US4094201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection pump for internal combustion engines
Assignee: Robert Bosch GmbH
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Filing: 1976-05-12
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Granted: 1978-06-13
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Expires: 1996-05-12
Abstract
Abstract The invention relates to a fuel injection pump for internal combustion engines provided with a reciprocating and simultaneously rotating pump piston which serves as a fuel distributor and an associated cam drive mechanism arranged to actuate the pump piston, the cam drive including a cam disk which runs on rollers and in turn is coupled both with the drive shaft of the pump and the pump piston.
Inventors
- 👤 Franz Eheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:11
CPC Classifications
F; F02; F02M; F02M41/00; F02M41/08; F02M41/10; F02M41/12; F02M41/121; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
In a fuel injection pump for an internal combustion engine, including: a rotatable drive shaft; a reciprocating and simultaneously rotating pump plunger; and a cam drive mechanism engageable with the pump plunger, said cam drive mechanism including: a two part cam disk; and roller means engageable with the cam disk for imparting to the cam disk, and pump plunger, a displacement in the reciprocating direction of the pump plunger, said two part cam disk, comprising: a support member manufactured of an elastic material which exhibits a high degree of core toughness, said support member having coupling means for coupling to the drive shaft, thereby producing rotation of the cam drive mechanism and the pump plunger; and a cam ring bonded to the support member, and manufactured of a casehardened wear-resistant material.
Claim 2
Dependent Claim
131 words
In a fuel injection pump for an internal combustion engine, including: a rotatable drive shaft; a reciprocating and simultaneously rotating pump plunger; and a cam drive mechanism engageable with the pump plunger, said cam drive mechanism including: a two part cam disk; and roller means engageable with the cam disk for imparting to the cam disk, and pump plunger, a displacement in the reciprocating direction of the pump plunger, said two part cam disk, comprising: a support member manufactured of an elastic material which exhibits a high degree of core toughness, said support member having coupling means for coupling to the drive shaft, thereby producing rotation of the cam drive mechanism and the pump plunger; and a cam ring bonded to the support member, and manufactured of a casehardened wear-resistant material.
Claim 3
Dependent Claim
29 words
A fuel injection pump for an internal combustion engine as claimed in claim 1, in which the support member comprises an extruded casehardened material consisting of 16Mn Cr 5.
Claim 4
Dependent Claim
32 words
A fuel injection pump for an internal combustion engine as claimed in claim 1, in which the cam ring includes a radially extending flange portion that extends beyond the support member therefor.
Claim 5
Dependent Claim
36 words
A fuel injection pump for an internal combustion engine as claimed in claim 1, in which the bonding is conducted in a groove provided between the complemental surfaces of the support member and said cam ring.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |