Fig. 12 Camshaft hardening. Material is 51CrV. Courtesy of PTR-Precision Technologies, Inc. A cross section of a camshaft lobe made of pearlitic gray cast iron...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003484
EISBN: 978-1-62708-195-5
... to maintain continuous contact between the valve lifter (follower) and the camshaft lobe at higher rpm, so that a higher spring mass is required. This higher spring force increases frictional forces on the cam, the tensile stress at the neck, and the contact forces with the cylinder head. Finally, the energy...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001770
EISBN: 978-1-62708-178-8
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006427
EISBN: 978-1-62708-192-4
.... Methods of friction and wear control depend on the component. For example, metal rubbing is dominant in the valvetrain system, whereas hydrodynamic lubrication is the norm in the crankshaft and camshaft bearings. Due to the higher metal-to-metal contacts in the valvetrain system, wear is more sensitive...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005868
EISBN: 978-1-62708-167-2
... that adequate hardened depth is achieved in the fillets on either side of the journal. Care must also be taken to avoid overheating the area surrounding the oil holes. On camshafts, all lobes are typically hardened, and the process must be designed so that there is no overheating or excessive tempering...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005533
EISBN: 978-1-62708-197-9
... , 18 , 19 , 20 , 21 ). Figure 2 shows a small portion of the virtually endless variety of steel and cast iron components that can be induction hardened. This includes, but is not limited to, various transmission and engine components (e.g., axles, constant velocity joints, camshafts, crankshafts...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006022
EISBN: 978-1-62708-175-7
... the joint between them. The assembly, used in a Chrysler V-6 engine, is mounted to the engine camshaft. Formed to a density of 6.8 g/cm 3 , the rotor has an ultimate tensile strength of 415 MPa (60 ksi), yield strength of 380 MPa (55 ksi), and a 160 MPa (23 ksi) fatigue limit. The adapter is formed...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001303
EISBN: 978-1-62708-170-2
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005842
EISBN: 978-1-62708-167-2
... flux concentrators on coil life. It also reviews the importance of having appropriate and reliable electrical contacts. camshafts clamshell inductors copper crack propagation crankshafts current density electrical contacts failure mode frequency induction coils induction hardening...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002151
EISBN: 978-1-62708-188-7
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005807
EISBN: 978-1-62708-165-8
.... Fig. 1 Spot (stationary) and progressive methods of flame hardening. (a) Spot (stationary) method of flame hardening a rocker arm and the internal lobes of a cam; quench not shown. (b) Progressive hardening method Basically, the spot method requires no elaborate equipment, except perhaps...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003200
EISBN: 978-1-62708-199-3
... (stationary) method of flame hardening a rocker arm and the internal lobes of a cam; quench not shown. (b) Progressive hardening method Basically, the spot method requires no elaborate equipment, except, perhaps, fixtures and timing devices to ensure the uniform processing of each piece. However...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006413
EISBN: 978-1-62708-192-4
... in camshaft lobes by duplicating light city driving conditions, with wear requirements similar to those for Sequence IVA. The Sequence IVA 1994 engine is replaced with an engine that better represents cars currently on the road. Sequence IIIH—Viscosity and Piston Deposits General Motors Co. (GM...